doc/fontconfig-devel/fccharsetmerge.html

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>FcCharSetMerge</H1
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><H2
>Name</H2
>FcCharSetMerge&nbsp;--&nbsp;Merge charsets</DIV
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><PRE
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>#include &#60;fontconfig/fontconfig.h&#62;
	</PRE
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><CODE
><CODE
CLASS="FUNCDEF"
>FcBool <TT
CLASS="FUNCTION"
>FcCharSetMerge</TT
></CODE
>(FcCharSet *<TT
CLASS="PARAMETER"
><I
>a</I
></TT
>, const FcCharSet *<TT
CLASS="PARAMETER"
><I
>b</I
></TT
>, FcBool *<TT
CLASS="PARAMETER"
><I
>changed</I
></TT
>);</CODE
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><H2
>Description</H2
><P
>Adds all chars in <TT
CLASS="PARAMETER"
><I
>b</I
></TT
> to <TT
CLASS="PARAMETER"
><I
>a</I
></TT
>.
In other words, this is an in-place version of FcCharSetUnion.
If <TT
CLASS="PARAMETER"
><I
>changed</I
></TT
> is not NULL, then it returns whether any new
chars from <TT
CLASS="PARAMETER"
><I
>b</I
></TT
> were added to <TT
CLASS="PARAMETER"
><I
>a</I
></TT
>.
Returns FcFalse on failure, either when <TT
CLASS="PARAMETER"
><I
>a</I
></TT
> is a constant
set or from running out of memory.
	    </P
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><H2
>Version</H2
><P
>Fontconfig version 2.10.93

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