XTERM(1)XTERM(1)NAMExterm - terminal emulator for X
SYNOPSISxterm [-toolkitoption ...] [-option ...] [shell]
DESCRIPTION
The xterm program is a terminal emulator for the X Window System. It
provides DEC VT102/VT220 (VTxxx) and Tektronix 4014 compatible
terminals for programs that cannot use the window system directly. If
the underlying operating system supports terminal resizing capabilities
(for example, the SIGWINCH signal in systems derived from 4.3bsd),
xterm will use the facilities to notify programs running in the window
whenever it is resized.
The VTxxx and Tektronix 4014 terminals each have their own window so
that you can edit text in one and look at graphics in the other at the
same time. To maintain the correct aspect ratio (height/width),
Tektronix graphics will be restricted to the largest box with a 4014's
aspect ratio that will fit in the window. This box is located in the
upper left area of the window.
Although both windows may be displayed at the same time, one of them is
considered the ``active'' window for receiving keyboard input and
terminal output. This is the window that contains the text cursor.
The active window can be chosen through escape sequences, the ``VT
Options'' menu in the VTxxx window, and the ``Tek Options'' menu in the
4014 window.
EMULATIONS
The VT102 emulation is fairly complete, but does not support
autorepeat. Double-size characters are displayed properly if your font
server supports scalable fonts. The VT220 emulation does not support
soft fonts, it is otherwise complete. Termcap(5) entries that work
with xterm include an optional platform-specific entry, ``xterm,''
``vt102,'' ``vt100,'' ``ansi'' and ``dumb.'' xterm automatically
searches the termcap file in this order for these entries and then sets
the ``TERM'' and the ``TERMCAP'' environment variables. You may also
use ``vt220,'' but must set the terminal emulation level with the
decTerminalID resource. (The ``TERMCAP'' environment variable is not
set if xterm is linked against a terminfo library, since the requisite
information is not provided by the termcap emulation of terminfo
libraries).
Many of the special xterm features may be modified under program
control through a set of escape sequences different from the standard
VT102 escape sequences. (See the Xterm Control Sequences document.)
The Tektronix 4014 emulation is also fairly good. It supports 12-bit
graphics addressing, scaled to the window size. Four different font
sizes and five different lines types are supported. There is no
write-through or defocused mode support. The Tektronix text and
graphics commands are recorded internally by xterm and may be written
to a file by sending the COPY escape sequence (or through the Tektronix
menu; see below). The name of the file will be
``COPYyyyy-MM-dd.hh:mm:ss'', where yyyy, MM, dd, hh, mm and ss are the
year, month, day, hour, minute and second when the COPY was performed
(the file is created in the directory xterm is started in, or the home
directory for a login xterm).
Not all of the features described in this manual are necessarily
available in this version of xterm. Some (e.g., the non-VT220
extensions) are available only if they were compiled in, though the
most commonly-used are in the default configuration.
OTHER FEATURES
Xterm automatically highlights the text cursor when the pointer enters
the window (selected) and unhighlights it when the pointer leaves the
window (unselected). If the window is the focus window, then the text
cursor is highlighted no matter where the pointer is.
In VT102 mode, there are escape sequences to activate and deactivate an
alternate screen buffer, which is the same size as the display area of
the window. When activated, the current screen is saved and replaced
with the alternate screen. Saving of lines scrolled off the top of the
window is disabled until the normal screen is restored. The termcap(5)
entry for xterm allows the visual editor vi(1) to switch to the
alternate screen for editing and to restore the screen on exit. A
popup menu entry makes it simple to switch between the normal and
alternate screens for cut and paste.
In either VT102 or Tektronix mode, there are escape sequences to change
the name of the windows. Additionally, in VT102 mode, xterm implements
the window-manipulation control sequences from dtterm, such as resizing
the window, setting its location on the screen.
Xterm allows character-based applications to receive mouse events
(currently button-press and release events, and button-motion events)
as keyboard control sequences. See Xterm Control Sequences for
details.
OPTIONS
The xterm terminal emulator accepts the standard X Toolkit command line
options as well as many application-specific options. If the option
begins with a `+' instead of a `-', the option is restored to its
default value. The -version and -help options are interpreted even if
xterm cannot open the display, and are useful for testing and
configuration scripts:
-version
This causes xterm to print a version number to the standard
output.
-help This causes xterm to print out a verbose message describing its
options, one per line. The message is written to the standard
output. Xterm generates this message, sorting it and noting
whether a "-option" or a "+option" turns the feature on or off,
since some features historically have been one or the other.
Xterm generates a concise help message (multiple options per
line) when an unknown option is used, e.g.,
xterm-z
If the logic for a particular option such as logging is not
compiled into xterm, the help text for that option also is not
displayed by the -help option.
One parameter (after all options) may be given. That overrides xterm's
built-in choice of shell program. Normally xterm checks the SHELL
variable. If that is not set, xterm tries to use the shell program
specified in the password file. If that is not set, xterm uses
/bin/sh. If the parameter names an executable file, xterm uses that
instead. The parameter must be an absolute path, or name a file found
on the user's PATH (and thereby construct an absolute path). The -e
option cannot be used with this parameter since it uses all parameters
following the option.
The other options are used to control the appearance and behavior. Not
all options are necessarily configured into your copy of xterm:
-132 Normally, the VT102 DECCOLM escape sequence that switches
between 80 and 132 column mode is ignored. This option causes
the DECCOLM escape sequence to be recognized, and the xterm
window will resize appropriately.
-ah This option indicates that xterm should always highlight the
text cursor. By default, xterm will display a hollow text
cursor whenever the focus is lost or the pointer leaves the
window.
+ah This option indicates that xterm should do text cursor
highlighting based on focus.
-ai This option disables active icon support if that feature was
compiled into xterm. This is equivalent to setting the vt100
resource activeIcon to ``false''.
+ai This option enables active icon support if that feature was
compiled into xterm. This is equivalent to setting the vt100
resource activeIcon to ``true''.
-aw This option indicates that auto-wraparound should be allowed.
This allows the cursor to automatically wrap to the beginning
of the next line when it is at the rightmost position of a line
and text is output.
+aw This option indicates that auto-wraparound should not be
allowed.
-b number
This option specifies the size of the inner border (the
distance between the outer edge of the characters and the
window border) in pixels. That is the vt100 internalBorder
resource. The default is 2.
+bc turn off text cursor blinking. This overrides the cursorBlink
resource.
-bc turn on text cursor blinking. This overrides the cursorBlink
resource.
-bcf milliseconds
set the amount of time text cursor is off when blinking via the
cursorOffTime resource.
-bcn milliseconds
set the amount of time text cursor is on when blinking via the
cursorOffTime resource.
-bdc Set the vt100 resource colorBDMode to ``false'', disabling the
display of characters with bold attribute as color
+bdc Set the vt100 resource colorBDMode to ``true'', enabling the
display of characters with bold attribute as color rather than
bold
-cb Set the vt100 resource cutToBeginningOfLine to ``false''.
+cb Set the vt100 resource cutToBeginningOfLine to ``true''.
-cc characterclassrange:value[,...]
This sets classes indicated by the given ranges for using in
selecting by words. See the section specifying character
classes. and discussion of the charClass resource.
-cjk_width
Set the cjkWidth resource to ``true''. When turned on,
characters with East Asian Ambiguous (A) category in UTR 11
have a column width of 2. Otherwise, they have a column width
of 1. This may be useful for some legacy CJK text
terminal-based programs assuming box drawings and others to
have a column width of 2. It also should be turned on when you
specify a TrueType CJK double-width (bi-width/monospace) font
either with -fa at the command line or faceName resource. The
default is ``false''
+cjk_width
Reset the cjkWidth resource.
-class string
This option allows you to override xterm's resource class.
Normally it is ``XTerm'', but can be set to another class such
as ``UXTerm'' to override selected resources.
-cm This option disables recognition of ANSI color-change escape
sequences. It sets the colorMode resource to ``false''.
+cm This option enables recognition of ANSI color-change escape
sequences. This is the same as the vt100 resource colorMode.
-cn This option indicates that newlines should not be cut in
line-mode selections. It sets the cutNewline resource to
``false''.
+cn This option indicates that newlines should be cut in line-mode
selections. It sets the cutNewline resource to ``true''.
-cr color
This option specifies the color to use for text cursor. The
default is to use the same foreground color that is used for
text. It sets the cursorColor resource according to the
parameter.
-cu This option indicates that xterm should work around a bug in
the more(1) program that causes it to incorrectly display lines
that are exactly the width of the window and are followed by a
line beginning with a tab (the leading tabs are not displayed).
This option is so named because it was originally thought to be
a bug in the curses(3x) cursor motion package.
+cu This option indicates that xterm should not work around the
more(1) bug mentioned above.
-dc This option disables the escape sequence to change dynamic
colors: the vt100 foreground and background colors, its text
cursor color, the pointer cursor foreground and background
colors, the Tektronix emulator foreground and background
colors, its text cursor color and highlight color. The option
sets the dynamicColors option to ``false''.
+dc This option enables the escape sequence to change dynamic
colors. The option sets the dynamicColors option to ``true''.
-e program [ arguments ... ]
This option specifies the program (and its command line
arguments) to be run in the xterm window. It also sets the
window title and icon name to be the basename of the program
being executed if neither -T nor -n are given on the command
line. This must be the last option on the command line.
-en encoding
This option determines the encoding on which xterm runs. It
sets the locale resource. Encodings other than UTF-8 are
supported by using luit. The -lc option should be used instead
of -en for systems with locale support.
-fb font
This option specifies a font to be used when displaying bold
text. It sets the boldFont resource.
This font must be the same height and width as the normal font,
otherwise it is ignored. If only one of the normal or bold
fonts is specified, it will be used as the normal font and the
bold font will be produced by overstriking this font.
See also the discussion of boldMode and alwaysBoldMode
resources.
-fa pattern
This option sets the pattern for fonts selected from the
FreeType library if support for that library was compiled into
xterm. This corresponds to the faceName resource. When a CJK
double-width font is specified, you also need to turn on the
cjkWidth resource.
See also the renderFont resource, which combines with this to
determine whether FreeType fonts are initially active.
-fbb This option indicates that xterm should compare normal and bold
fonts bounding boxes to ensure they are compatible. It sets
the freeBoldBox resource to ``false''.
+fbb This option indicates that xterm should not compare normal and
bold fonts bounding boxes to ensure they are compatible. It
sets the freeBoldBox resource to ``true''.
-fbx This option indicates that xterm should not assume that the
normal and bold fonts have VT100 line-drawing characters. If
any are missing, xterm will draw the characters directly. It
sets the forceBoxChars resource to ``false''.
+fbx This option indicates that xterm should assume that the normal
and bold fonts have VT100 line-drawing characters. It sets the
forceBoxChars resource to ``true''.
-fd pattern
This option sets the pattern for double-width fonts selected
from the FreeType library if support for that library was
compiled into xterm. This corresponds to the
faceNameDoublesize resource.
-fi font
This option sets the font for active icons if that feature was
compiled into xterm.
See also the discussion of the iconFont resource.
-fs size
This option sets the pointsize for fonts selected from the
FreeType library if support for that library was compiled into
xterm. This corresponds to the faceSize resource.
-fw font
This option specifies the font to be used for displaying wide
text. By default, it will attempt to use a font twice as wide
as the font that will be used to draw normal text. If no
double-width font is found, it will improvise, by stretching
the normal font. This corresponds to the wideFont resource.
-fwb font
This option specifies the font to be used for displaying bold
wide text. By default, it will attempt to use a font twice as
wide as the font that will be used to draw bold text. If no
double-width font is found, it will improvise, by stretching
the bold font. This corresponds to the wideBoldFont resource.
-fx font
This option specifies the font to be used for displaying the
preedit string in the "OverTheSpot" input method.
See also the discussion of the ximFont resource.
-hc color
(see -selbg).
-hf This option indicates that HP Function Key escape codes should
be generated for function keys. It sets the hpFunctionKeys
resource to ``true''.
+hf This option indicates that HP Function Key escape codes should
not be generated for function keys. It sets the hpFunctionKeys
resource to ``false''.
-hm Tells xterm to use highlightTextColor and highlightColor to
override the reversed foreground/background colors in a
selection. It sets the highlightColorMode resource to
``true''.
+hm Tells xterm not to use highlightTextColor and highlightColor to
override the reversed foreground/background colors in a
selection. It sets the highlightColorMode resource to
``false''.
-hold Turn on the hold resource, i.e., xterm will not immediately
destroy its window when the shell command completes. It will
wait until you use the window manager to destroy/kill the
window, or if you use the menu entries that send a signal,
e.g., HUP or KILL.
+hold Turn off the hold resource, i.e., xterm will immediately
destroy its window when the shell command completes.
-ie Turn on the ptyInitialErase resource, i.e., use the
pseudo-terminal's sense of the stty erase value.
+ie Turn off the ptyInitialErase resource, i.e., set the stty erase
value using the kb string from the termcap entry as a
reference, if available.
-im Turn on the useInsertMode resource, which forces use of insert
mode by adding appropriate entries to the TERMCAP environment
variable.
+im Turn off the useInsertMode resource.
-into windowId
Given an X window identifier (a decimal integer), xterm will
reparent its top-level shell widget to that window. This is
used to embed xterm within other applications.
-j This option indicates that xterm should do jump scrolling. It
corresponds to the jumpScroll resource. Normally, text is
scrolled one line at a time; this option allows xterm to move
multiple lines at a time so that it does not fall as far
behind. Its use is strongly recommended since it makes xterm
much faster when scanning through large amounts of text. The
VT100 escape sequences for enabling and disabling smooth scroll
as well as the ``VT Options'' menu can be used to turn this
feature on or off.
+j This option indicates that xterm should not do jump scrolling.
-k8 This option sets the allowC1Printable resource. When
allowC1Printable is set, xterm overrides the mapping of C1
control characters (code 128-159) to treat them as printable.
+k8 This option resets the allowC1Printable resource.
-kt keyboardtype
This option sets the keyboardType resource. Possible values
include: ``unknown'', ``default'', ``hp'', ``sco'', ``sun'',
``tcap'' and ``vt220''.
The value ``unknown'', causes the corresponding resource to be
ignored.
The value ``default'', suppresses the associated resources
hpFunctionKeys, scoFunctionKeys, sunFunctionKeys,
tcapFunctionKeys and sunKeyboard, using the Sun/PC keyboard
layout.
-l Turn logging on. Normally logging is not supported, due to
security concerns. Some versions of xterm may have logging
enabled. The logfile is written to the directory from which
xterm is invoked. The filename is generated, of the form
XtermLog.XXXXXX
or
Xterm.log.hostname.yyyy.mm.dd.hh.mm.ss.XXXXXX
depending on how xterm was built.
+l Turn logging off.
-lc Turn on support of various encodings according to the users'
locale setting, i.e., LC_ALL, LC_CTYPE, or LANG environment
variables. This is achieved by turning on UTF-8 mode and by
invoking luit for conversion between locale encodings and
UTF-8. (luit is not invoked in UTF-8 locales.) This
corresponds to the locale resource.
The actual list of encodings which are supported is determined
by luit. Consult the luit manual page for further details.
See also the discussion of the -u8 option which supports UTF-8
locales.
+lc Turn off support of automatic selection of locale encodings.
Conventional 8bit mode or, in UTF-8 locales or with -u8 option,
UTF-8 mode will be used.
-lcc path
File name for the encoding converter from/to locale encodings
and UTF-8 which is used with -lc option or locale resource.
This corresponds to the localeFilter resource.
-leftbar
Force scrollbar to the left side of VT100 screen. This is the
default, unless you have set the rightScrollBar resource.
-lf filename
Specify the log-filename. See the -l option.
-ls This option indicates that the shell that is started in the
xterm window will be a login shell (i.e., the first character
of argv[0] will be a dash, indicating to the shell that it
should read the user's .login or .profile).
The -ls flag and the loginShell resource are ignored if -e is
also given, because xterm does not know how to make the shell
start the given command after whatever it does when it is a
login shell - the user's shell of choice need not be a Bourne
shell after all. Also, xterm-e is supposed to provide a
consistent functionality for other applications that need to
start text-mode programs in a window, and if loginShell were
not ignored, the result of ~/.profile might interfere with
that.
If you do want the effect of -ls and -e simultaneously, you may
get away with something like
xterm-e /bin/bash -l -c "my command here"
Finally, -ls is not completely ignored, because xterm-ls -e
does write a /etc/wtmp entry (if configured to do so), whereas
xterm-e does not.
-maximized
This option indicates that xterm should ask the window manager
to maximize its layout on startup. This corresponds to the
maximized resource.
Maximizing is not the reverse of iconifying; it is possible to
do both with certain window managers.
+maximized
This option indicates that xterm should ask the window manager
to maximize its layout on startup.
+ls This option indicates that the shell that is started should not
be a login shell (i.e., it will be a normal ``subshell'').
-mb This option indicates that xterm should ring a margin bell when
the user types near the right end of a line.
+mb This option indicates that margin bell should not be rung.
-mc milliseconds
This option specifies the maximum time between multi-click
selections.
-mesg Turn off the messages resource, i.e., disallow write access to
the terminal.
+mesg Turn on the messages resource, i.e., allow write access to the
terminal.
-mk_width
Set the mkWidth resource to ``true''. This makes xterm use a
built-in version of the wide-character width calculation. The
default is ``false''
+mk_width
Reset the mkWidth resource.
-ms color
This option specifies the color to be used for the pointer
cursor. The default is to use the foreground color. This sets
the pointerColor resource.
-nb number
This option specifies the number of characters from the right
end of a line at which the margin bell, if enabled, will ring.
The default is 10.
-nul This option disables the display of underlining.
+nul This option enables the display of underlining.
-pc This option enables the PC-style use of bold colors (see
boldColors resource).
+pc This option disables the PC-style use of bold colors.
-pob This option indicates that the window should be raised whenever
a Control-G is received.
+pob This option indicates that the window should not be raised
whenever a Control-G is received.
-rightbar
Force scrollbar to the right side of VT100 screen.
-rvc This option disables the display of characters with reverse
attribute as color.
+rvc This option enables the display of characters with reverse
attribute as color.
-rw This option indicates that reverse-wraparound should be
allowed. This allows the cursor to back up from the leftmost
column of one line to the rightmost column of the previous
line. This is very useful for editing long shell command lines
and is encouraged. This option can be turned on and off from
the ``VT Options'' menu.
+rw This option indicates that reverse-wraparound should not be
allowed.
-s This option indicates that xterm may scroll asynchronously,
meaning that the screen does not have to be kept completely up
to date while scrolling. This allows xterm to run faster when
network latencies are very high and is typically useful when
running across a very large internet or many gateways.
+s This option indicates that xterm should scroll synchronously.
-samename
Does not send title and icon name change requests when the
request would have no effect: the name is not changed. This
has the advantage of preventing flicker and the disadvantage of
requiring an extra round trip to the server to find out the
previous value. In practice this should never be a problem.
+samename
Always send title and icon name change requests.
-sb This option indicates that some number of lines that are
scrolled off the top of the window should be saved and that a
scrollbar should be displayed so that those lines can be
viewed. This option may be turned on and off from the ``VT
Options'' menu.
+sb This option indicates that a scrollbar should not be displayed.
-selbg color
This option specifies the color to use for the background of
selected text. If not specified, reverse video is used. See
the discussion of the highlightColor resource.
-selfg color
This option specifies the color to use for selected text. If
not specified, reverse video is used. See the discussion of
the highlightTextColor resource.
-sf This option indicates that Sun Function Key escape codes should
be generated for function keys.
+sf This option indicates that the standard escape codes should be
generated for function keys.
-si This option indicates that output to a window should not
automatically reposition the screen to the bottom of the
scrolling region. This option can be turned on and off from
the ``VT Options'' menu.
+si This option indicates that output to a window should cause it
to scroll to the bottom.
-sk This option indicates that pressing a key while using the
scrollbar to review previous lines of text should cause the
window to be repositioned automatically in the normal position
at the bottom of the scroll region.
+sk This option indicates that pressing a key while using the
scrollbar should not cause the window to be repositioned.
-sl number
This option specifies the number of lines to save that have
been scrolled off the top of the screen. This corresponds to
the saveLines resource. The default is 64.
-sm This option, corresponding to the sessionMgt resource,
indicates that xterm should set up session manager callbacks.
+sm This option indicates that xterm should not set up session
manager callbacks.
-sp This option indicates that Sun/PC keyboard should be assumed,
providing mapping for keypad ``+' to ``,', and CTRL-F1 to F13,
CTRL-F2 to F14, etc.
+sp This option indicates that the standard escape codes should be
generated for keypad and function keys.
-t This option indicates that xterm should start in Tektronix
mode, rather than in VT102 mode. Switching between the two
windows is done using the ``Options'' menus. Termcap(5)
entries that work with xterm ``tek4014,'' ``tek4015,''
``tek4012,'' ``tek4013,'' ``tek4010,'' and ``dumb.'' xterm
automatically searches the termcap file in this order for these
entries and then sets the ``TERM'' and the ``TERMCAP''
environment variables.
+t This option indicates that xterm should start in VT102 mode.
-tb This option, corresponding to the toolBar resource, indicates
that xterm should display a toolbar (or menubar) at the top of
its window. The buttons in the toolbar correspond to the popup
menus, e.g., control/left/mouse for "Main Options".
+tb This option indicates that xterm should not set up a toolbar.
-ti term_id
Specify the name used by xterm to select the correct response
to terminal ID queries. It also specifies the emulation level,
used to determine the type of response to a DA control
sequence. Valid values include vt52, vt100, vt101, vt102, and
vt220 (the "vt" is optional). The default is vt100. The
term_id argument specifies the terminal ID to use. (This is
the same as the decTerminalID resource).
-tm string
This option specifies a series of terminal setting keywords
followed by the characters that should be bound to those
functions, similar to the stty program. The keywords and their
values are described in detail in the ttyModes resource.
-tn name
This option specifies the name of the terminal type to be set
in the TERM environment variable. It corresponds to the
termName resource. This terminal type must exist in the
terminal database (termcap or terminfo, depending on how xterm
is built) and should have li# and co# entries. If the terminal
type is not found, xterm uses the built-in list ``xterm'',
``vt102'', etc.
-u8 This option sets the utf8 resource. When utf8 is set, xterm
interprets incoming data as UTF-8. This sets the wideChars
resource as a side-effect, but the UTF-8 mode set by this
option prevents it from being turned off. If you must turn it
on and off, use the wideChars resource.
This option and the utf8 resource are overridden by the -lc and
-en options and locale resource. That is, if xterm has been
compiled to support luit, and the locale resource is not
``false'' this option is ignored. We recommend using the -lc
option or the ``locale: true'' resource in UTF-8 locales when
your operating system supports locale, or -en UTF-8 option or
the ``locale: UTF-8'' resource when your operating system does
not support locale.
+u8 This option resets the utf8 resource.
-uc This option makes the cursor underlined instead of a box.
+uc This option makes the cursor a box instead of underlined.
-ulc This option disables the display of characters with underline
attribute as color rather than with underlining.
+ulc This option enables the display of characters with underline
attribute as color rather than with underlining.
-ulit This option, corresponding to the italicULMode resource,
disables the display of characters with underline attribute as
italics rather than with underlining.
+ulit This option, corresponding to the italicULMode resource,
enables the display of characters with underline attribute as
italics rather than with underlining.
-ut This option indicates that xterm should not write a record into
the the system utmp log file.
+ut This option indicates that xterm should write a record into the
system utmp log file.
-vb This option indicates that a visual bell is preferred over an
audible one. Instead of ringing the terminal bell whenever a
Control-G is received, the window will be flashed.
+vb This option indicates that a visual bell should not be used.
-wc This option sets the wideChars resource. When wideChars is
set, xterm maintains internal structures for 16-bit characters.
If you do not set this resource to ``true'', xterm will ignore
the escape sequence which turns UTF-8 mode on and off. The
default is ``false''.
+wc This option resets the wideChars resource.
-wf This option indicates that xterm should wait for the window to
be mapped the first time before starting the subprocess so that
the initial terminal size settings and environment variables
are correct. It is the application's responsibility to catch
subsequent terminal size changes.
+wf This option indicates that xterm should not wait before
starting the subprocess.
-ziconbeep percent
Same as zIconBeep resource. If percent is non-zero, xterms
that produce output while iconified will cause an XBell sound
at the given volume and have "***" prepended to their icon
titles. Most window managers will detect this change
immediately, showing you which window has the output. (A
similar feature was in x10 xterm.)
-C This option indicates that this window should receive console
output. This is not supported on all systems. To obtain
console output, you must be the owner of the console device,
and you must have read and write permission for it. If you are
running X under xdm on the console screen you may need to have
the session startup and reset programs explicitly change the
ownership of the console device in order to get this option to
work.
-Sccn This option allows xterm to be used as an input and output
channel for an existing program and is sometimes used in
specialized applications. The option value specifies the last
few letters of the name of a pseudo-terminal to use in slave
mode, plus the number of the inherited file descriptor. If the
option contains a ``/'' character, that delimits the characters
used for the pseudo-terminal name from the file descriptor.
Otherwise, exactly two characters are used from the option for
the pseudo-terminal name, the remainder is the file descriptor.
Examples (the first two are equivalent since the descriptor
follows the last ``/''):
-S/dev/pts/123/45
-S123/45
-Sab34
Note that xterm does not close any file descriptor which it did
not open for its own use. It is possible (though probably not
portable) to have an application which passes an open file
descriptor down to xterm past the initialization or the -S
option to a process running in the xterm.
The following command line arguments are provided for compatibility
with older versions. They may not be supported in the next release as
the X Toolkit provides standard options that accomplish the same task.
%geom This option specifies the preferred size and position of the
Tektronix window. It is shorthand for specifying the
``*tekGeometry'' resource.
#geom This option specifies the preferred position of the icon
window. It is shorthand for specifying the ``*iconGeometry''
resource.
-T string
This option specifies the title for xterm's windows. It is
equivalent to -title.
-n string
This option specifies the icon name for xterm's windows. It is
shorthand for specifying the ``*iconName'' resource. Note that
this is not the same as the toolkit option -name (see below).
The default icon name is the application name.
-r This option indicates that reverse video should be simulated by
swapping the foreground and background colors. It is
equivalent to -rv.
-w number
This option specifies the width in pixels of the border
surrounding the window. It is equivalent to -borderwidth or
-bw.
The following standard X Toolkit command line arguments are commonly
used with xterm:
-bd color
This option specifies the color to use for the border of the
window. The corresponding resource name is borderColor. xterm
uses the X Toolkit default, which is ``XtDefaultForeground''.
-bg color
This option specifies the color to use for the background of
the window. The corresponding resource name is background.
The default is ``XtDefaultBackground.''
-bw number
This option specifies the width in pixels of the border
surrounding the window.
This appears to be a legacy of older X releases. It sets the
borderWidth resource of the shell widget, and may provide
advice to your window manager to set the thickness of the
window frame. Most window managers do not use this
information. See the -b option, which controls the inner
border of the xterm window.
-display display
This option specifies the X server to contact; see X(7).
-fg color
This option specifies the color to use for displaying text.
The corresponding resource name is foreground. The default is
``XtDefaultForeground.''
-fn font
This option specifies the font to be used for displaying normal
text. The corresponding resource name is font. The resource
value default is fixed.
-font font
This is the same as -fn.
-geometry geometry
This option specifies the preferred size and position of the
VT102 window; see X(7).
-iconic This option indicates that xterm should ask the window manager
to start it as an icon rather than as the normal window. The
corresponding resource name is iconic.
-name name
This option specifies the application name under which
resources are to be obtained, rather than the default
executable file name. Name should not contain ``.'' or ``*''
characters.
-rv This option indicates that reverse video should be simulated by
swapping the foreground and background colors. The
corresponding resource name is reverseVideo.
+rv Disable the simulation of reverse video by swapping foreground
and background colors.
-title string
This option specifies the window title string, which may be
displayed by window managers if the user so chooses. The
default title is the command line specified after the -e
option, if any, otherwise the application name.
-xrm resourcestring
This option specifies a resource string to be used. This is
especially useful for setting resources that do not have
separate command line options.
RESOURCES
The program understands all of the core X Toolkit resource names and
classes. Application specific resources (e.g., "XTerm.NAME") follow:
backarrowKeyIsErase (class BackarrowKeyIsErase)
Tie the VTxxx backarrowKey and ptyInitialErase resources
together by setting the DECBKM state according to whether the
initial value of stty erase is a backspace (8) or delete (127)
character. The default is ``false'', which disables this
feature.
hold (class Hold)
If true, xterm will not immediately destroy its window when the
shell command completes. It will wait until you use the window
manager to destroy/kill the window, or if you use the menu
entries that send a signal, e.g., HUP or KILL. You may scroll
back, select text, etc., to perform most graphical operations.
Resizing the display will lose data, however, since this
involves interaction with the shell which is no longer running.
hpFunctionKeys (class HpFunctionKeys)
Specifies whether or not HP Function Key escape codes should be
generated for function keys instead of standard escape
sequences.
See also the keyboardType resource.
iconGeometry (class IconGeometry)
Specifies the preferred size and position of the application
when iconified. It is not necessarily obeyed by all window
managers.
iconName (class IconName)
Specifies the icon name. The default is the application name.
keyboardType (class KeyboardType)
Enables one (or none) of the various keyboard-type resources:
hpFunctionKeys, scoFunctionKeys, sunFunctionKeys,
tcapFunctionKeys and sunKeyboard. The resource's value should
be one of the corresponding strings ``hp'', ``sco'', ``sun'',
``tcap'' or ``vt220''. The individual resources are provided
for legacy support; this resource is simpler to use.
maxBufSize (class MaxBufSize)
Specify the maximum size of the input buffer. The default is
32768. You cannot set this to a value less than the minBufSize
resource. It will be increased as needed to make that value
evenly divide this one.
On some systems you may want to increase one or both of the
maxBufSize and minBufSize resource values to achieve better
performance if the operating system prefers larger buffer
sizes.
maximized (class Maximized)
Specifies whether or not xterm should ask the window manager to
maximize its layout on startup. The default is ``false.''
messages (class Messages)
Specifies whether write access to the terminal is allowed
initially. See mesg(1). The default is ``true''.
menuLocale (class MenuLocale)
Specify the locale used for character-set computations when
loading the popup menus. Use this to improve initialization
performance of the Athena popup menus, which may load
unnecessary (and very large) fonts, e.g., in a locale having
UTF-8 encoding. The default is the "C" (POSIX).
To use the current locale (only useful if you have localized
the resource settings for the menu entries), set the resource
to an empty string.
minBufSize (class MinBufSize)
Specify the minimum size of the input buffer, i.e., the amount
of data that xterm requests on each read. The default is 4096.
You cannot set this to a value less than 64.
ptyHandshake (class PtyHandshake)
If ``true'', xterm will perform handshaking during
initialization to ensure that the parent and child processes
update the utmp and stty state.
See also waitForMap which waits for the pseudo-terminal's
notion of the screen size, and ptySttySize which resets the
screen size after other terminal initialization is complete.
The default is ``true''.
ptyInitialErase (class PtyInitialErase)
If ``true'', xterm will use the pseudo-terminal's sense of the
stty erase value. If ``false'', xterm will set the stty erase
value to match its own configuration, using the kb string from
the termcap entry as a reference, if available. In either
case, the result is applied to the TERMCAP variable which xterm
sets.
See also the ttyModes resource, which may modify this. The
default is ``false''.
ptySttySize (class PtySttySize)
If ``true'', xterm will reset the screen size after terminal
initialization is complete. This is needed for some systems
whose pseudo-terminals cannot propagate terminal
characteristics. Where it is not needed, it can interfere with
other methods for setting the intial screen size, e.g., via
window manager interaction.
See also waitForMap which waits for a handshake-message giving
the pseudo-terminal's notion of the screen size. The default
is ``false'' on Linux and OS X systems, ``true'' otherwise.
sameName (class SameName)
If the value of this resource is ``true'', xterm does not send
title and icon name change requests when the request would have
no effect: the name is not changed. This has the advantage of
preventing flicker and the disadvantage of requiring an extra
round trip to the server to find out the previous value. In
practice this should never be a problem. The default is
``true''.
scoFunctionKeys (class ScoFunctionKeys)
Specifies whether or not SCP Function Key escape codes should
be generated for function keys instead of standard escape
sequences.
See also the keyboardType resource.
sessionMgt (class SessionMgt)
If the value of this resource is ``true'', xterm sets up
session manager callbacks for XtNdieCallback and
XtNsaveCallback. The default is ``true''.
sunFunctionKeys (class SunFunctionKeys)
Specifies whether or not Sun Function Key escape codes should
be generated for function keys instead of standard escape
sequences.
See also the keyboardType resource.
sunKeyboard (class SunKeyboard)
Specifies whether or not Sun/PC keyboard layout should be
assumed rather than DEC VT220. This causes the keypad ``+' to
be mapped to ``,'. and CTRL F1-F12 to F11-F20, depending on
the setting of the ctrlFKeys resource. so xterm emulates a DEC
VT220 more accurately. Otherwise (the default, with
sunKeyboard set to ``false''), xterm uses PC-style bindings for
the function keys and keypad.
PC-style bindings use the Shift, Alt, Control and Meta keys as
modifiers for function-keys and keypad (see the document Xterm
Control Sequences for details). The PC-style bindings are
analogous to PCTerm, but not the same thing. Normally these
bindings do not conflict with the use of the Meta key as
described for the eightBitInput resource. If they do, note
that the PC-style bindings are evaluated first.
See also the keyboardType resource.
tcapFunctionKeys (class TcapFunctionKeys)
Specifies whether or not function key escape codes read from
the termcap/terminfo entry should be generated for function
keys instead of standard escape sequences.
See also the keyboardType resource.
termName (class TermName)
Specifies the terminal type name to be set in the TERM
environment variable.
title (class Title)
Specifies a string that may be used by the window manager when
displaying this application.
toolBar (class ToolBar)
Specifies whether or not the toolbar should be displayed. The
default is ``true.''
ttyModes (class TtyModes)
Specifies a string containing terminal setting keywords and the
characters to which they may be bound. Allowable keywords
include: brk, dsusp, eof, eol, eol2, erase, erase2, flush,
intr, kill, lnext, quit, rprnt, start, status, stop, susp,
swtch and weras. Control characters may be specified as ^char
(e.g., ^c or ^u) and ^? may be used to indicate delete (127).
Use ^- to denote undef. Use \034 to represent ^\, since a
literal backslash in an X resource escapes the next character.
This is very useful for overriding the default terminal
settings without having to do an stty every time an xterm is
started. Note, however, that the stty program on a given host
may use different keywords; xterm's table is built-in.
If the ttyModes resource specifies a value for erase, that
overrides the ptyInitialErase resource setting, i.e., xterm
initializes the terminal to match that value.
useInsertMode (class UseInsertMode)
Force use of insert mode by adding appropriate entries to the
TERMCAP environment variable. This is useful if the system
termcap is broken. The default is ``false.''
utmpDisplayId (class UtmpDisplayId)
Specifies whether or not xterm should try to record the display
identifier (display number and screen number) as well as the
hostname in the system utmp log file. The default is ``true.''
utmpInhibit (class UtmpInhibit)
Specifies whether or not xterm should try to record the user's
terminal in the system utmp log file. If true, xterm will not
try. The default is ``false.''
waitForMap (class WaitForMap)
Specifies whether or not xterm should wait for the initial
window map before starting the subprocess. This is part of the
ptyHandshake logic. When xterm is directed to wait in this
fashion, it passes the terminal size from the display end of
the pseudo-terminal to the terminal I/O connection, e.g.,
according to the window manager. Otherwise, it uses the size
as given in resource values or command-line option -geom. The
default is ``false.''
zIconBeep (class ZIconBeep)
Same as -ziconbeep command line argument. If the value of this
resource is non-zero, xterms that produce output while
iconified will cause an XBell sound at the given volume and
have "***" prepended to their icon titles. Most window
managers will detect this change immediately, showing you which
window has the output. (A similar feature was in x10 xterm.)
The default is ``false.''
VT100 Widget Resources
The following resources are specified as part of the vt100 widget
(class VT100). They are specified by patterns such as
"XTerm.vt100.NAME".
If your xterm is configured to support the "toolbar", then those
patterns need an extra level for the form-widget which holds the
toolbar and vt100 widget. A wildcard between the top-level "XTerm" and
the "vt100" widget makes the resource settings work for either, e.g.,
"XTerm*vt100.NAME".
activeIcon (class ActiveIcon)
Specifies whether or not active icon windows are to be used
when the xterm window is iconified, if this feature is compiled
into xterm. The active icon is a miniature representation of
the content of the window and will update as the content
changes. Not all window managers necessarily support
application icon windows. Some window managers will allow you
to enter keystrokes into the active icon window. The default
is ``false.''
allowC1Printable (class AllowC1Printable)
If true, overrides the mapping of C1 controls (codes 128-159)
to make them be treated as if they were printable characters.
Although this corresponds to no particular standard, some users
insist it is a VT100. The default is ``false.''
allowColorOps (class AllowColorOps)
Specifies whether control sequences that set/query the dynamic
colors should be allowed. ANSI colors are unaffected by this
resource setting. The default is ``true.''
allowFontOps (class AllowFontOps)
Specifies whether control sequences that set/query the font
should be allowed. The default is ``true.''
allowScrollLock (class AllowScrollLock)
Specifies whether control sequences that set/query the Scroll
Lock key should be allowed, as well as whether the Scroll Lock
key responds to user's keypress. The default is ``false.''
When this feature is enabled, xterm will sense the state of the
Scroll Lock key each time it acquires focus. Pressing the
Scroll Lock key toggles xterm's internal state, as well as
toggling the associated LED. While the Scroll Lock is active,
xterm attempts to keep a viewport on the same set of lines. If
the current viewport is scrolled past the limit set by the
saveLines resource, then Scroll Lock has no further effect.
The reason for setting the default to ``false.'' is to avoid
user surprise. This key is generally unused in keyboard
configurations, and has not acquired a standard meaning even
when it is used in that manner. Consequently, users have
assigned it for ad hoc purposes.
allowSendEvents (class AllowSendEvents)
Specifies whether or not synthetic key and button events
(generated using the X protocol SendEvent request) should be
interpreted or discarded. The default is ``false'' meaning
they are discarded. Note that allowing such events would
create a very large security hole, therefore enabling this
resource forcefully disables the allowXXXOps resources. The
default is ``false.''
allowTcapOps (class AllowTcapOps)
Specifies whether control sequences that query the terminal's
notion of its function-key strings, as termcap or terminfo
capabilities should be allowed. The default is ``false.''
A few programs, e.g,. vim, use this feature to get an accurate
description of the terminal's capabilities, independent of the
termcap/terminfo setting:
- xterm can tell the querying program how many colors it
supports. This is a constant, depending on how it is
compiled, typically 16. It does not change if you alter
resource settings, e.g., the boldColors resource.
- xterm can tell the querying program what strings are sent by
modified (shift-, control-, alt-) function- and keypad-keys.
Reporting control- and alt-modifiers is a feature that
relies on the ncurses extended naming.
allowTitleOps (class AllowTitleOps)
Specifies whether control sequences that modify the window title
or icon name should be allowed. The default is ``true.''
allowWindowOps (class AllowWindowOps)
Specifies whether extended window control sequences (as used in
dtterm) should be allowed. These include several control
sequences which manipulate the window size or position, as well
as reporting these values and the title or icon name. Each of
these can be abused in a script; curiously enough most terminal
emulators that implement these restrict only a small part of the
repertoire. For fine-tuning, see disallowedWindowOps. The
default is ``false.''
altIsNotMeta (class AltIsNotMeta)
If ``true'', treat the Alt-key as if it were the Meta-key.
Your keyboard may happen to be configured so they are the same.
But if they are not, this allows you to use the same prefix-
and shifting operations with the Alt-key as with the Meta-key.
See altSendsEscape and metaSendsEscape. The default is
``false.''
altSendsEscape (class AltSendsEscape)
This is an additional keyboard operation that may be processed
after the logic for metaSendsEscape. It is only available if
the altIsNotMeta resource is set.
If ``true'', Alt characters (a character combined with the
modifier associated with left/right Alt-keys) are converted
into a two-character sequence with the character itself
preceded by ESC. This applies as well to function key control
sequences, unless xterm sees that Alt is used in your key
translations. If ``false'', Alt characters input from the
keyboard cause a shift to 8-bit characters (just like
metaSendsEscape). By combining the Alt- and Meta-modifiers,
you can create corresponding combinations of ESC-prefix and
8-bit characters. The default is ``false.''
alwaysBoldMode (class AlwaysBoldMode)
Specifies whether xterm should check if the normal and bold
fonts are distinct before deciding whether to use overstriking
to simulate bold fonts. If this resource is true, xterm does
not make the check for distinct fonts when deciding how to
handle the boldMode resource. The default is ``false.''
boldMode alwaysBoldMode Comparison Action
----------------------------------------------------
false false ignored use font
false true ignored use font
true false same overstrike
true false different use font
true true ignored overstrike
alwaysHighlight (class AlwaysHighlight)
Specifies whether or not xterm should always display a
highlighted text cursor. By default (if this resource is
false), a hollow text cursor is displayed whenever the pointer
moves out of the window or the window loses the input focus.
The default is ``false.''
alwaysUseMods (class AlwaysUseMods)
Override the numLock resource, telling xterm to use the Alt and
Meta modifiers to construct parameters for function key
sequences even if those modifiers appear in the translations
resource. Normally xterm checks if Alt or Meta is used in a
translation that would conflict with function key modifiers,
and will ignore these modifiers in that special case. The
default is ``false.''
answerbackString (class AnswerbackString)
Specifies the string that xterm sends in response to an ENQ
(control/E) character from the host. The default is a blank
string, i.e., ``''. A hardware VT100 implements this feature
as a setup option.
appcursorDefault (class AppcursorDefault)
If ``true,'' the cursor keys are initially in application mode.
This is the same as the VT102 private DECCKM mode, The default
is ``false.''
appkeypadDefault (class AppkeypadDefault)
If ``true,'' the keypad keys are initially in application mode.
The default is ``false.''
autoWrap (class AutoWrap)
Specifies whether or not auto-wraparound should be enabled.
This is the same as the VT102 DECAWM. The default is ``true.''
awaitInput (class AwaitInput)
Specifies whether or not the xterm uses a 50 millisecond
timeout to await input (i.e., to support the Xaw3d arrow
scrollbar). The default is ``false.''
backarrowKey (class BackarrowKey)
Specifies whether the backarrow key transmits a backspace (8)
or delete (127) character. This corresponds to the DECBKM
control sequence. The default (backspace) is ``true.''
Pressing the control key toggles this behavior.
background (class Background)
Specifies the color to use for the background of the window.
The default is ``XtDefaultBackground.''
bellIsUrgent (class BellIsUrgent)
Specifies whether to set the Urgency hint for the window
manager when making a bell sound. The default is ``false.''
bellOnReset (class BellOnReset)
Specifies whether to sound a bell when doing a hard reset. The
default is ``true.''
bellSuppressTime (class BellSuppressTime)
Number of milliseconds after a bell command is sent during
which additional bells will be suppressed. Default is 200. If
set non-zero, additional bells will also be suppressed until
the server reports that processing of the first bell has been
completed; this feature is most useful with the visible bell.
boldColors (class ColorMode)
Specifies whether to combine bold attribute with colors like
the IBM PC, i.e., map colors 0 through 7 to colors 8 through
15. These normally are the brighter versions of the first 8
colors, hence bold. The default is ``true.''
boldFont (class BoldFont)
Specifies the name of the bold font to use instead of
overstriking. There is no default for this resource.
This font must be the same height and width as the normal font,
otherwise it is ignored. If only one of the normal or bold
fonts is specified, it will be used as the normal font and the
bold font will be produced by overstriking this font.
See also the discussion of boldMode and alwaysBoldMode
resources.
boldMode (class BoldMode)
This specifies whether or not text with the bold attribute
should be overstruck to simulate bold fonts if the resolved
bold font is the same as the normal font. It may be desirable
to disable bold fonts when color is being used for the bold
attribute.
Note that xterm has one bold font which you may set explicitly.
Xterm attempts to derive a bold font for the other font
selections (font1 through font6). If it cannot find a bold
font, it will use the normal font. In each case (whether the
explicit resource or the derived font), if the normal and bold
fonts are distinct, this resource has no effect. The default
is ``true.''
See the alwaysBoldMode resource which can modify the behavior
of this resource.
Although xterm attempts to derive a bold font for other font
selections, the font server may not cooperate. Since X11R6,
bitmap fonts have been scaled. The font server claims to
provide the bold font that xterm requests, but the result is
not always readable. XFree86 provides a feature which can be
used to suppress the scaling. In the X server's configuration
file (e.g., "/etc/X11/XFree86"), you can add ":unscaled" to the
end of the directory specification for the "misc" fonts, which
comprise the fixed-pitch fonts that are used by xterm. For
example
FontPath "/usr/lib/X11/fonts/misc/"
would become
FontPath "/usr/lib/X11/fonts/misc/:unscaled"
Depending on your configuration, the font server may have its
own configuration file. The same ":unscaled" can be added to
its configuration file at the end of the directory specification
for "misc".
The bitmap scaling feature is also used by xterm to implement
VT102 double-width and double-height characters.
brokenLinuxOSC (class BrokenLinuxOSC)
If true, xterm applies a workaround to ignore malformed control
sequences that a Linux script might send. Compare the palette
control sequences documented in console_codes with ECMA-48.
The default is ``true.''
brokenSelections (class BrokenSelections)
If true, xterm in 8-bit mode will interpret STRING selections
as carrying text in the current locale's encoding. Normally
STRING selections carry ISO-8859-1 encoded text. Setting this
resource to ``true'' violates the ICCCM; it may, however, be
useful for interacting with some broken X clients. The default
is ``false.''
brokenStringTerm (class BrokenStringTerm)
provides a work-around for some ISDN routers which start an
application control string without completing it. Set this to
``true'' if xterm appears to freeze when connecting. The
default is ``false.''
Xterm's state parser recognizes several types of control
strings which can contain text, e.g.,
APC (Application Program Command),
DCS (Device Control String),
OSC (Operating System Command),
PM (Privacy Message), and
SOS (Start of String),
Each should end with a string-terminator (a special character
which cannot appear in these strings). Ordinary control
characters found within the string are not ignored; they are
processed without interfering with the process of accumulating
the control string's content. Xterm recognizes these controls
in all modes, although some of the functions may be suppressed
after parsing the control.
When enabled, this feature allows the user to exit from an
unterminated control string when any of these ordinary control
characters are found:
control/D (used as an end of file in many shells),
control/H (backspace),
control/I (tab-feed),
control/J (line feed aka newline),
control/K (vertical tab),
control/L (form feed),
control/M (carriage return),
control/N (shift-out),
control/O (shift-in),
control/Q (XOFF),
control/X (cancel)
c132 (class C132)
Specifies whether or not the VT102 DECCOLM escape sequence,
used to switch between 80 and 132 columns, should be honored.
The default is ``false.''
cacheDoublesize (class CacheDoublesize)
Tells whether to cache double-sized fonts by xterm. Set this
to zero to disable double-sized fonts altogether.
charClass (class CharClass)
Specifies comma-separated lists of character class bindings of
the form [low-]high:value. These are used in determining which
sets of characters should be treated the same when doing cut
and paste. See the CHARACTER CLASSES section.
cjkWidth (class CjkWidth)
Specifies whether xterm should follow the traditional East
Asian width convention. When turned on, characters with East
Asian Ambiguous (A) category in UTR 11 have a column width of
2. You may have to set this option to ``true'' if you have
some old East Asian terminal based programs that assume that
line-drawing characters have a column width of 2. If this
resource is false, the mkWidth resource controls the choice
between the system's wcwidth and xterm's built-in tables. The
default is ``false.''
color0 (class Color0)
color1 (class Color1)
color2 (class Color2)
color3 (class Color3)
color4 (class Color4)
color5 (class Color5)
color6 (class Color6)
color7 (class Color7)
These specify the colors for the ISO-6429 extension. The
defaults are, respectively, black, red3, green3, yellow3, a
customizable dark blue, magenta3, cyan3, and gray90. The
default shades of color are chosen to allow the colors 8-15 to
be used as brighter versions.
color8 (class Color8)
color9 (class Color9)
color10 (class Color10)
color11 (class Color11)
color12 (class Color12)
color13 (class Color13)
color14 (class Color14)
color15 (class Color15)
These specify the colors for the ISO-6429 extension if the bold
attribute is also enabled. The default resource values are
respectively, gray30, red, green, yellow, a customizable light
blue, magenta, cyan, and white.
color16 (class Color16)
through
color255 (class Color255)
These specify the colors for the 256-color extension. The
default resource values are for colors 16 through 231 to make a
6x6x6 color cube, and colors 232 through 255 to make a
grayscale ramp.
Resources past color15 are available as a compile-time option.
Due to a hardcoded limit in the X libraries on the total number
of resources (to 400), the resources for 256-colors are omitted
when wide-character support and luit are enabled. Besides
inconsistent behavior if only part of the resources were
allowed, determining the exact cutoff is difficult, and the X
libraries tend to crash if the number of resources exceeds the
limit. The color palette is still initialized to the same
default values, and can be modified via control sequences.
On the other hand, the resource limit does permit including the
entire range for 88-colors.
colorAttrMode (class ColorAttrMode)
Specifies whether colorBD, colorBL, colorRV, and colorUL should
override ANSI colors. If not, these are displayed only when no
ANSI colors have been set for the corresponding position. The
default is ``false.''
colorBD (class ColorBD)
This specifies the color to use to display bold characters if
the ``colorBDMode'' resource is enabled. The default is
``XtDefaultForeground.''
colorBDMode (class ColorAttrMode)
Specifies whether characters with the bold attribute should be
displayed in color or as bold characters. Note that setting
colorMode off disables all colors, including bold. The default
is ``false.''
colorBL (class ColorBL)
This specifies the color to use to display blink characters if
the ``colorBLMode'' resource is enabled. The default is
``XtDefaultForeground.''
colorBLMode (class ColorAttrMode)
Specifies whether characters with the blink attribute should be
displayed in color. Note that setting colorMode off disables
all colors, including this. The default is ``false.''
colorMode (class ColorMode)
Specifies whether or not recognition of ANSI (ISO-6429) color
change escape sequences should be enabled. The default is
``true.''
colorRV (class ColorRV)
This specifies the color to use to display reverse characters
if the ``colorRVMode'' resource is enabled. The default is
``XtDefaultForeground.''
colorRVMode (class ColorAttrMode)
Specifies whether characters with the reverse attribute should
be displayed in color. Note that setting colorMode off
disables all colors, including this. The default is ``false.''
colorUL (class ColorUL)
This specifies the color to use to display underlined
characters if the ``colorULMode'' resource is enabled. The
default is ``XtDefaultForeground.''
colorULMode (class ColorAttrMode)
Specifies whether characters with the underline attribute
should be displayed in color or as underlined characters. Note
that setting colorMode off disables all colors, including
underlining. The default is ``false.''
combiningChars (class CombiningChars)
Specifies the number of wide-characters which can be stored in
a cell to overstrike (combine) with the base character of the
cell. This can be set to values in the range 0 to 4. The
default is ``2''.
ctrlFKeys (class CtrlFKeys)
In VT220 keyboard mode (see sunKeyboard resource), specifies
the amount by which to shift F1-F12 given a control modifier
(CTRL). This allows you to generate key symbols for F10-F20 on
a Sun/PC keyboard. The default is ``10'', which means that
CTRL F1 generates the key symbol for F11.
curses (class Curses)
Specifies whether or not the last column bug in more(1) should
be worked around. See the -cu option for details. The default
is ``false.''
cursorBlink (class CursorBlink)
Specifies whether to make the cursor blink. The default is
``false.''
cursorColor (class CursorColor)
Specifies the color to use for the text cursor. The default is
``XtDefaultForeground.'' By default, xterm attempts to keep
this color from being the same as the background color, since
it draws the cursor by filling the background of a text cell.
The same restriction applies to control sequences which may
change this color.
Setting this resource overrides most of xterm's adjustments to
cursor color. It will still use reverse-video to disallow some
cases, such as a black cursor on a black background.
cursorOffTime (class CursorOffTime)
Specifies the duration of the "off" part of the cursor blink
cycle-time in milliseconds. The same timer is used for text
blinking. The default is 300.
cursorOnTime (class CursorOnTime)
Specifies the duration of the "on" part of the cursor blink
cycle-time, in milliseconds. The same timer is used for text
blinking. The default is 600.
cutNewline (class CutNewline)
If ``false'', triple clicking to select a line does not include
the Newline at the end of the line. If ``true'', the Newline
is selected. The default is ``true.''
cursorUnderLine (class CursorUnderLine)
Specifies whether to make the cursor underlined or a box. The
default is ``false.''
cutToBeginningOfLine (class CutToBeginningOfLine)
If ``false'', triple clicking to select a line selects only
from the current word forward. If ``true'', the entire line is
selected. The default is ``true.''
decTerminalID (class DecTerminalID)
Specifies the emulation level (100=VT100, 220=VT220, etc.),
used to determine the type of response to a DA control
sequence. Leading non-digit characters are ignored, e.g.,
"vt100" and "100" are the same. The default is 100.
defaultString (class DefaultString)
Specify the character (or string) which xterm will substitute
when pasted text includes a character which cannot be
represented in the current encoding. For instance, pasting
UTF-8 text into a display of ISO-8859-1 characters will only be
able to display codes 0-255, while UTF-8 text can include
Unicode values above 255. The default is ``#'' (a single pound
sign).
If the undisplayable text would be double-width, xterm will add
a space after the ``#'' character, to give roughly the same
layout on the screen as the original text.
deleteIsDEL (class DeleteIsDEL)
Specifies whether the Delete key on the editing keypad should
send DEL (127) or the VT220-style Remove escape sequence. The
default is ``false,'' for the latter.
disallowedColorOps (class DisallowedColorOps)
Specify which features will be disabled if allowColorOps is
false. This is a comma-separated list of names. The default
value is
SetColor,GetColor,GetAnsiColor
The names are listed below. xterm ignores capitalization, but
they are shown in mixed-case for clarity.
SetColor
Set a specific dynamic color.
GetColor
Report the current setting of a given dynamic color.
GetAnsiColor
Report the current setting of a given ANSI color (actually
any of the colors set via ANSI-style controls).
disallowedFontOps (class DisallowedFontOps)
Specify which features will be disabled if allowFontOps is
false. This is a comma-separated list of names. The default
value is
SetFont,GetFont
The names are listed below. xterm ignores capitalization, but
they are shown in mixed-case for clarity.
SetFont
Set the specified font.
GetFont
Report the specified font.
disallowedTcapOps (class DisallowedTcapOps)
Specify which features will be disabled if allowTcapOps is
false. This is a comma-separated list of names. The default
value is
SetTcap,GetTcap
The names are listed below. xterm ignores capitalization, but
they are shown in mixed-case for clarity.
SetTcap
(not implemented)
GetTcap
Report specified function- and other special keys.
disallowedWindowOps (class DisallowedWindowOps)
Specify which features will be disabled if allowWindowOps is
false. This is a comma-separated list of names, or (for the
controls adapted from dtterm the operation number). The
default value is
20,21,SetXprop,SetSelection
The names are listed below. xterm ignores capitalization, but
they are shown in mixed-case for clarity. Where a number can be
used as an alternative, it is given in parentheses after the
name.
GetIconTitle (20)
Report xterm window's icon label as a string.
GetScreenSizeChars (19)
Report the size of the screen in characters as numbers.
GetSelection
Report selection data as a base64 string.
GetWinPosition (13)
Report xterm window position as numbers.
GetWinSizeChars (18)
Report the size of the text area in characters as numbers.
GetWinSizePixels (14)
Report xterm window in pixels as numbers.
GetWinState (11)
Report xterm window state as a number.
GetWinTitle (21)
Report xterm window's title as a string.
LowerWin (6)
Lower the xterm window to the bottom of the stacking order.
MaximizeWin (9)
Maximize window (i.e., resize to screen size).
MinimizeWin (2)
Iconify window.
PopTitle (23)
Pop title from internal stack.
PushTitle (22)
Push title to internal stack.
RaiseWin (5)
Raise the xterm window to the front of the stacking order.
RefreshWin (7)
Refresh the xterm window.
RestoreWin (1)
De-iconify window.
SetSelection
Set selection data.
SetWinLines
Resize to a given number of lines, at least 24.
SetWinPosition (3)
Move window to given coordinates.
SetWinSizeChars (8)
Resize the text area to given size in characters.
SetWinSizePixels (4)
Resize the xterm window to given size in pixels.
SetXprop
Set X property on top-level window.
dynamicColors (class DynamicColors)
Specifies whether or not escape sequences to change colors
assigned to different attributes are recognized.
eightBitControl (class EightBitControl)
Specifies whether or not control sequences sent by the terminal
should be eight-bit characters or escape sequences. The
default is ``false.''
eightBitInput (class EightBitInput)
If ``true'', Meta characters (a single-byte character combined
with the Meta modifier key) input from the keyboard are
presented as a single character with the eighth bit turned on.
The terminal is put into 8-bit mode. If ``false'', Meta
characters are converted into a two-character sequence with the
character itself preceded by ESC. On startup, xterm tries to
put the terminal into 7-bit mode. The metaSendsEscape and
altSendsEscape resources may override this. The default is
``true.''
Generally keyboards do not have a key labeled "Meta", but "Alt"
keys are common, and they are conventionally used for "Meta".
If they were synonymous, it would have been reasonable to name
this resource "altSendsEscape", reversing its sense. For more
background on this, see the meta function in curses.
Note that the Alt key is not necessarily the same as the Meta
modifier. xmodmap lists your key modifiers. X defines
modifiers for shift, (caps) lock and control, as well as 5
additional modifiers which are generally used to configure key
modifiers. xterm inspects the same information to find the
modifier associated with either Meta key (left or right), and
uses that key as the Meta modifier. It also looks for the
NumLock key, to recognize the modifier which is associated with
that.
If your xmodmap configuration uses the same keycodes for Alt-
and Meta-keys, xterm will only see the Alt-key definitions,
since those are tested before Meta-keys. NumLock is tested
first. It is important to keep these keys distinct; otherwise
some of xterm's functionality is not available.
eightBitOutput (class EightBitOutput)
Specifies whether or not eight-bit characters sent from the
host should be accepted as is or stripped when printed. The
default is ``true,'' which means that they are accepted as is.
eightBitSelectTypes (class EightBitSelectTypes)
Override xterm's default selection target list (see
SELECT/PASTE) for selections in normal (ISO-8859-1) mode. The
default is an empty string, which does not override anything.
faceName (class FaceName)
Specify the pattern for fonts selected from the FreeType
library if support for that library was compiled into xterm.
There is no default value.
If not specified, or if there is no match for both normal and
bold fonts, xterm uses the font and related resources.
faceNameDoublesize (class FaceNameDoublesize)
Specify an double-width font for cases where an application
requires this, e.g., in CJK applications. There is no default
value.
If the application uses double-wide characters and this
resource is not given, xterm will use a scaled version of the
font given by faceName.
faceSize (class FaceSize)
Specify the pointsize for fonts selected from the FreeType
library if support for that library was compiled into xterm.
The default is ``14.'' On the VT Fonts menu, this corresponds
to the Default entry.
Although the default is ``14.'', this may not be the same as
the pointsize for the default bitmap font, i.e., that assigned
with the -fn option, or the font resource. For example, the
"fixed" font usually has a pointsize of ``8.''. If you set
faceSize to match the size of the bitmap font, then switching
between bitmap and TrueType fonts via the font menu will give
comparable sizes for the window.
You can specify the pointsize for TrueType fonts selected with
the other size-related menu entries such as Medium, Huge, etc.,
by using one of the following resource values. If you do not
specify a value, they default to ``0.0'', which causes xterm to
use the ratio of font sizes from the corresponding bitmap font
resources to obtain a TrueType pointsize.
If all of the faceSize resources are set, then xterm will use
this information to determine the next smaller/larger TrueType
font for the larger-vt-font() and smaller-vt-font() actions.
If any are not set, xterm will use only the areas of the bitmap
fonts.
faceSize1 (class FaceSize1)
Specifies the pointsize of the first alternative font.
faceSize2 (class FaceSize2)
Specifies the pointsize of the second alternative font.
faceSize3 (class FaceSize3)
Specifies the pointsize of the third alternative font.
faceSize4 (class FaceSize4)
Specifies the pointsize of the fourth alternative font.
faceSize5 (class FaceSize5)
Specifies the pointsize of the fifth alternative font.
faceSize6 (class FaceSize6)
Specifies the pointsize of the sixth alternative font.
font (class Font)
Specifies the name of the normal font. The default is
``fixed.''
See the discussion of the locale resource, which describes how
this font may be overridden.
NOTE: some resource files use patterns such as
*font: fixed
which are overly broad, affecting both
xterm.vt100.font
and
xterm.vt100.utf8fonts.font
which is probably not what you intended.
fastScroll (class FastScroll)
Modifies the effect of jump scroll (jumpScroll) by suppressing
screen refreshes for the special case when output to the screen
has completely shifted the contents off-screen. For instance,
cat'ing a large file to the screen does this.
font1 (class Font1)
Specifies the name of the first alternative font.
font2 (class Font2)
Specifies the name of the second alternative font.
font3 (class Font3)
Specifies the name of the third alternative font.
font4 (class Font4)
Specifies the name of the fourth alternative font.
font5 (class Font5)
Specifies the name of the fifth alternative font.
font6 (class Font6)
Specifies the name of the sixth alternative font.
fontDoublesize (class FontDoublesize)
Specifies whether xterm should attempt to use font scaling to
draw double-sized characters. Some older font servers cannot
do this properly, will return misleading font metrics. The
default is ``true''. If disabled, xterm will simulate
double-sized characters by drawing normal characters with
spaces between them.
fontWarnings (class FontWarnings)
Specify whether xterm should report an error if it fails to
load a font:
0 Never report an error (though the X libraries may).
1 Report an error if the font name was given as a resource
setting.
2 Always report an error on failure to load a font.
forceBoxChars (class ForceBoxChars)
Specifies whether xterm should assume the normal and bold fonts
have VT100 line-drawing characters:
- The fixed-pitch ISO-8859-*-encoded fonts used by xterm
normally have the VT100 line-drawing glyphs in cells 1-31.
Other fixed-pitch fonts may be more attractive, but lack
these glyphs.
- When using an ISO-10646-1 font and the wideChars resource
is true, xterm uses the Unicode glyphs which match the
VT100 line-drawing glyphs.
If ``false'', xterm checks for missing glyphs in the font and
makes line-drawing characters directly as needed. If ``true'',
xterm assumes the font does not contain the line-drawing
characters, and draws them directly. The default is ``false.''
forcePackedFont (class ForcePackedFont)
Specifies whether xterm should use the maximum or minimum glyph
width when displaying using a bitmap font. Use the maximum
width to help with proportional fonts. The default is
``true,'' denoting the minimum width.
foreground (class Foreground)
Specifies the color to use for displaying text in the window.
Setting the class name instead of the instance name is an easy
way to have everything that would normally appear in the text
color change color. The default is ``XtDefaultForeground.''
formatOtherKeys (class FormatOtherKeys)
Overrides the format of the escape sequence used to report
modified keys with the modifyOtherKeys resource.
0 send modified keys as parameters for function-key 27
(default).
1 send modified keys as parameters for CSI u.
freeBoldBox (class FreeBoldBox)
Specifies whether xterm should assume the bounding boxes for
normal and bold fonts are compatible. If ``false'', xterm
compares them and will reject choices of bold fonts that do not
match the size of the normal font. The default is ``false'',
which means that the comparison is performed.
geometry (class Geometry)
Specifies the preferred size and position of the VT102 window.
There is no default for this resource.
highlightColor (class HighlightColor)
Specifies the color to use for the background of selected
(highlighted) text. If not specified (i.e., matching the
default foreground), reverse video is used. The default is
``XtDefaultForeground.''
highlightColorMode (class HighlightColorMode)
Specifies whether xterm should use highlightTextColor and
highlightColor to override the reversed foreground/background
colors in a selection. The default is unspecified: at startup,
xterm checks if those resources are set to something other than
the default foreground and background colors. Setting this
resource disables the check.
The following table shows the interaction of the highlighting
resources, abbreviated as shown to fit in this page:
HCM
highlightColorMode
HR highlightReverse
HBG
highlightColor
HFG
highlightTextColor
HCM HR HBG HFG Highlight
------------------------------------------------------
false false default default bg/fg
false false default set bg/fg
false false set default fg/HBG
false false set set fg/HBG
======================================================
false true default default bg/fg
false true default set bg/fg
false true set default fg/HBG
false true set set fg/HBG
======================================================
true false default default bg/fg
true false default set HFG/fg
true false set default bg/HBG
true false set set HFG/HBG
======================================================
true true default default fg/fg (useless)
true true default set HFG/fg
true true set default fg/HBG
true true set set HFG/HBG
======================================================
default false default default bg/fg
default false default set bg/fg
default false set default fg/HBG
default false set set HFG/HBG
======================================================
default true default default bg/fg
default true default set bg/fg
default true set default fg/HBG
default true set set HFG/HBG
======================================================
highlightReverse (class HighlightReverse)
Specifies whether xterm should reverse the selection foreground
and background colors when selecting text with reverse-video
attribute. This applies only to the highlightColor and
highlightTextColor resources, e.g., to match the color scheme
of xwsh. If ``true'', xterm reverses the colors, If ``false'',
xterm does not reverse colors, The default is ``true.''
highlightSelection (class HighlightSelection)
If ``false'', selecting with the mouse highlights all positions
on the screen between the beginning of the selection and the
current position. If ``true'', xterm highlights only the
positions that contain text that can be selected. The default
is ``false.''
Depending on the way your applications write to the screen,
there may be trailing blanks on a line. Xterm stores data as
it is shown on the screen. Erasing the display changes the
internal state of each cell so it is not considered a blank for
the purpose of selection. Blanks written since the last erase
are selectable. If you do not wish to have trailing blanks in
a selection, use the trimSelection resource.
highlightTextColor (class HighlightTextColor)
Specifies the color to use for the foreground of selected
(highlighted) text. If not specified (i.e., matching the
default background), reverse video is used. The default is
``XtDefaultBackground.''
hpLowerleftBugCompat (class HpLowerleftBugCompat)
Specifies whether to work around a bug in HP's xdb, which
ignores termcap and always sends ESC F to move to the lower
left corner. ``true'' causes xterm to interpret ESC F as a
request to move to the lower left corner of the screen. The
default is ``false.''
i18nSelections (class I18nSelections)
If false, xterm will not request the targets COMPOUND_TEXT or
TEXT. The default is ``true.'' It may be set to false in order
to work around ICCCM violations by other X clients.
iconBorderColor (class BorderColor)
Specifies the border color for the active icon window if this
feature is compiled into xterm. Not all window managers will
make the icon border visible.
iconBorderWidth (class BorderWidth)
Specifies the border width for the active icon window if this
feature is compiled into xterm. The default is 2. Not all
window managers will make the border visible.
iconFont (class IconFont)
Specifies the font for the miniature active icon window, if
this feature is compiled into xterm. The default is "nil2".
initialFont (class InitialFont)
Specifies which of the VT100 fonts to use initially. Values
are the same as for the set-vt-font action. The default is
``d'', i.e., "default".
inputMethod (class XtCInputMethod)
Tells xterm which type of input method to use. There is no
default method.
internalBorder (class BorderWidth)
Specifies the number of pixels between the characters and the
window border. The default is 2.
italicULMode (class ColorAttrMode)
Specifies whether characters with the underline attribute
should be displayed in an italic font or as underlined
characters. It is implemented only for TrueType fonts.
jumpScroll (class JumpScroll)
Specifies whether or not jump scroll should be used. This
corresponds to the VT102 DECSCLM private mode. The default is
``true.'' See fastScroll for a variation.
keepSelection (class KeepSelection)
Specifies whether xterm will keep the selection even after the
selected area was touched by some output to the terminal. The
default is ``true''.
keyboardDialect (class KeyboardDialect)
Specifies the initial keyboard dialect, as well as the default
value when the terminal is reset. The value given is the same
as the final character in the control sequences which change
character sets. The default is ``B'', which corresponds to US
ASCII.
nameKeymap (class NameKeymap)
See the discussion of the keymap() action.
limitResize (class LimitResize)
Limits resizing of the screen via control sequence to a given
multiple of the display dimensions. The default is ``1''.
locale (class Locale)
Specifies how to use luit, an encoding converter between UTF-8
and locale encodings. The resource value (ignoring case) may
be:
true
xterm will use the encoding specified by the users'
LC_CTYPE locale (i.e., LC_ALL, LC_CTYPE, or LANG variables)
as far as possible. This is realized by always enabling
UTF-8 mode and invoking luit in non-UTF-8 locales.
medium
xterm will follow users' LC_CTYPE locale only for UTF-8,
east Asian, and Thai locales, where the encodings were not
supported by conventional 8bit mode with changing fonts.
For other locales, xterm will use conventional 8bit mode.
checkfont
If mini-luit is compiled-in, xterm will check if a Unicode
font has been specified. If so, it checks if the character
encoding for the current locale is POSIX, Latin-1 or
Latin-9, uses the appropriate mapping to support those with
the Unicode font. For other encodings, xterm assumes that
UTF-8 encoding is required.
false
xterm will use conventional 8bit mode or UTF-8 mode
according to utf8 resource or -u8 option.
Any other value, e.g., ``UTF-8'' or ``ISO8859-2'', is assumed to
be an encoding name; luit will be invoked to support the
encoding. The actual list of supported encodings depends on
luit. The default is ``medium''.
Regardless of your locale and encoding, you need an ISO-10646-1
font to display the result. Your configuration may not include
this font, or locale-support by xterm may not be needed. At
startup, xterm uses a mechanism equivalent to the
load-vt-fonts(utf8Fonts, Utf8Fonts) action to load font name
subresources of the VT100 widget. That is, resource patterns
such as "*vt100.utf8Fonts.font" will be loaded, and (if this
resource is enabled), override the normal fonts. If no
subresources are found, the normal fonts such as "*vt100.font",
etc., are used. The resource files distributed with xterm use
ISO-10646-1 fonts, but do not rely on them unless you are using
the locale mechanism.
localeFilter (class LocaleFilter)
Specifies the file name for the encoding converter from/to
locale encodings and UTF-8 which is used with the -lc option or
locale resource. The help message shown by ``xterm -help''
lists the default value, which depends on your system
configuration.
If the encoding converter requires command-line parameters, you
should put those within a shell script to execute the
converter, and set this resource to point to the shell script.
loginShell (class LoginShell)
Specifies whether or not the shell to be run in the window
should be started as a login shell. The default is ``false.''
marginBell (class MarginBell)
Specifies whether or not the bell should be rung when the user
types near the right margin. The default is ``false.''
metaSendsEscape (class MetaSendsEscape)
If ``true'', Meta characters (a character combined with the
Meta modifier key) are converted into a two-character sequence
with the character itself preceded by ESC. This applies as
well to function key control sequences, unless xterm sees that
Meta is used in your key translations. If ``false'', Meta
characters input from the keyboard are handled according to the
eightBitInput resource. The default is ``false.''
mkSamplePass (class MkSamplePass)
If mkSampleSize is nonzero, and mkWidth (and cjkWidth) are
false, on startup xterm compares its built-in tables to the
system's wide character width data to decide if it will use the
system's data. It tests the first mkSampleSize character
values, and allows up to mkSamplePass mismatches before the
test fails. The default (for the allowed number of mismatches)
is 256.
mkSampleSize (class MkSampleSize)
With mkSamplePass, this specifies a startup test used for
initializing wide character width calculations. The default
(number of characters to check) is 1024.
mkWidth (class MkWidth)
Specifies whether xterm should use a built-in version of the
wide character width calculation. See also the cjkWidth
resource which can override this. The default is ``false.''
Here is a summary of the resources which control the choice of
wide character width calculation:
cjkWidth mkWidth Action
---------------------------------------------------------------
false false use system tables subject to mkSamplePass
false true use built-in tables
true false use built-in CJK tables
true true use built-in CJK tables
modifyCursorKeys (class ModifyCursorKeys)
Tells how to handle the special case where Control-, Shift-,
Alt- or Meta-modifiers are used to add a parameter to the
escape sequence returned by a cursor-key. The default is
``2'':
Set it to -1 to disable it.
Set it to 0 to use the old/obsolete behavior.
Set it to 1 to prefix modified sequences with CSI.
Set it to 2 to force the modifier to be the second parameter if
it would otherwise be the first.
Set it to 3 to mark the sequence with a ``>'' to hint that it
is private.
modifyFunctionKeys (class ModifyFunctionKeys)
Tells how to handle the special case where Control-, Shift-,
Alt- or Meta-modifiers are used to add a parameter to the
escape sequence returned by a (numbered) function-key. The
default is ``2''. The resource values are similar to
modifyCursorKeys:
Set it to -1 to permit the user to use shift- and
control-modifiers to construct function-key strings using the
normal encoding scheme.
Set it to 0 to use the old/obsolete behavior.
Set it to 1 to prefix modified sequences with CSI.
Set it to 2 to force the modifier to be the second parameter if
it would otherwise be the first.
Set it to 3 to mark the sequence with a ``>'' to hint that it
is private.
If modifyFunctionKeys is zero, xterm uses Control- and
Shift-modifiers to allow the user to construct numbered
function-keys beyond the set provided by the keyboard:
Control
adds the value given by the ctrlFKeys resource.
Shift
adds twice the value given by the ctrlFKeys resource.
Control/Shift
adds three times the value given by the ctrlFKeys
resource.
As a special case, legacy (when oldFunctionKeys is true) or
vt220 (when sunKeyboard is true) keyboards interpret only the
Control-modifier when constructing numbered function-keys. This
is done to provide compatible keyboards for DEC VT220 and
related terminals that implement user-defined keys (UDK).
modifyOtherKeys (class ModifyOtherKeys)
Like modifyCursorKeys, tells xterm to construct an escape
sequence for other keys (such as "2") when modified by
Control-, Alt- or Meta-modifiers. This feature does not apply
to function keys and well-defined keys such as ESC or the
control keys. The default is ``0'':
0 disables this feature.
1 enables this feature for keys except for those with
well-known behavior, e.g., Tab, Backarrow and some special
control character cases, e.g., Control-Space to make a
NUL.
2 enables this feature for keys including the exceptions
listed.
multiClickTime (class MultiClickTime)
Specifies the maximum time in milliseconds between multi-click
select events. The default is 250 milliseconds.
multiScroll (class MultiScroll)
Specifies whether or not scrolling should be done
asynchronously. The default is ``false.''
nMarginBell (class Column)
Specifies the number of characters from the right margin at
which the margin bell should be rung, when enabled by the
marginBell resource. The default is 10.
numLock (class NumLock)
If ``true'', xterm checks if NumLock is used as a modifier (see
xmodmap(1)). If so, this modifier is used to simplify the
logic when implementing special NumLock for the sunKeyboard
resource. Also (when sunKeyboard is false), similar logic is
used to find the modifier associated with the left and right
Alt keys. The default is ``true.''
oldXtermFKeys (class OldXtermFKeys)
If ``true'', xterm will use old-style control sequences for
function keys F1 to F4, for compatibility with X Consortium
xterm. Otherwise, it uses the VT100-style codes for PF1 to
PF4. The default is ``false.''
on2Clicks (class On2Clicks)
on3Clicks (class On3Clicks)
on4Clicks (class On4Clicks)
on5Clicks (class On5Clicks)
Specify selection behavior in response to multiple mouse
clicks. A single mouse click is always interpreted as
described in the SELECTION section (see POINTER USAGE).
Multiple mouse clicks (using the button which activates the
select-start action) are interpreted according to the resource
values of on2Clicks, etc. The resource value can be one of
these:
word
Select a ``word'' as determined by the charClass resource.
See the CHARACTER CLASSES section.
line
Select a line (counting wrapping).
group
Select a group of adjacent lines (counting wrapping). The
selection stops on a blank line, and does not extend outside
the current page.
page
Select all visible lines, i.e., the page.
all
Select all lines, i.e., including the saved lines.
regex
Select a ``word'' as determined by the regular expression
which follows in the resource value.
none
No selection action is associated with this resource. xterm
interprets it as the end of the list. For example, you may
use it to disable triple (and higher) clicking by setting
on3Clicks to ``none''.
The default values for on2Clicks and on3Clicks are ``word'' and
``line'', respectively. There is no default value for on4Clicks
or on5Clicks, making those inactive. On startup, xterm
determines the maximum number of clicks by the onXClicks
resource values which are set.
openIm (class XtCOpenIm)
Tells xterm whether to open the input method at startup. The
default is ``true''.
pointerColor (class PointerColor)
Specifies the foreground color of the pointer. The default is
``XtDefaultForeground.''
pointerColorBackground (class PointerColorBackground)
Specifies the background color of the pointer. The default is
``XtDefaultBackground.''
pointerMode (class PointerMode)
Specifies when the pointer may be hidden as the user types. It
will be redisplayed if the user moves the mouse, or clicks one
of its buttons.
0 never. This is the default.
1 the application running in xterm has not activated mouse
mode.
2 always.
pointerShape (class Cursor)
Specifies the name of the shape of the pointer. The default is
``xterm.''
popOnBell (class PopOnBell)
Specifies whether the window would be raised when Control-G is
received. The default is ``false.''
If the window is iconified, this has no effect. However, the
zIconBeep resource provides you with the ability to see which
iconified windows have sounded a bell.
preeditType (class XtCPreeditType)
Tells xterm which types of preedit (preconversion) string to
display. The default is ``OverTheSpot,Root''.
printAttributes (class PrintAttributes)
Specifies whether to print graphic attributes along with the
text. A real DEC VTxxx terminal will print the underline,
highlighting codes but your printer may not handle these. A
``0'' disables the attributes. A ``1'' prints the normal set
of attributes (bold, underline, inverse and blink) as
VT100-style control sequences. A ``2'' prints ANSI color
attributes as well. The default is ``1.''
printerAutoClose (class PrinterAutoClose)
If ``true'', xterm will close the printer (a pipe) when the
application switches the printer offline with a Media Copy
command. The default is ``false.''
printerCommand (class PrinterCommand)
Specifies a shell command to which xterm will open a pipe when
the first MC (Media Copy) command is initiated. The default is
a blank string. If the resource value is given as a blank
string, the printer is disabled.
printerControlMode (class PrinterControlMode)
Specifies the printer control mode. A ``1'' selects autoprint
mode, which causes xterm to print a line from the screen when
you move the cursor off that line with a line feed, form feed
or vertical tab character, or an autowrap occurs. Autoprint
mode is overridden by printer controller mode (a ``2''), which
causes all of the output to be directed to the printer. The
default is ``0.''
printerExtent (class PrinterExtent)
Controls whether a print page function will print the entire
page (true), or only the the portion within the scrolling
margins (false). The default is ``false.''
printerFormFeed (class PrinterFormFeed)
Controls whether a form feed is sent to the printer at the end
of a print page function. The default is ``false.''
printerNewLine (class PrinterNewLine)
Controls whether a newline is sent to the printer at the end of
a print page function. The default is ``true.''
quietGrab (class QuietGrab)
Controls whether the cursor is repainted when NotifyGrab and
NotifyUngrab event types are received during change of focus.
The default is ``false.''
renderFont (class RenderFont)
If xterm is built with the Xft library, this controls whether
the faceName resource is used. The default is ``default.''
The resource values are strings, evaluated as booleans after
startup.
false
disable the feature and use the normal (bitmap) font.
true
startup using the TrueType font specified by the faceName
and faceSize resource settings. If there is no value for
faceName, disable the feature and use the normal (bitmap)
font.
After startup, you can still switch to/from the bitmap
font using the ``TrueType Fonts'' menu entry.
default
startup using the normal (bitmap) font, but enable the
``TrueType Fonts'' menu entry to allow runtime switching
to/from TrueType fonts.
If there is no faceName resource set, then runtime
switching to TrueType fonts is disabled. Xterm has a
separate compiled-in value for faceName for the special
case where renderFont is ``default''. That is normally
``mono''.
resizeGravity (class ResizeGravity)
Affects the behavior when the window is resized to be taller or
shorter. NorthWest specifies that the top line of text on the
screen stay fixed. If the window is made shorter, lines are
dropped from the bottom; if the window is made taller, blank
lines are added at the bottom. This is compatible with the
behavior in R4. SouthWest (the default) specifies that the
bottom line of text on the screen stay fixed. If the window is
made taller, additional saved lines will be scrolled down onto
the screen; if the window is made shorter, lines will be
scrolled off the top of the screen, and the top saved lines
will be dropped.
retryInputMethod (class XtCRetryInputMethod)
Tells xterm how many times to retry, in case the input-method
server is not responding. This is a different issue than
unsupported preedit type, etc. You may encounter retries if
your X configuration (and its libraries) are missing pieces.
Setting this resource to zero ``0'' will cancel the retrying.
The default is ``3''.
reverseVideo (class ReverseVideo)
Specifies whether or not reverse video should be simulated.
The default is ``false.''
reverseWrap (class ReverseWrap)
Specifies whether or not reverse-wraparound should be enabled.
This corresponds to xterm's private mode 45. The default is
``false.''
rightScrollBar (class RightScrollBar)
Specifies whether or not the scrollbar should be displayed on
the right rather than the left. The default is ``false.''
saveLines (class SaveLines)
Specifies the number of lines to save beyond the top of the
screen when a scrollbar is turned on. The default is 64.
scrollBar (class ScrollBar)
Specifies whether or not the scrollbar should be displayed.
The default is ``false.''
scrollBarBorder (class ScrollBarBorder)
Specifies the width of the scrollbar border. Note that this is
drawn to overlap the border of the xterm window. Modifying the
scrollbar's border affects only the line between the VT100
widget and the scrollbar. The default value is 1.
scrollKey (class ScrollCond)
Specifies whether or not pressing a key should automatically
cause the scrollbar to go to the bottom of the scrolling
region. This corresponds to xterm's private mode 1011. The
default is ``false.''
scrollLines (class ScrollLines)
Specifies the number of lines that the scroll-back and
scroll-forw actions should use as a default. The default value
is 1.
scrollTtyOutput (class ScrollCond)
Specifies whether or not output to the terminal should
automatically cause the scrollbar to go to the bottom of the
scrolling region. The default is ``true.''
selectToClipboard (class SelectToClipboard)
Tells xterm whether to use the PRIMARY or CLIPBOARD for SELECT
tokens in the selection mechanism. The set-select action can
change this at runtime, allowing the user to work with programs
that handle only one of these mechanisms. The default is
``false'', which tells it to use PRIMARY.
shiftFonts (class ShiftFonts)
Specifies whether to enable the actions larger-vt-font() and
smaller-vt-font(), which are normally bound to the shifted
KP_Add and KP_Subtract. The default is ``true.''
showBlinkAsBold (class ShowBlinkAsBold)
Tells xterm whether to display text with blink-attribute the
same as bold. If xterm has not been configured to support
blinking text, the default is ``true.'', which corresponds to
older versions of xterm, otherwise the default is ``false.''
showMissingGlyphs (class ShowMissingGlyphs)
Tells xterm whether to display a box outlining places where a
character has been used that the font does not represent. The
default is ``false.''
showWrapMarks (class ShowWrapMarks)
For debugging xterm and applications that may manipulate the
wrapped-line flag by writing text at the right margin, show a
mark on the right inner-border of the window. The mark shows
which lines have the flag set.
signalInhibit (class SignalInhibit)
Specifies whether or not the entries in the ``Main Options''
menu for sending signals to xterm should be disallowed. The
default is ``false.''
tekGeometry (class Geometry)
Specifies the preferred size and position of the Tektronix
window. There is no default for this resource.
tekInhibit (class TekInhibit)
Specifies whether or not the escape sequence to enter Tektronix
mode should be ignored. The default is ``false.''
tekSmall (class TekSmall)
Specifies whether or not the Tektronix mode window should start
in its smallest size if no explicit geometry is given. This is
useful when running xterm on displays with small screens. The
default is ``false.''
tekStartup (class TekStartup)
Specifies whether or not xterm should start up in Tektronix
mode. The default is ``false.''
tiXtraScroll (class TiXtraScroll)
Specifies whether xterm should scroll to a new page when
processing the ti termcap entry, i.e., the private modes 47,
1047 or 1049. This is only in effect if titeInhibit is
``true'', because the intent of this option is to provide a
picture of the full-screen application's display on the
scrollback without wiping out the text that would be shown
before the application was initialized. The default for this
resource is ``false.''
titeInhibit (class TiteInhibit)
Specifies whether or not xterm should remove ti and te termcap
entries (used to switch between alternate screens on startup of
many screen-oriented programs) from the TERMCAP string. If
set, xterm also ignores the escape sequence to switch to the
alternate screen. Xterm supports terminfo in a different way,
supporting composite control sequences (also known as private
modes) 1047, 1048 and 1049 which have the same effect as the
original 47 control sequence. The default for this resource is
``false.''
titleModes (class TitleModes)
Tells xterm whether to accept or return window- and icon-labels
in ISO-8859-1 (the default) or UTF-8. Either can be encoded in
hexadecimal. The default for this resource is ``0.''
Each bit (bit "0" is 1, bit "1" is 2, etc) corresponds to one
of the parameters set by the title modes control sequence:
0 Set window/icon labels using hexadecimal
1 Query window/icon labels using hexadecimal
2 Set window/icon labels using UTF-8 (overrides utf8Titles
resource).
3 Query window/icon labels using UTF-8
translations (class Translations)
Specifies the key and button bindings for menus, selections,
``programmed strings,'' etc. The translations resource, which
provides much of xterm's configurability, is a feature of the X
Toolkit Intrinsics library (Xt). See the ACTIONS section.
trimSelection (class TrimSelection)
If you set highlightSelection, you can see the text which is
selected, including any trailing spaces. Clearing the screen
(or a line) resets it to a state containing no spaces. Some
lines may contain trailing spaces when an application writes
them to the screen. However, you may not wish to paste lines
with trailing spaces. If this resource is true, xterm will
trim trailing spaces from text which is selected. It does not
affect spaces which result in a wrapped line, nor will it trim
the trailing newline from your selection. The default is
``false.''
underLine (class UnderLine)
This specifies whether or not text with the underline attribute
should be underlined. It may be desirable to disable
underlining when color is being used for the underline
attribute. The default is ``true.''
useClipping (class UseClipping)
Tell xterm whether to use clipping to keep from producing dots
outside the text drawing area. Originally used to work around
for overstriking effects, this is also needed to work with some
incorrectly-sized fonts. The default is ``true.''
utf8 (class Utf8)
This specifies whether xterm will run in UTF-8 mode. If you
set this resource, xterm also sets the wideChars resource as a
side-effect. The resource is an integer, expected to range
from 0 to 3:
0 UTF-8 mode is initially off. The command-line option +u8
sets the resource to this value. Escape sequences for
turning UTF-8 mode on/off are allowed.
1 UTF-8 mode is initially on. Escape sequences for turning
UTF-8 mode on/off are allowed.
2 The command-line option -u8 sets the resource to this value.
Escape sequences for turning UTF-8 mode on/off are ignored.
3 This is the default value of the resource. It is changed
during initialization depending on whether the locale
resource was set, to 0 or 2. See the locale resource for
additional discussion of non-UTF-8 locales.
If you want to set the value of utf8, it should be in this
range. Other nonzero values are treated the same as ``1'',
i.e., UTF-8 mode is initially on, and escape sequences for
turning UTF-8 mode on/off are allowed.
utf8Fonts (class Utf8Fonts)
See the discussion of the locale resource.
utf8Latin1 (class Utf8Latin1)
If true, allow an ISO-8859-1 normal font to be combined with an
ISO-10646 font if the latter is given via the -fw option or its
corresponding resource value. The default is ``false.''
utf8SelectTypes (class Utf8SelectTypes)
Override xterm's default selection target list (see
SELECT/PASTE) for selections in wide-character (UTF-8) mode.
The default is an empty string, which does not override
anything.
utf8Title (class Utf8Title)
Applications can set xterm's title by writing a control
sequence. Normally this control sequence follows the VT220
convention, which encodes the string in ISO-8859-1 and allows
for an 8-bit string terminator. If xterm is started in a UTF-8
locale, it translates the ISO-8859-1 string to UTF-8 to work
with the X libraries which assume the string is UTF-8.
However, some users may wish to write a title string encoded in
UTF-8. Set this resource to ``true'' to allow UTF-8 encoded
title strings. That cancels the translation to UTF-8, allowing
UTF-8 strings to be displayed as is.
This feature is available as a menu entry, since it is related
to the particular applications you are running within xterm.
You can also use a control sequence (see the discussion of
"Title Modes" in the control sequences document), to set an
equivalent flag. The titleModes resource sets the same value,
which overrides this resource.
The default is ``false.''
veryBoldColors (class VeryBoldColors)
Specifies whether to combine video attributes with colors
specified by colorBD, colorBL, colorRV and colorUL. The
resource value is the sum of values for each attribute:
1 for reverse,
2 for underline,
4 for bold and
8 for blink.
The default is ``0.''
visualBell (class VisualBell)
Specifies whether or not a visible bell (i.e., flashing) should
be used instead of an audible bell when Control-G is received.
The default is ``false.''
visualBellDelay (class VisualBellDelay)
Number of milliseconds to delay when displaying a visual bell.
Default is 100. If set to zero, no visual bell is displayed.
This is useful for very slow displays, e.g., an LCD display on
a laptop.
vt100Graphics (class VT100Graphics)
This specifies whether xterm will interpret VT100 graphic
character escape sequences while in UTF-8 mode. The default is
``true'', to provide support for various legacy applications.
wideBoldFont (class WideBoldFont)
This option specifies the font to be used for displaying bold
wide text. By default, it will attempt to use a font twice as
wide as the font that will be used to draw bold text. If no
double-width font is found, it will improvise, by stretching
the bold font.
wideChars (class WideChars)
Specifies if xterm should respond to control sequences that
process 16-bit characters. The default is ``false.''
wideFont (class WideFont)
This option specifies the font to be used for displaying wide
text. By default, it will attempt to use a font twice as wide
as the font that will be used to draw normal text. If no
double-width font is found, it will improvise, by stretching
the normal font.
ximFont (class XimFont)
This option specifies the font to be used for displaying the
preedit string in the "OverTheSpot" input method.
In "OverTheSpot" preedit type, the preedit (preconversion)
string is displayed at the position of the cursor. It is the
XIM server's responsibility to display the preedit string. The
XIM client must inform the XIM server of the cursor position.
For best results, the preedit string must be displayed with a
proper font. Therefore, xterm informs the XIM server of the
proper font. The font is be supplied by a "fontset", whose
default value is "*". This matches every font, the X library
automatically chooses fonts with proper charsets. The ximFont
resource is provided to override this default font setting.
Tek4014 Widget Resources
The following resources are specified as part of the tek4014 widget
(class Tek4014). These are specified by patterns such as
"XTerm.tek4014.NAME":
font2 (class Font)
Specifies font number 2 to use in the Tektronix window.
font3 (class Font)
Specifies font number 3 to use in the Tektronix window.
fontLarge (class Font)
Specifies the large font to use in the Tektronix window.
fontSmall (class Font)
Specifies the small font to use in the Tektronix window.
ginTerminator (class GinTerminator)
Specifies what character(s) should follow a GIN report or
status report. The possibilities are ``none,'' which sends no
terminating characters, ``CRonly,'' which sends CR, and
``CR&EOT,'' which sends both CR and EOT. The default is
``none.''
height (class Height)
Specifies the height of the Tektronix window in pixels.
initialFont (class InitialFont)
Specifies which of the four Tektronix fonts to use initially.
Values are the same as for the set-tek-text action. The
default is ``large.''
width (class Width)
Specifies the width of the Tektronix window in pixels.
Menu Resources
The resources that may be specified for the various menus are described
in the documentation for the Athena SimpleMenu widget. The name and
classes of the entries in each of the menus are listed below.
Resources named "lineN" where N is a number are separators with class
SmeLine.
The mainMenu has the following entries:
toolbar (class SmeBSB)
This entry invokes the set-toolbar(toggle) action.
securekbd (class SmeBSB)
This entry invokes the secure() action.
allowsends (class SmeBSB)
This entry invokes the allow-send-events(toggle) action.
redraw (class SmeBSB)
This entry invokes the redraw() action.
logging (class SmeBSB)
This entry invokes the logging(toggle) action.
print (class SmeBSB)
This entry invokes the print() action.
print-redir (class SmeBSB)
This entry invokes the print-redir() action.
8-bit-control (class SmeBSB)
This entry invokes the set-8-bit-control(toggle) action.
backarrow key (class SmeBSB)
This entry invokes the set-backarrow(toggle) action.
num-lock (class SmeBSB)
This entry invokes the set-num-lock(toggle) action.
alt-esc (class SmeBSB)
This entry invokes the alt-sends-escape(toggle) action.
meta-esc (class SmeBSB)
This entry invokes the meta-sends-escape(toggle) action.
delete-is-del (class SmeBSB)
This entry invokes the delete-is-del(toggle) action.
oldFunctionKeys (class SmeBSB)
This entry invokes the old-function-keys(toggle) action.
hpFunctionKeys (class SmeBSB)
This entry invokes the hp-function-keys(toggle) action.
scoFunctionKeys (class SmeBSB)
This entry invokes the sco-function-keys(toggle) action.
sunFunctionKeys (class SmeBSB)
This entry invokes the sun-function-keys(toggle) action.
sunKeyboard (class SmeBSB)
This entry invokes the sunKeyboard(toggle) action.
suspend (class SmeBSB)
This entry invokes the send-signal(tstp) action on systems that
support job control.
continue (class SmeBSB)
This entry invokes the send-signal(cont) action on systems that
support job control.
interrupt (class SmeBSB)
This entry invokes the send-signal(int) action.
hangup (class SmeBSB)
This entry invokes the send-signal(hup) action.
terminate (class SmeBSB)
This entry invokes the send-signal(term) action.
kill (class SmeBSB)
This entry invokes the send-signal(kill) action.
quit (class SmeBSB)
This entry invokes the quit() action.
The vtMenu has the following entries:
scrollbar (class SmeBSB)
This entry invokes the set-scrollbar(toggle) action.
jumpscroll (class SmeBSB)
This entry invokes the set-jumpscroll(toggle) action.
reversevideo (class SmeBSB)
This entry invokes the set-reverse-video(toggle) action.
autowrap (class SmeBSB)
This entry invokes the set-autowrap(toggle) action.
reversewrap (class SmeBSB)
This entry invokes the set-reversewrap(toggle) action.
autolinefeed (class SmeBSB)
This entry invokes the set-autolinefeed(toggle) action.
appcursor (class SmeBSB)
This entry invokes the set-appcursor(toggle) action.
appkeypad (class SmeBSB)
This entry invokes the set-appkeypad(toggle) action.
scrollkey (class SmeBSB)
This entry invokes the set-scroll-on-key(toggle) action.
scrollttyoutput (class SmeBSB)
This entry invokes the set-scroll-on-tty-output(toggle) action.
allow132 (class SmeBSB)
This entry invokes the set-allow132(toggle) action.
cursesemul (class SmeBSB)
This entry invokes the set-cursesemul(toggle) action.
visualbell (class SmeBSB)
This entry invokes the set-visualbell(toggle) action.
bellIsUrgent (class SmeBSB)
This entry invokes the set-bellIsUrgent(toggle) action.
poponbell (class SmeBSB)
This entry invokes the set-poponbell(toggle) action.
cursorblink (class SmeBSB)
This entry invokes the set-cursorblink(toggle) action.
titeInhibit (class SmeBSB)
This entry invokes the set-titeInhibit(toggle) action.
activeicon (class SmeBSB)
This entry toggles active icons on and off if this feature was
compiled into xterm. It is enabled only if xterm was started
with the command line option +ai or the activeIcon resource is
set to ``true.''
softreset (class SmeBSB)
This entry invokes the soft-reset() action.
hardreset (class SmeBSB)
This entry invokes the hard-reset() action.
clearsavedlines (class SmeBSB)
This entry invokes the clear-saved-lines() action.
tekshow (class SmeBSB)
This entry invokes the set-visibility(tek,toggle) action.
tekmode (class SmeBSB)
This entry invokes the set-terminal-type(tek) action.
vthide (class SmeBSB)
This entry invokes the set-visibility(vt,off) action.
altscreen (class SmeBSB)
This entry invokes the set-altscreen(toggle) action.
The fontMenu has the following entries:
fontdefault (class SmeBSB)
This entry invokes the set-vt-font(d) action.
font1 (class SmeBSB)
This entry invokes the set-vt-font(1) action.
font2 (class SmeBSB)
This entry invokes the set-vt-font(2) action.
font3 (class SmeBSB)
This entry invokes the set-vt-font(3) action.
font4 (class SmeBSB)
This entry invokes the set-vt-font(4) action.
font5 (class SmeBSB)
This entry invokes the set-vt-font(5) action.
font6 (class SmeBSB)
This entry invokes the set-vt-font(6) action.
fontescape (class SmeBSB)
This entry invokes the set-vt-font(e) action.
fontsel (class SmeBSB)
This entry invokes the set-vt-font(s) action.
font-linedrawing (class SmeBSB)
This entry invokes the set-font-linedrawing(s) action.
font-packed (class SmeBSB)
This entry invokes the set-font-packed(s) action.
font-doublesize (class SmeBSB)
This entry invokes the set-font-doublesize(s) action.
render-font (class SmeBSB)
This entry invokes the set-render-font(s) action.
utf8-mode (class SmeBSB)
This entry invokes the set-utf8-mode(s) action.
utf8-title (class SmeBSB)
This entry invokes the set-utf8-title(s) action.
The tekMenu has the following entries:
tektextlarge (class SmeBSB)
This entry invokes the set-tek-text(large) action.
tektext2 (class SmeBSB)
This entry invokes the set-tek-text(2) action.
tektext3 (class SmeBSB)
This entry invokes the set-tek-text(3) action.
tektextsmall (class SmeBSB)
This entry invokes the set-tek-text(small) action.
tekpage (class SmeBSB)
This entry invokes the tek-page() action.
tekreset (class SmeBSB)
This entry invokes the tek-reset() action.
tekcopy (class SmeBSB)
This entry invokes the tek-copy() action.
vtshow (class SmeBSB)
This entry invokes the set-visibility(vt,toggle) action.
vtmode (class SmeBSB)
This entry invokes the set-terminal-type(vt) action.
tekhide (class SmeBSB)
This entry invokes the set-visibility(tek,toggle) action.
Scrollbar Resources
The following resources are useful when specified for the Athena
Scrollbar widget:
thickness (class Thickness)
Specifies the width in pixels of the scrollbar.
background (class Background)
Specifies the color to use for the background of the scrollbar.
foreground (class Foreground)
Specifies the color to use for the foreground of the scrollbar.
The ``thumb'' of the scrollbar is a simple checkerboard pattern
alternating pixels for foreground and background color.
POINTER USAGE
Once the VT102 window is created, xterm allows you to select text and
copy it within the same or other windows.
SELECTION
The selection functions are invoked when the pointer buttons are used
with no modifiers, and when they are used with the ``shift'' key. The
assignment of the functions described below to keys and buttons may be
changed through the resource database; see ACTIONS below.
Pointer button one (usually left) is used to save text into the cut
buffer. Move the cursor to beginning of the text, and then hold the
button down while moving the cursor to the end of the region and
releasing the button. The selected text is highlighted and is saved in
the global cut buffer and made the PRIMARY selection when the button is
released. Normally (but see the discussion of on2Clicks, etc):
- Double-clicking selects by words.
- Triple-clicking selects by lines.
- Quadruple-clicking goes back to characters, etc.
Multiple-click is determined by the time from button up to button down,
so you can change the selection unit in the middle of a selection.
Logical words and lines selected by double- or triple-clicking may wrap
across more than one screen line if lines were wrapped by xterm itself
rather than by the application running in the window. If the
key/button bindings specify that an X selection is to be made, xterm
will leave the selected text highlighted for as long as it is the
selection owner.
Pointer button two (usually middle) ``types'' (pastes) the text from
the PRIMARY selection, if any, otherwise from the cut buffer, inserting
it as keyboard input.
Pointer button three (usually right) extends the current selection.
(Without loss of generality, you can swap ``right'' and ``left''
everywhere in the rest of this paragraph.) If pressed while closer to
the right edge of the selection than the left, it extends/contracts the
right edge of the selection. If you contract the selection past the
left edge of the selection, xterm assumes you really meant the left
edge, restores the original selection, then extends/contracts the left
edge of the selection. Extension starts in the selection unit mode
that the last selection or extension was performed in; you can
multiple-click to cycle through them.
By cutting and pasting pieces of text without trailing new lines, you
can take text from several places in different windows and form a
command to the shell, for example, or take output from a program and
insert it into your favorite editor. Since cut buffers are globally
shared among different applications, you may regard each as a ``file''
whose contents you know. The terminal emulator and other text programs
should be treating it as if it were a text file, i.e., the text is
delimited by new lines.
SCROLLING
The scroll region displays the position and amount of text currently
showing in the window (highlighted) relative to the amount of text
actually saved. As more text is saved (up to the maximum), the size of
the highlighted area decreases.
Clicking button one with the pointer in the scroll region moves the
adjacent line to the top of the display window.
Clicking button three moves the top line of the display window down to
the pointer position.
Clicking button two moves the display to a position in the saved text
that corresponds to the pointer's position in the scrollbar.
TEKTRONIX POINTER
Unlike the VT102 window, the Tektronix window does not allow the
copying of text. It does allow Tektronix GIN mode, and in this mode
the cursor will change from an arrow to a cross. Pressing any key will
send that key and the current coordinate of the cross cursor. Pressing
button one, two, or three will return the letters ``l'', ``m'', and
``r'', respectively. If the ``shift'' key is pressed when a pointer
button is pressed, the corresponding upper case letter is sent. To
distinguish a pointer button from a key, the high bit of the character
is set (but this is bit is normally stripped unless the terminal mode
is RAW; see tty(4) for details).
SELECT/PASTE
X clients provide select and paste support by responding to requests
conveyed by the server.
PRIMARY
When configured to use the primary selection, (the default) xterm can
provide the selection data in ways which help to retain character
encoding information as it is pasted.
A user "selects" text on xterm, which highlights the selected text. A
subsequent "paste" to another client forwards a request to the client
owning the selection. If xterm owns the primary selection, it makes
the data available in the form of one or more "selection targets". If
it does not own the primary selection, e.g., if it has released it or
another client has asserted ownership, it relies on cut-buffers to pass
the data. But cut-buffers handle only ISO-8859-1 data (officially -
some clients ignore the rules).
CLIPBOARD
When configured to use the clipboard (see resource selectToClipboard),
the problem with persistence of ownership is bypassed. Otherwise,
there is no difference regarding the data which can be passed via
selection.
SELECTION TARGETS
The different types of data which are passed depend on what the
receiving client asks for. These are termed selection targets.
When asking for the selection data, xterm tries the following types in
this order:
UTF8_STRING
This is an XFree86 extension, which denotes that the data
is encoded in UTF-8. When xterm is built with
wide-character support, it both accepts and provides this
type.
TEXT the text is in the encoding which corresponds to your
current locale.
COMPOUND_TEXT
this is a format for multiple character set data, such as
multi-lingual text. It can store UTF-8 data as a special
case.
STRING
This is Latin 1 (ISO-8859-1) data.
The middle two (TEXT and COMPOUND_TEXT) are added if xterm is
configured with the i18nSelections resource set to ``true''.
UTF8_STRING is preferred (therefore first in the list) since xterm
stores text as Unicode data when running in wide-character mode, and no
translation is needed. On the other hand, TEXT and COMPOUND_TEXT may
require translation. If the translation is incomplete, they will
insert X's ``defaultString'' whose value cannot be set, and may simply
be empty. Xterm's defaultString resource specifies the string to use
for incomplete translations of the UTF8_STRING.
You can alter the types which xterm tries using the eightBitSelectTypes
or utf8SelectTypes resources. For instance, you might have some
specific locale setting which does not use UTF-8 encoding. The
resource value is a comma-separated list of the selection targets,
which consist of the names shown. You can use the special name I18N to
denote the optional inclusion of TEXT and COMPOUND_TEXT. The names are
matched ignoring case, and can be abbreviated. The default list can be
expressed in several ways, e.g.,
UTF8_STRING,I18N,STRING
utf8,i18n,string
u,i,s
MENUS
Xterm has four menus, named mainMenu, vtMenu, fontMenu, and tekMenu.
Each menu pops up under the correct combinations of key and button
presses. Each menu is divided into sections, separated by a horizontal
line. Some menu entries correspond to modes that can be altered. A
check mark appears next to a mode that is currently active. Selecting
one of these modes toggles its state. Other menu entries are commands;
selecting one of these performs the indicated function.
All of the menu entries correspond to X actions. In the list below,
the menu label is shown followed by the action's name in parenthesis.
Main Options
The xterm mainMenu pops up when the ``control'' key and pointer button
one are pressed in a window. This menu contains items that apply to
both the VT102 and Tektronix windows. There are several sections:
Commands for managing X events:
Toolbar
Clicking on the "Toolbar" menu entry hides the toolbar if
it is visible, and shows it if it is not.
Secure Keyboard (securekbd)
The Secure Keyboard mode is helpful when typing in
passwords or other sensitive data in an unsecure
environment; see SECURITY below (but read the limitations
carefully).
Allow SendEvents (allowsends)
Specifies whether or not synthetic key and button events
generated using the X protocol SendEvent request should
be interpreted or discarded. This corresponds to the
allowSendEvents resource.
Redraw Window (redraw)
Forces the X display to repaint; useful in some
environments.
Commands for capturing output:
Log to File (logging)
Captures text sent to the screen in a logfile, as in the
-l logging option.
Print Window (print)
Sends the text of the current window to the program given
in the printerCommand resource.
Redirect to Printer (print-redir)
This sets the printerControlMode to 0 or 2. You can use
this to turn the printer on as if an application had sent
the appropriate control sequence. It is also useful for
switching the printer off if an application turns it on
without resetting the print control mode.
Modes for setting keyboard style:
8-Bit Controls (8-bit-control)
Enabled for VT220 emulation, this controls whether xterm
will send 8-bit control sequences rather than using 7-bit
(ASCII) controls, e.g., sending a byte in the range
128-159 rather than the escape character followed by a
second byte. Xterm always interprets both 8-bit and
7-bit control sequences (see the document Xterm Control
Sequences). This corresponds to the eightBitControl
resource.
Backarrow Key (BS/DEL) (backarrow key)
Modifies the behavior of the backarrow key, making it
transmit either a backspace (8) or delete (127)
character. This corresponds to the backarrowKey
resource.
Alt/NumLock Modifiers (num-lock)
Controls the treatment of Alt- and NumLock-key modifiers.
This corresponds to the numLock resource.
Meta Sends Escape (meta-esc)
Controls whether Meta keys are converted into a
two-character sequence with the character itself preceded
by ESC. This corresponds to the metaSendsEscape
resource.
Delete is DEL (delete-is-del)
Controls whether the Delete key on the editing keypad
should send DEL (127) or the VT220-style Remove escape
sequence. This corresponds to the deleteIsDEL resource.
Old Function-Keys (oldFunctionKeys)
HP Function-Keys (hpFunctionKeys)
SCO Function-Keys (scoFunctionKeys)
Sun Function-Keys (sunFunctionKeys)
VT220 Keyboard (sunKeyboard)
These act as a radio-button, selecting one style for the
keyboard layout. It corresponds to more than one
resource setting: sunKeyboard, sunFunctionKeys,
scoFunctionKeys and hpFunctionKeys ."
Commands for process signalling:
Send STOP Signal (suspend)
Send CONT Signal (continue)
Send INT Signal (interrupt)
Send HUP Signal (hangup)
Send TERM Signal (terminate)
Send KILL Signal (kill)
These send the SIGTSTP, SIGCONT, SIGINT, SIGHUP, SIGTERM
and SIGKILL signals respectively, to the process group of
the process running under xterm (usually the shell). The
SIGCONT function is especially useful if the user has
accidentally typed CTRL-Z, suspending the process.
Quit (quit)
Stop processing X events except to support the -hold
option, and then send a SIGHUP signal to the the process
group of the process running under xterm (usually the
shell).
VT Options
The vtMenu sets various modes in the VT102 emulation, and is popped up
when the ``control'' key and pointer button two are pressed in the
VT102 window.
VT102/VT220 Modes:
Enable Scrollbar (scrollbar)
Enable (or disable) the scrollbar. This corresponds to
the -sb option and the scrollBar resource.
Enable Jump Scroll (jumpscroll)
Enable (or disable) jump scrolling. This corresponds to
the -j option and the jumpScroll resource.
Enable Reverse Video (reversevideo)
Enable (or disable) reverse-video. This corresponds to
the -rv option and the reverseVideo resource.
Enable Auto Wraparound (autowrap)
Enable (or disable) auto-wraparound. This corresponds to
the -aw option and the autoWrap resource.
Enable Reverse Wraparound (reversewrap)
Enable (or disable) reverse wraparound. This corresponds
to the -rw option and the reverseWrap resource.
Enable Auto Linefeed (autolinefeed)
Enable (or disable) auto-linefeed. This is the VT102 NEL
function, which causes the emulator to emit a linefeed
after each carriage return. There is no corresponding
command-line option or resource setting.
Enable Application Cursor Keys (appcursor)
Enable (or disable) application cursor keys. This
corresponds to the appcursorDefault resource. There is
no corresponding command-line option.
Enable Application Keypad (appkeypad)
Enable (or disable) application keypad keys. This
corresponds to the appkeypadDefault resource. There is
no corresponding command-line option.
Scroll to Bottom on Key Press (scrollkey)
Enable (or disable) scrolling to the bottom of the
scrolling region on a keypress. This corresponds to the
-sk option and the scrollKey resource.
As a special case, the XON / XOFF keys (control/S and
control/Q) are ignored.
Scroll to Bottom on Tty Output (scrollttyoutput)
Enable (or disable) scrolling to the bottom of the
scrolling region on output to the terminal. This
corresponds to the -si option and the scrollTtyOutput
resource.
Allow 80/132 Column Switching (allow132)
Enable (or disable) switching between 80 and 132 columns.
This corresponds to the -132 option and the c132
resource.
Keep Selection (keepSelection)
Tell xterm whether to disown the selection when it stops
highlighting it, e.g., when an application modifies the
display so that it no longer matches the text which has
been highlighted. As long as xterm continues to own the
selection, it can provide the corresponding text to other
clients via cut/paste. This corresponds to the
keepSelection resource. There is no corresponding
command-line option.
Select to Clipboard (selectToClipboard)
Tell xterm whether to use the PRIMARY or CLIPBOARD for
SELECT tokens in the translations resource which maps
keyboard and mouse actions to select/paste actions. This
corresponds to the selectToClipboard resource. There is
no corresponding command-line option.
Enable Visual Bell (visualbell)
Enable (or disable) visible bell (i.e., flashing) instead
of an audible bell. This corresponds to the -vb option
and the visualBell resource.
Enable Bell Urgency (bellIsUrgent)
Enable (or disable) Urgency window manager hint when
Control-G is received. This corresponds to the
bellIsUrgent resource.
Enable Pop on Bell (poponbell)
Enable (or disable) raising of the window when Control-G
is received. This corresponds to the -pop option and the
popOnBell resource.
Enable Blinking Cursor (cursorblink)
Enable (or disable) the blinking-cursor feature. This
corresponds to the -bc option and the cursorBlink
resource. There is also an escape sequence (see the
document Xterm Control Sequences). The menu entry and
the escape sequence states are XOR'd: if both are
enabled, the cursor will not blink, if only one is
enabled, the cursor will blink.
Enable Alternate Screen Switching (titeInhibit)
Enable (or disable) switching between the normal and
alternate screens. This corresponds to the titeInhibit
resource. There is no corresponding command-line option.
Enable Active Icon (activeicon)
Enable (or disable) the active-icon feature. This
corresponds to the -ai option and the activeIcon
resource.
VT102/VT220 Commands:
Do Soft Reset (softreset)
Reset scroll regions. This can be convenient when some
program has left the scroll regions set incorrectly
(often a problem when using VMS or TOPS-20). This
corresponds to the VT220 DECSTR control sequence.
Do Full Reset (hardreset)
The full reset entry will clear the screen, reset tabs to
every eight columns, and reset the terminal modes (such
as wrap and smooth scroll) to their initial states just
after xterm has finished processing the command line
options. This corresponds to the VT102 RIS control
sequence, with a few obvious differences. For example,
your session is not disconnected as a real VT102 would
do.
Reset and Clear Saved Lines (clearsavedlines)
Perform a full reset, and also clear the saved lines.
Commands for setting the current screen:
Show Tek Window (tekshow)
When enabled, pops the Tektronix 4014 window up (makes it
visible). When disabled, hides the Tektronix 4014
window.
Switch to Tek Mode (tekmode)
When enabled, pops the Tektronix 4014 window up if it is
not already visible, and switches the input stream to
that window. When disabled, hides the Tektronix 4014
window and switches input back to the VTxxx window.
Hide VT Window (vthide)
When enabled, hides the VTxxx window, shows the Tektronix
4014 window if it was not already visible and switches
the input stream to that window. When disabled, shows
the VTxxx window, and switches the input stream to that
window.
Show Alternate Screen (altscreen)
When enabled, shows the alternate screen. When disabled,
shows the normal screen. Note that the normal screen may
have saved lines; the alternate screen does not.
VT Fonts
The fontMenu pops up when when the ``control'' key and pointer button
three are pressed in a window. It sets the font used in the VT102
window, or modifies the way the font is specified or displayed. There
are several sections.
The first section allows you to select the font from a set of
alternatives:
Default (fontdefault)
Set the font to the default, i.e., that given by the
*VT100.font resource.
Unreadable (font1)
Set the font to that given by the *VT100.font1 resource.
Tiny (font2)
Set the font to that given by the *VT100.font2 resource.
Small (font3)
Set the font to that given by the *VT100.font3 resource.
Medium (font4)
Set the font to that given by the *VT100.font4 resource.
Large (font5)
Set the font to that given by the *VT100.font5 resource.
Huge (font6)
Set the font to that given by the *VT100.font6 resource.
Escape Sequence
This allows you to set the font last specified by the Set
Font escape sequence (see the document Xterm Control
Sequences).
Selection (fontsel)
This allows you to set the font specified the current
selection as a font name (if the PRIMARY selection is
owned).
The second section allows you to modify the way it is displayed:
Line-Drawing Characters (font-linedrawing)
When set, tells xterm to draw its own line-drawing
characters. Otherwise it relies on the font containing
these. Compare to the forceBoxChars resource.
Packed Font (font-packed)
When set, tells xterm to use the minimum glyph-width from
a font when displaying characters. Use the maximum width
(unchecked) to help display proportional fonts. Compare
to the forcePackedFont resource.
Doublesized Characters (font-doublesize)
When set, xterm may ask the font server to produce scaled
versions of the normal font, for VT102 double-size
characters.
The third section allows you to modify the way it is specified:
TrueType Fonts (render-font)
If the renderFont and corresponding resources were set,
this is a further control whether xterm will actually use
the Xft library calls to obtain a font.
UTF-8 (utf8-mode)
This controls whether xterm uses UTF-8 encoding of
input/output. It is useful for temporarily switching
xterm to display text from an application which does not
follow the locale settings.
The fourth section allows you to enable or disable special operations
which can be controlled by writing escape sequences to the terminal.
These are disabled if the SendEvents feature is enabled:
Allow Color Ops (allow-font-ops)
This corresponds to the allowColorOps resource. Enable
or disable control sequences that set/query the colors.
Allow Font Ops (allow-font-ops)
This corresponds to the allowFontOps resource. Enable or
disable control sequences that set/query the font.
Allow Tcap Ops (allow-tcap-ops)
Enable or disable control sequences that query the
terminal's notion of its function-key strings, as termcap
or terminfo capabilities. This corresponds to the
allowTcapOps resource.
Allow Title Ops (allow-title-ops)
Enable or disable control sequences that modify the
window title or icon name. This corresponds to the
allowTitleOps resource.
Allow Window Ops (allow-window-ops)
Enable or disable extended window control sequences (as
used in dtterm). This corresponds to the allowWindowOps
resource.
TEK Options
The tekMenu sets various modes in the Tektronix emulation, and is
popped up when the ``control'' key and pointer button two are pressed
in the Tektronix window. The current font size is checked in the modes
section of the menu.
Large Characters (tektextlarge)
#2 Size Characters (tektext2)
#3 Size Characters (tektext3)
Small Characters (tektextsmall)
Commands:
PAGE (tekpage)
Clear the Tektronix window.
RESET (tekreset)
COPY (tekcopy)
Windows:
Show VT Window (vtshow)
Switch to VT Mode (vtmode)
Hide Tek Window (tekhide)
SECURITY
X environments differ in their security consciousness. Most servers,
run under xdm, are capable of using a ``magic cookie'' authorization
scheme that can provide a reasonable level of security for many people.
If your server is only using a host-based mechanism to control access
to the server (see xhost(1)), then if you enable access for a host and
other users are also permitted to run clients on that same host, it is
possible that someone can run an application which uses the basic
services of the X protocol to snoop on your activities, potentially
capturing a transcript of everything you type at the keyboard. Any
process which has access to your X display can manipulate it in ways
that you might not anticipate, even redirecting your keyboard to itself
and sending events to your application's windows. This is true even
with the ``magic cookie'' authorization scheme. While the
allowSendEvents provides some protection against rogue applications
tampering with your programs, guarding against a snooper is harder.
The possibility of an application spying on your keystrokes is of
particular concern when you want to type in a password or other
sensitive data. The best solution to this problem is to use a better
authorization mechanism than is provided by X. Given all of these
caveats, a simple mechanism exists for protecting keyboard input in
xterm.
The xterm menu (see MENUS above) contains a Secure Keyboard entry
which, when enabled, attempts to ensure that all keyboard input is
directed only to xterm (using the GrabKeyboard protocol request). When
an application prompts you for a password (or other sensitive data),
you can enable Secure Keyboard using the menu, type in the data, and
then disable Secure Keyboard using the menu again. This ensures that
you know which window is accepting your keystrokes. It cannot ensure
that there are no processes which have access to your X display that
might be observing the keystrokes as well.
Only one X client at a time can grab the keyboard, so when you attempt
to enable Secure Keyboard it may fail. In this case, the bell will
sound. If the Secure Keyboard succeeds, the foreground and background
colors will be exchanged (as if you selected the Reverse Video entry in
the Modes menu); they will be exchanged again when you exit secure
mode. If the colors do not switch, then you should be very suspicious
that you are being spoofed. If the application you are running
displays a prompt before asking for the password, it is safest to enter
secure mode before the prompt gets displayed, and to make sure that the
prompt gets displayed correctly (in the new colors), to minimize the
probability of spoofing. You can also bring up the menu again and make
sure that a check mark appears next to the entry.
Secure Keyboard mode will be disabled automatically if your xterm
window becomes iconified (or otherwise unmapped), or if you start up a
reparenting window manager (that places a title bar or other decoration
around the window) while in Secure Keyboard mode. (This is a feature
of the X protocol not easily overcome.) When this happens, the
foreground and background colors will be switched back and the bell
will sound in warning.
CHARACTER CLASSES
Clicking the left pointer button twice in rapid succession
(double-clicking) causes all characters of the same class (e.g.,
letters, white space, punctuation) to be selected as a ``word''. Since
different people have different preferences for what should be selected
(for example, should filenames be selected as a whole or only the
separate subnames), the default mapping can be overridden through the
use of the charClass (class CharClass) resource.
This resource is a series of comma-separated of range:value pairs. The
range is either a single number or low-high in the range of 0 to 65535,
corresponding to the code for the character or characters to be set.
The value is arbitrary, although the default table uses the character
number of the first character occurring in the set. When not in UTF-8
mode, only the first 256 bytes of this table will be used.
The default table starts as follows -
static int charClass[256] = {
/* NUL SOH STX ETX EOT ENQ ACK BEL */
32, 1, 1, 1, 1, 1, 1, 1,
/* BS HT NL VT NP CR SO SI */
1, 32, 1, 1, 1, 1, 1, 1,
/* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */
1, 1, 1, 1, 1, 1, 1, 1,
/* CAN EM SUB ESC FS GS RS US */
1, 1, 1, 1, 1, 1, 1, 1,
/* SP ! " # $ % & ' */
32, 33, 34, 35, 36, 37, 38, 39,
/* ( ) * + , - . / */
40, 41, 42, 43, 44, 45, 46, 47,
/* 0 1 2 3 4 5 6 7 */
48, 48, 48, 48, 48, 48, 48, 48,
/* 8 9 : ; < = > ? */
48, 48, 58, 59, 60, 61, 62, 63,
/* @ A B C D E F G */
64, 48, 48, 48, 48, 48, 48, 48,
/* H I J K L M N O */
48, 48, 48, 48, 48, 48, 48, 48,
/* P Q R S T U V W */
48, 48, 48, 48, 48, 48, 48, 48,
/* X Y Z [ \ ] ^ _ */
48, 48, 48, 91, 92, 93, 94, 48,
/* ` a b c d e f g */
96, 48, 48, 48, 48, 48, 48, 48,
/* h i j k l m n o */
48, 48, 48, 48, 48, 48, 48, 48,
/* p q r s t u v w */
48, 48, 48, 48, 48, 48, 48, 48,
/* x y z { | } ~ DEL */
48, 48, 48, 123, 124, 125, 126, 1,
/* x80 x81 x82 x83 IND NEL SSA ESA */
1, 1, 1, 1, 1, 1, 1, 1,
/* HTS HTJ VTS PLD PLU RI SS2 SS3 */
1, 1, 1, 1, 1, 1, 1, 1,
/* DCS PU1 PU2 STS CCH MW SPA EPA */
1, 1, 1, 1, 1, 1, 1, 1,
/* x98 x99 x9A CSI ST OSC PM APC */
1, 1, 1, 1, 1, 1, 1, 1,
/* - i c/ L ox Y- | So */
160, 161, 162, 163, 164, 165, 166, 167,
/* .. c0 ip << _ R0 - */
168, 169, 170, 171, 172, 173, 174, 175,
/* o +- 2 3 ' u q| . */
176, 177, 178, 179, 180, 181, 182, 183,
/* , 1 2 >> 1/4 1/2 3/4 ? */
184, 185, 186, 187, 188, 189, 190, 191,
/* A` A' A^ A~ A: Ao AE C, */
48, 48, 48, 48, 48, 48, 48, 48,
/* E` E' E^ E: I` I' I^ I: */
48, 48, 48, 48, 48, 48, 48, 48,
/* D- N~ O` O' O^ O~ O: X */
48, 48, 48, 48, 48, 48, 48, 215,
/* O/ U` U' U^ U: Y' P B */
48, 48, 48, 48, 48, 48, 48, 48,
/* a` a' a^ a~ a: ao ae c, */
48, 48, 48, 48, 48, 48, 48, 48,
/* e` e' e^ e: i` i' i^ i: */
48, 48, 48, 48, 48, 48, 48, 48,
/* d n~ o` o' o^ o~ o: -: */
48, 48, 48, 48, 48, 48, 48, 247,
/* o/ u` u' u^ u: y' P y: */
48, 48, 48, 48, 48, 48, 48, 48};
For example, the string ``33:48,37:48,45-47:48,38:48'' indicates that
the exclamation mark, percent sign, dash, period, slash, and ampersand
characters should be treated the same way as characters and numbers.
This is useful for cutting and pasting electronic mailing addresses and
filenames.
ACTIONS
It is possible to rebind keys (or sequences of keys) to arbitrary
strings for input, by changing the translations resources for the vt100
or tek4014 widgets. Changing the translations resource for events
other than key and button events is not expected, and will cause
unpredictable behavior. The following actions are provided for use
within the vt100 or tek4014 translations resources:
allow-color-ops(on/off/toggle)
This action set or toggles the allowColorOps resource and is
also invoked by the allow-color-ops entry in fontMenu.
allow-font-ops(on/off/toggle)
This action set or toggles the allowFontOps resource and is
also invoked by the allow-font-ops entry in fontMenu.
allow-send-events(on/off/toggle)
This action set or toggles the allowSendEvents resource and is
also invoked by the allowsends entry in mainMenu.
allow-tcap-ops(on/off/toggle)
This action set or toggles the allowTcapOps resource and is
also invoked by the allow-tcap-ops entry in fontMenu.
allow-title-ops(on/off/toggle)
This action set or toggles the allowTitleOps resource and is
also invoked by the allow-title-ops entry in fontMenu.
allow-window-ops(on/off/toggle)
This action set or toggles the allowWindowOps resource and is
also invoked by the allow-window-ops entry in fontMenu.
alt-sends-escape()
This action toggles the state of the eightBitInput resource.
bell([percent])
This action rings the keyboard bell at the specified percentage
above or below the base volume.
clear-saved-lines()
This action does hard-reset() (see below) and also clears the
history of lines saved off the top of the screen. It is also
invoked from the clearsavedlines entry in vtMenu. The effect
is identical to a hardware reset (RIS) control sequence.
copy-selection(destname [, ...])
This action puts the currently selected text into all of the
selections or cutbuffers specified by destname. Unlike
select-end, it does not send a mouse position or otherwise
modify the internal selection state.
create-menu(m/v/f/t)
This action creates one of the menus used by xterm, if it has
not been previously created. The parameter values are the menu
names: mainMenu, vtMenu, fontMenu, tekMenu, respectively.
dabbrev-expand()
Expands the word before cursor by searching in the preceding
text on the screen and in the scrollback buffer for words
starting with that abbreviation. Repeating dabbrev-expand()
several times in sequence searches for an alternative expansion
by looking farther back. Lack of more matches is signaled by a
beep(). Attempts to expand an empty word (i.e., when cursor is
preceded by a space) yield successively all previous words.
Consecutive identical expansions are ignored. The word here is
defined as a sequence of non-whitespace characters. This
feature partially emulates the behavior of ``dynamic
abbreviation'' expansion in Emacs (bound there to M-/). Here
is a resource setting for xterm which will do the same thing:
*VT100*translations: #override \n\
Meta <KeyPress> /:dabbrev-expand()deiconify()
Changes the window state back to normal, if it was iconified.
delete-is-del()
This action toggles the state of the deleteIsDEL resource.
dired-button()
Handles a button event (other than press and release) by
echoing the event's position (i.e., character line and column)
in the following format:
^X ESC G <line+`` ''> <col+`` ''>
iconify()
Iconifies the window.
hard-reset()
This action resets the scrolling region, tabs, window size, and
cursor keys and clears the screen. It is also invoked from the
hardreset entry in vtMenu.
ignore()
This action ignores the event but checks for special pointer
position escape sequences.
insert()
This action inserts the character or string associated with the
key that was pressed.
insert-eight-bit()
This action inserts an eight-bit (Meta) version of the
character or string associated with the key that was pressed.
This only applies to single-byte values. The exact action
depends on the value of the metaSendsEscape and the
eightBitInput resources. The metaSendsEscape resource is
tested first.
The term "eight-bit" is misleading: xterm checks if the key's
value is less than 128. If so, xterm adds 128 to the value,
setting its eighth bit. Otherwise xterm sends an ESC byte
before the key. In other applications' documentation, that is
referred to as a "meta key".
insert-selection(sourcename [, ...])
This action inserts the string found in the selection or
cutbuffer indicated by sourcename. Sources are checked in the
order given (case is significant) until one is found.
Commonly-used selections include: PRIMARY, SECONDARY, and
CLIPBOARD. Cut buffers are typically named CUT_BUFFER0 through
CUT_BUFFER7.
insert-seven-bit()
This action is a synonym for insert() The term "seven-bit" is
misleading: it only implies that xterm does not try to add 128
to the key's value as in insert-eight-bit().
interpret(control-sequence)
Interpret the given control sequence locally, i.e., without
passing it to the host. This works by inserting the control
sequence at the front of the input buffer. Use "\" to escape
octal digits in the string. Xt does not allow you to put a
null character (i.e., "\000") in the string.
keymap(name)
This action dynamically defines a new translation table whose
resource name is name with the suffix Keymap (case is
significant). The name None restores the original translation
table.
larger-vt-font()
Set the font to the next larger one, based on the font
dimensions. See also set-vt-font().
load-vt-fonts(name[,class])
Load fontnames from the given subresource name and class. That
is, load the "*VT100.name.font", resource as "*VT100.font" etc.
If no name is given, the original set of fontnames is restored.
Unlike set-vt-font(), this does not affect the escape- and
select-fonts, since those are not based on resource values. It
does affect the fonts loosely organized under the ``Default''
menu entry, including font, boldFont, wideFont and
wideBoldFont.
maximize()
Resizes the window to fill the screen.
meta-sends-escape()
This action toggles the state of the metaSendsEscape resource.
popup-menu(menuname)
This action displays the specified popup menu. Valid names
(case is significant) include: mainMenu, vtMenu, fontMenu, and
tekMenu.
print(printer-flags)
This action prints the window and is also invoked by the print
entry in mainMenu.
The action accepts optional parameters, which temporarily
override resource settings. The parameter values are matched
ignoring case:
noFormFeed
no form feed will be sent at the end of the last line
printed (i.e., printerFormFeed is ``false'').
FormFeed
a form feed will be sent at the end of the last line
printed (i.e., printerFormFeed is ``true'').
noNewLine
no newline will be sent at the end of the last line
printed, and wrapped lines will be combined into long
lines (i.e., printerNewLine is ``false'').
NewLine
a newline will be sent at the end of the last line
printed, and each line will be limited (by adding a
newline) to the screen width (i.e., printerNewLine is
``true'').
noAttrs
the page is printed without attributes (i.e.,
printAttributes is ``0'').
monoAttrs
the page is printed with monochrome (vt220) attributes
(i.e., printAttributes is ``1'').
colorAttrs
the page is printed with ANSI color attributes (i.e.,
printAttributes is ``2'').
print-everything(printer-flags)
This action sends the entire text history, in addition to the
text currently visible, to the program given in the
printerCommand resource. It allows the same optional
parameters as the print action. With a suitable printer
command, the action can be used to load the text history in an
editor.
print-redir()
This action toggles the printerControlMode between 0 and 2.
The corresponding popup menu entry is useful for switching the
printer off if you happen to change your mind after deciding to
print random binary files on the terminal.
quit() This action sends a SIGHUP to the subprogram and exits. It is
also invoked by the quit entry in mainMenu.
readline-button()
Supports the optional readline feature by echoing repeated
cursor forward or backward control sequences on button release
event, to request that the host application update its notion
of the cursor's position to match the button event.
redraw()
This action redraws the window and is also invoked by the
redraw entry in mainMenu.
restore()
Restores the window to the size before it was last maximized.
scroll-back(count [,units [,mouse] ])
This action scrolls the text window backward so that text that
had previously scrolled off the top of the screen is now
visible.
The count argument indicates the number of units (which may be
page, halfpage, pixel, or line) by which to scroll.
An adjustment can be specified for these values by appending a
"+" or "-" sign followed by a number, e.g., page-2 to specify 2
lines less than a page.
If the third parameter mouse is given, the action is ignored
when mouse reporting is enabled.
scroll-forw(count [,units [,mouse] ])
This action is similar to scroll-back except that it scrolls in
the other direction.
secure()
This action toggles the Secure Keyboard mode described in the
section named SECURITY, and is invoked from the securekbd entry
in mainMenu.
scroll-lock(on/off/toggle)
This action toggles internal state which tells xterm whether
Scroll Lock is active, subject to the allowScrollLock resource.
select-cursor-end(destname [, ...])
This action is similar to select-end except that it should be
used with select-cursor-start.
select-cursor-extend()
This action is similar to select-extend except that it should
be used with select-cursor-start.
select-cursor-start()
This action is similar to select-start except that it begins
the selection at the current text cursor position.
select-end(destname [, ...])
This action puts the currently selected text into all of the
selections or cutbuffers specified by destname. It also sends
a mouse position and updates the internal selection state to
reflect the end of the selection process.
select-extend()
This action tracks the pointer and extends the selection. It
should only be bound to Motion events.
select-set()
This action stores text that corresponds to the current
selection, without affecting the selection mode.
select-start()
This action begins text selection at the current pointer
location. See the section on POINTER USAGE for information on
making selections.
send-signal(signame)
This action sends the signal named by signame to the xterm
subprocess (the shell or program specified with the -e command
line option) and is also invoked by the suspend, continue,
interrupt, hangup, terminate, and kill entries in mainMenu.
Allowable signal names are (case is not significant): tstp (if
supported by the operating system), suspend (same as tstp),
cont (if supported by the operating system), int, hup, term,
quit, alrm, alarm (same as alrm) and kill.
set-8-bit-control(on/off/toggle)
This action toggles the eightBitControl resource and is also
invoked from the 8-bit-control entry in vtMenu.
set-allow132(on/off/toggle)
This action toggles the c132 resource and is also invoked from
the allow132 entry in vtMenu.
set-altscreen(on/off/toggle)
This action toggles between the alternate and current screens.
set-appcursor(on/off/toggle)
This action toggles the handling Application Cursor Key mode
and is also invoked by the appcursor entry in vtMenu.
set-appkeypad(on/off/toggle)
This action toggles the handling of Application Keypad mode and
is also invoked by the appkeypad entry in vtMenu.
set-autolinefeed(on/off/toggle)
This action toggles automatic insertion of linefeeds and is
also invoked by the autolinefeed entry in vtMenu.
set-autowrap(on/off/toggle)
This action toggles automatic wrapping of long lines and is
also invoked by the autowrap entry in vtMenu.
set-backarrow(on/off/toggle)
This action toggles the backarrowKey resource and is also
invoked from the backarrow key entry in vtMenu.
set-bellIsUrgent(on/off/toggle)
This action toggles the bellIsUrgent resource and is also
invoked by the bellIsUrgent entry in vtMenu.
set-cursorblink(on/off/toggle)
This action toggles the cursorBlink resource and is also
invoked from the cursorblink entry in vtMenu.
set-cursesemul(on/off/toggle)
This action toggles the curses resource and is also invoked
from the cursesemul entry in vtMenu.
set-font-doublesize(on/off/toggle)
This action toggles the fontDoublesize resource and is also
invoked by the font-doublesize entry in fontMenu.
set-hp-function-keys(on/off/toggle)
This action toggles the hpFunctionKeys resource and is also
invoked by the hpFunctionKeys entry in mainMenu.
set-jumpscroll(on/off/toggle)
This action toggles the jumpscroll resource and is also invoked
by the jumpscroll entry in vtMenu.
set-font-linedrawing(on/off/toggle)
This action toggles the xterm's state regarding whether the
current font has line-drawing characters and whether it should
draw them directly. It is also invoked by the font-linedrawing
entry in fontMenu.
set-font-packed(on/off/toggle)
This action toggles the forcePackedFont's resource which
controls use of the font's minimum or maximum glyph width. It
is also invoked by the font-packed entry in fontMenu.
set-keep-selection(on/off/toggle)
This action toggles the keepSelection resource and is also
invoked by the keepSelection entry in vtMenu.
set-logging()
This action toggles the state of the logging option.
set-old-function-keys(on/off/toggle)
This action toggles the state of legacy function keys and is
also invoked by the oldFunctionKeys entry in mainMenu.
set-marginbell(on/off/toggle)
This action toggles the marginBell resource.
set-num-lock()
This action toggles the state of the numLock resource.
set-pop-on-bell(on/off/toggle)
This action toggles the popOnBell resource and is also invoked
by the poponbell entry in vtMenu.
set-render-font(on/off/toggle)
This action toggles the renderFont resource and is also invoked
by the render-font entry in fontMenu.
set-reverse-video(on/off/toggle)
This action toggles the reverseVideo resource and is also
invoked by the reversevideo entry in vtMenu.
set-reversewrap(on/off/toggle)
This action toggles the reverseWrap resource and is also
invoked by the reversewrap entry in vtMenu.
set-scroll-on-key(on/off/toggle)
This action toggles the scrollKey resource and is also invoked
from the scrollkey entry in vtMenu.
set-scroll-on-tty-output(on/off/toggle)
This action toggles the scrollTtyOutput resource and is also
invoked from the scrollttyoutput entry in vtMenu.
set-scrollbar(on/off/toggle)
This action toggles the scrollbar resource and is also invoked
by the scrollbar entry in vtMenu.
set-select(on/off/toggle)
This action toggles the selectToClipboard resource and is also
invoked by the selectToClipboard entry in vtMenu.
set-sco-function-keys(on/off/toggle)
This action toggles the scoFunctionKeys resource and is also
invoked by the scoFunctionKeys entry in mainMenu.
set-sun-function-keys(on/off/toggle)
This action toggles the sunFunctionKeys resource and is also
invoked by the sunFunctionKeys entry in mainMenu.
set-sun-keyboard(on/off/toggle)
This action toggles the sunKeyboard resource and is also
invoked by the sunKeyboard entry in mainMenu.
set-tek-text(large/2/3/small)
This action sets font used in the Tektronix window to the value
of the resources tektextlarge, tektext2, tektext3, and
tektextsmall according to the argument. It is also invoked by
the entries of the same names as the resources in tekMenu.
set-terminal-type(type)
This action directs output to either the vt or tek windows,
according to the type string. It is also invoked by the
tekmode entry in vtMenu and the vtmode entry in tekMenu.
set-titeInhibit(on/off/toggle)
This action toggles the titeInhibit resource, which controls
switching between the alternate and current screens.
set-toolbar(on/off/toggle)
This action toggles the toolbar feature and is also invoked by
the toolbar entry in mainMenu.
set-utf8-mode(on/off/toggle)
This action toggles the utf8 resource and is also invoked by
the utf8-mode entry in fontMenu.
set-utf8-title(on/off/toggle)
This action toggles the utf8Title resource and is also invoked
by the utf8-title entry in fontMenu.
set-visibility(vt/tek,on/off/toggle)
This action controls whether or not the vt or tek windows are
visible. It is also invoked from the tekshow and vthide
entries in vtMenu and the vtshow and tekhide entries in
tekMenu.
set-visual-bell(on/off/toggle)
This action toggles the visualBell resource and is also invoked
by the visualbell entry in vtMenu.
set-vt-font(d/1/2/3/4/5/6/e/s [,normalfont [, boldfont]])
This action sets the font or fonts currently being used in the
VT102 window. The first argument is a single character that
specifies the font to be used:
d or D indicate the default font (the font initially used when
xterm was started),
1 through 6 indicate the fonts specified by the font1 through
font6 resources,
e or E indicate the normal and bold fonts that have been set
through escape codes (or specified as the second and
third action arguments, respectively), and
s or S indicate the font selection (as made by programs such as
xfontsel(1)) indicated by the second action argument.
If xterm is configured to support wide characters, an additional
two optional parameters are recognized for the e argument: wide
font and wide bold font.
smaller-vt-font()
Set the font to the next smaller one, based on the font
dimensions. See also set-vt-font().
soft-reset()
This action resets the scrolling region and is also invoked
from the softreset entry in vtMenu. The effect is identical to
a soft reset (DECSTR) control sequence.
spawn-new-terminal(params)
Spawn a new xterm process. This is available on systems which
have a modern version of the process filesystem, e.g., "/proc",
which xterm can read.
Use the "cwd" process entry, e.g., /proc/12345/cwd to obtain
the working directory of the process which is running in the
current xterm.
On systems which have the "exe" process entry, e.g.,
/proc/12345/exe, use this to obtain the actual executable.
Otherwise, use the $PATH variable to find xterm.
If parameters are given in the action, pass them to the new
xterm process.
start-extend()
This action is similar to select-start except that the
selection is extended to the current pointer location.
start-cursor-extend()
This action is similar to select-extend except that the
selection is extended to the current text cursor position.
string(string)
This action inserts the specified text string as if it had been
typed. Quotation is necessary if the string contains
whitespace or non-alphanumeric characters. If the string
argument begins with the characters ``0x'', it is interpreted
as a hex character constant.
tek-copy()
This action copies the escape codes used to generate the
current window contents to a file in the current directory
beginning with the name COPY. It is also invoked from the
tekcopy entry in tekMenu.
tek-page()
This action clears the Tektronix window and is also invoked by
the tekpage entry in tekMenu.
tek-reset()
This action resets the Tektronix window and is also invoked by
the tekreset entry in tekMenu.
vi-button()
Handles a button event (other than press and release) by
echoing a control sequence computed from the event's line
number in the screen relative to the current line:
ESC ^P
or
ESC ^N
according to whether the event is before, or after the current
line, respectively. The ^N (or ^P) is repeated once for each
line that the event differs from the current line. The control
sequence is omitted altogether if the button event is on the
current line.
visual-bell()
This action flashes the window quickly.
The Tektronix window also has the following action:
gin-press(l/L/m/M/r/R)
This action sends the indicated graphics input code.
The default bindings in the VT102 window use the SELECT token, which is
set by the selectToClipboard resource:
Shift <KeyPress> Prior:scroll-back(1,halfpage) \n\
Shift <KeyPress> Next:scroll-forw(1,halfpage) \n\
Shift <KeyPress> Select:select-cursor-start() \
select-cursor-end(SELECT, CUT_BUFFER0) \n\
Shift <KeyPress> Insert:insert-selection(SELECT, CUT_BUFFER0) \n\
<KeyRelease> Scroll_Lock:scroll-lock() \n\
Shift~Ctrl <KeyPress> KP_Add:larger-vt-font() \n\
Shift Ctrl <KeyPress> KP_Add:smaller-vt-font() \n\
Shift <KeyPress> KP_Subtract:smaller-vt-font() \n\
~Meta <KeyPress>:insert-seven-bit() \n\
Meta <KeyPress>:insert-eight-bit() \n\
!Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
!Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
!Lock Ctrl @Num_Lock <Btn1Down>:popup-menu(mainMenu) \n\
! @Num_Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
~Meta <Btn1Down>:select-start() \n\
~Meta <Btn1Motion>:select-extend() \n\
!Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
!Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
!Lock Ctrl @Num_Lock <Btn2Down>:popup-menu(vtMenu) \n\
! @Num_Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
~Ctrl ~Meta <Btn2Down>:ignore() \n\
Meta <Btn2Down>:clear-saved-lines() \n\
~Ctrl ~Meta <Btn2Up>:insert-selection(SELECT, CUT_BUFFER0) \n\
!Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
!Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
!Lock Ctrl @Num_Lock <Btn3Down>:popup-menu(fontMenu) \n\
! @Num_Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
~Ctrl ~Meta <Btn3Down>:start-extend() \n\
~Meta <Btn3Motion>:select-extend() \n\
Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
Lock @Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
@Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage,m) \n\
<Btn4Down>:scroll-back(5,line,m) \n\
Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
Lock @Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
@Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage,m) \n\
<Btn5Down>:scroll-forw(5,line,m) \n\
<BtnUp>:select-end(SELECT, CUT_BUFFER0) \n\
<BtnDown>:ignore()
The default bindings for the scrollbar widget are separate from the
VT100 widget:
<Btn5Down>: StartScroll(Forward) \n\
<Btn1Down>: StartScroll(Forward) \n\
<Btn2Down>: StartScroll(Continuous)MoveThumb()NotifyThumb() \n\
<Btn3Down>: StartScroll(Backward) \n\
<Btn4Down>: StartScroll(Backward) \n\
<Btn2Motion>: MoveThumb()NotifyThumb() \n\
<BtnUp>: NotifyScroll(Proportional)EndScroll()
The default bindings in the Tektronix window are:
~Meta<KeyPress>: insert-seven-bit() \n\
Meta<KeyPress>: insert-eight-bit() \n\
!Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
!Lock Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
!Lock Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
!Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
!Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
!Lock Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
!Lock Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
!Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
Shift ~Meta<Btn1Down>: gin-press(L) \n\
~Meta<Btn1Down>: gin-press(l) \n\
Shift ~Meta<Btn2Down>: gin-press(M) \n\
~Meta<Btn2Down>: gin-press(m) \n\
Shift ~Meta<Btn3Down>: gin-press(R) \n\
~Meta<Btn3Down>: gin-press(r)
Here is an example which uses shifted select/paste to copy to the
clipboard, and unshifted select/paste for the primary selection. In
each case, a (different) cut buffer is also a target or source of the
select/paste operation. It is important to remember however, that cut
buffers store data in ISO-8859-1 encoding, while selections can store
data in a variety of formats and encodings. While xterm owns the
selection, it highlights it. When it loses the selection, it removes
the corresponding highlight. But you can still paste from the
corresponding cut buffer.
*VT100*translations: #override \n\
~Shift~Ctrl<Btn2Up>: insert-selection(PRIMARY, CUT_BUFFER0) \n\
Shift~Ctrl<Btn2Up>: insert-selection(CLIPBOARD, CUT_BUFFER1) \n\
~Shift<BtnUp>: select-end(PRIMARY, CUT_BUFFER0) \n\
Shift<BtnUp>: select-end(CLIPBOARD, CUT_BUFFER1)
Below is a sample how of the keymap() action is used to add special
keys for entering commonly-typed works:
*VT100.Translations: #override <Key>F13: keymap(dbx)
*VT100.dbxKeymap.translations: \
<Key>F14: keymap(None) \n\
<Key>F17: string("next") string(0x0d) \n\
<Key>F18: string("step") string(0x0d) \n\
<Key>F19: string("continue") string(0x0d) \n\
<Key>F20: string("print ") insert-selection(PRIMARY, CUT_BUFFER0)
Some people prefer using the left pointer button for dragging the
scrollbar thumb. That can be setup by altering the translations
resource, e.g.,
*VT100.scrollbar.translations: #override \n\
<Btn5Down>: StartScroll(Forward) \n\
<Btn1Down>: StartScroll(Continuous)MoveThumb()NotifyThumb() \n\
<Btn4Down>: StartScroll(Backward) \n\
<Btn1Motion>: MoveThumb()NotifyThumb() \n\
<BtnUp>: NotifyScroll(Proportional)EndScroll()CONTROL SEQUENCES AND KEYBOARD
The Xterm Control Sequences document lists the control sequences which
an application can send xterm to make it perform various operations.
Most of these operations are standardized, from either the DEC or
Tektronix terminals, or from more widely used standards such as
ISO-6429.
ENVIRONMENT
Xterm sets several environment variables:
DISPLAY
is the display name, pointing to the X server (see DISPLAY NAMES
in X(7)).
TERM is set according to the termcap (or terminfo) entry which it is
using as a reference.
WINDOWID
is set to the X window id number of the xterm window.
XTERM_LOCALE
shows the locale which was used by xterm on startup. Some shell
initialization scripts may set a different locale.
XTERM_SHELL
is set to the pathname of the program which is invoked. Usually
that is a shell program, e.g., /bin/sh. Since it is not
necessarily a shell program however, it is distinct from
``SHELL''.
XTERM_VERSION
is set to the string displayed by the -version option. That is
normally an identifier for the X Window libraries used to build
xterm, followed by xterm's patch number in parenthesis. The patch
number is also part of the response to a Secondary Device
Attributes (DA) control sequence (see Xterm Control Sequences).
Depending on your system configuration, xterm may also set the
following:
COLUMNS
the width of the xterm in characters (cf: "stty columns").
HOME when xterm is configured to update utmp.
LINES
the height of the xterm in characters (cf: "stty rows").
LOGNAME
when xterm is configured to update utmp.
SHELL
when xterm is configured to update utmp. It is also set if you
provide the shell name as the optional parameter.
TERMCAP
the contents of the termcap entry corresponding to $TERM, with
lines and columns values substituted for the actual size window
you have created.
TERMINFO
may be defined to a nonstandard location in the configure script.
FILES
The actual pathnames given may differ on your system.
/etc/utmp
the system logfile, which records user logins.
/etc/wtmp
the system logfile, which records user logins and logouts.
/etc/X11/app-defaults/XTerm
the xterm default application resources.
/etc/X11/app-defaults/XTerm-color
the xterm color application resources. If your display supports
color, use this
*customization: -color
in your .Xdefaults file to automatically use this resource file
rather than /etc/X11/app-defaults/XTerm. If you do not do this,
xterm uses its compiled-in default resource settings for colors.
ERROR MESSAGES
Most of the fatal error messages from xterm use the following format:
xterm: Error XXX, errno YYY: ZZZ
The XXX codes (which are used by xterm as its exit-code) are listed
below, with a brief explanation.
1 is used for miscellaneous errors, usually accompanied by a
specific message,
11 ERROR_FIONBIO
main: ioctl() failed on FIONBIO
12 ERROR_F_GETFL
main: ioctl() failed on F_GETFL
13 ERROR_F_SETFL
main: ioctl() failed on F_SETFL
14 ERROR_OPDEVTTY
spawn: open() failed on /dev/tty
15 ERROR_TIOCGETP
spawn: ioctl() failed on TIOCGETP
17 ERROR_PTSNAME
spawn: ptsname() failed
18 ERROR_OPPTSNAME
spawn: open() failed on ptsname
19 ERROR_PTEM
spawn: ioctl() failed on I_PUSH/"ptem"
20 ERROR_CONSEM
spawn: ioctl() failed on I_PUSH/"consem"
21 ERROR_LDTERM
spawn: ioctl() failed on I_PUSH/"ldterm"
22 ERROR_TTCOMPAT
spawn: ioctl() failed on I_PUSH/"ttcompat"
23 ERROR_TIOCSETP
spawn: ioctl() failed on TIOCSETP
24 ERROR_TIOCSETC
spawn: ioctl() failed on TIOCSETC
25 ERROR_TIOCSETD
spawn: ioctl() failed on TIOCSETD
26 ERROR_TIOCSLTC
spawn: ioctl() failed on TIOCSLTC
27 ERROR_TIOCLSET
spawn: ioctl() failed on TIOCLSET
28 ERROR_INIGROUPS
spawn: initgroups() failed
29 ERROR_FORK
spawn: fork() failed
30 ERROR_EXEC
spawn: exec() failed
32 ERROR_PTYS
get_pty: not enough ptys
34 ERROR_PTY_EXEC
waiting for initial map
35 ERROR_SETUID
spawn: setuid() failed
36 ERROR_INIT
spawn: can't initialize window
46 ERROR_TIOCKSET
spawn: ioctl() failed on TIOCKSET
47 ERROR_TIOCKSETC
spawn: ioctl() failed on TIOCKSETC
49 ERROR_LUMALLOC
luit: command-line malloc failed
50 ERROR_SELECT
in_put: select() failed
54 ERROR_VINIT
VTInit: can't initialize window
57 ERROR_KMMALLOC1
HandleKeymapChange: malloc failed
60 ERROR_TSELECT
Tinput: select() failed
64 ERROR_TINIT
TekInit: can't initialize window
71 ERROR_BMALLOC2
SaltTextAway: malloc() failed
80 ERROR_LOGEXEC
StartLog: exec() failed
83 ERROR_XERROR
xerror: XError event
84 ERROR_XIOERROR
xioerror: X I/O error
90 ERROR_SCALLOC
Alloc: calloc() failed on base
91 ERROR_SCALLOC2
Alloc: calloc() failed on rows
102 ERROR_SAVE_PTR
ScrnPointers: malloc/realloc() failed
121 ERROR_MMALLOC
my_memmove: malloc/realloc failed
BUGS
Large pastes do not work on some systems. This is not a bug in xterm;
it is a bug in the pseudo terminal driver of those systems. xterm
feeds large pastes to the pty only as fast as the pty will accept data,
but some pty drivers do not return enough information to know if the
write has succeeded.
Many of the options are not resettable after xterm starts.
This program still needs to be rewritten. It should be split into very
modular sections, with the various emulators being completely separate
widgets that do not know about each other. Ideally, you'd like to be
able to pick and choose emulator widgets and stick them into a single
control widget.
There needs to be a dialog box to allow entry of the Tek COPY file
name.
SEE ALSOresize(1), luit(1), X(7), pty(4), tty(4)
Xterm Control Sequences (this is the file ctlseqs.ms).
http://invisible-island.net/xterm/xterm.html
http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
AUTHORS
Far too many people, including:
Loretta Guarino Reid (DEC-UEG-WSL), Joel McCormack (DEC-UEG-WSL), Terry
Weissman (DEC-UEG-WSL), Edward Moy (Berkeley), Ralph R. Swick
(MIT-Athena), Mark Vandevoorde (MIT-Athena), Bob McNamara (DEC-MAD),
Jim Gettys (MIT-Athena), Bob Scheifler (MIT X Consortium), Doug Mink
(SAO), Steve Pitschke (Stellar), Ron Newman (MIT-Athena), Jim Fulton
(MIT X Consortium), Dave Serisky (HP), Jonathan Kamens (MIT-Athena),
Jason Bacon, Stephen P. Wall, David Wexelblat, and Thomas Dickey
(invisible-island.net).
OPENBSD SPECIFICS
On OpenBSD, the following resources have different default values:
allowFontOps: false
allowWindowOps: false
Various, potentially dangerous, extended window control
sequences are disabled.
deleteIsDEL: true
The Delete key generates ^?.
ptyInitialErase: true
The erase character for the tty is inherited from the parent
process setting, generally ^?.
backarrowKeyIsErase: true
The back arrow key is set to return the erase character defined
in the tty, generally ^?.
Moreover, on OpenBSD the termcap(5) entry for xterm defines the kb
capability as ^?
X Window System
