.\" #
.\" # Copyright (c) 2014, Juniper Networks, Inc.
.\" # All rights reserved.
.\" # This SOFTWARE is licensed under the LICENSE provided in the
.\" # ../Copyright file. By downloading, installing, copying, or 
.\" # using the SOFTWARE, you agree to be bound by the terms of that
.\" # LICENSE.
.\" # Phil Shafer, July 2014
.\" 
.Dd December 4, 2014
.Dt LIBXO 3
.Os
.Sh NAME
.Nm xo_error
.Nd generate simple error messages in multiple output styles
.Sh LIBRARY
.Lb libxo
.Sh SYNOPSIS
.In libxo/xo.h
.Ft void
.Fn xo_error "const char *fmt" "..."
.Sh DESCRIPTION
Use the
.Fn xo_error
function to generate error messages to standard error.
The 
.Fa fmt
argument is a string containing printf-style formatting
instructions that describe the remaining arguments.
.Pp
When converting an application to
.Nm libxo ,
one can replace
.Em "fprintf(stderr,...)"
calls with
.Fn xo_error
calls.
.Sh SEE ALSO
.Xr printf 3 ,
.Xr xo_emit 3 ,
.Xr libxo 3
.Sh HISTORY
The
.Nm libxo
library first appeared in
.Fx 11.0 .
.Sh AUTHORS
.Nm libxo
was written by
.An Phil Shafer Aq Mt phil@freebsd.org .