xo_err man page on DragonFly

xo_err man page on DragonFly

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LIBXO(3)		 BSD Library Functions Manual		      LIBXO(3)

NAME
     xo_err — emit errors and warnings in multiple formats

LIBRARY
     library “libxo”

SYNOPSIS
     #include <libxo/xo.h>

     void
     xo_warn(const char *fmt, ...);

     void
     xo_warnx(const char *fmt, ...);

     void
     xo_warn_c(int code, const char *fmt, ...);

     void
     xo_warn_hc(xo_handle_t *xop, int code, const char *fmt, ...);

     void
     xo_err(int eval, const char *fmt, ...);

     void
     xo_errc(int eval, int code, const char *fmt, ...);

     void
     xo_errx(int eval, const char *fmt, ...);

     void
     xo_message(const char *fmt, ...);

     void
     xo_message_c(int code, const char *fmt, ...);

     void
     xo_message_hc(xo_handle_t *xop, int code, const char *fmt, ...);

     void
     xo_message_hcv(xo_handle_t *xop, int code, const char *fmt, va_list vap);

DESCRIPTION
     Many programs make use of the standard library functions err(3) and
     warn(3) to generate errors and warnings for the user.  libxo wants to
     pass that information via the current output style, and provides compati‐
     ble functions to allow this.

     These functions display the program name, a colon, a formatted message
     based on the arguments, and then optionally a colon and an error message
     associated with either errno or the code parameter.

	       EXAMPLE:
		   if (open(filename, O_RDONLY) < 0)
		       xo_err(1, "cannot open file '%s'", filename);

ADDITIONAL DOCUMENTATION
     Complete documentation can be found on github:

	   http://juniper.github.io/libxo/libxo-manual.html

     libxo lives on github as:

	   https://github.com/Juniper/libxo

     The latest release of libxo is available at:

	   https://github.com/Juniper/libxo/releases

SEE ALSO
     xo_emit(3)

HISTORY
     The libxo library was added in FreeBSD 11.0.

AUTHOR
     Phil Shafer

BSD			       December 4, 2014				   BSD

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