.\" This manpage has been automatically generated by docbook2man 
.\" from a DocBook document.  This tool can be found at:
.\" <http://shell.ipoline.com/~elmert/comp/docbook2X/> 
.\" Please send any bug reports, improvements, comments, patches, 
.\" etc. to Steve Cheng <steve@ggi-project.org>.
.TH "FcCharSetMerge" "3" "2022/03/31" "Fontconfig 2.14.0" ""

.SH NAME
FcCharSetMerge \- Merge charsets
.SH SYNOPSIS
.sp
\fB#include <fontconfig/fontconfig.h>
.sp
FcBool FcCharSetMerge (FcCharSet *\fIa\fB, const FcCharSet *\fIb\fB, FcBool *\fIchanged\fB);
\fR
.SH "DESCRIPTION"
.PP
Adds all chars in \fIb\fR to \fIa\fR\&.
In other words, this is an in-place version of FcCharSetUnion.
If \fIchanged\fR is not NULL, then it returns whether any new
chars from \fIb\fR were added to \fIa\fR\&.
Returns FcFalse on failure, either when \fIa\fR is a constant
set or from running out of memory.