From d230cf144f84c8a50b932c8b89daa55c1a3620d8 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 7 Jan 2009 20:15:20 -0500
Subject: [PATCH] Make FcCharSetMerge() public

That's needed for apps to be abled to do pruning themselves without
the performance penalty of recreating new charsets all the time.
---
 doc/fccharset.fncs      | 13 +++++++++++++
 fontconfig/fontconfig.h |  3 +++
 src/fcint.h             |  3 ---
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/doc/fccharset.fncs b/doc/fccharset.fncs
index f4c7d32..93e1f5c 100644
--- a/doc/fccharset.fncs
+++ b/doc/fccharset.fncs
@@ -98,6 +98,19 @@ Returns a set including only those chars found in either <parameter>a</parameter
 Returns a set including only those chars found in <parameter>a</parameter> but not <parameter>b</parameter>. 
 @@
 
+@RET@		FcCharSet *
+@FUNC@		FcCharSetMerge
+@TYPE1@		const FcCharSet *	@ARG1@		a
+@TYPE2@		const FcCharSet *	@ARG2@		b
+@PURPOSE@	Merge charsets
+@DESC@
+If <parameter>a</parameter> is NULL, returns a copy of <parameter>b</parameter>.
+If <parameter>a</parameter> is an FcCharSet object owned by fontconfig that
+cannot be modified, it returns the union of <parameter>a</parameter> and
+<parameter>b</parameter> in a newly-created FcCharSet object.
+Otherwise, adds all chars in <parameter>b</parameter> to <parameter>a</parameter> and returns <parameter>a</parameter>.  In other words, this is an in-place versionof FcCharSetUnion.
+@@
+
 @RET@		FcBool 
 @FUNC@		FcCharSetHasChar
 @TYPE1@		const FcCharSet *	@ARG1@		fcs
diff --git a/fontconfig/fontconfig.h b/fontconfig/fontconfig.h
index 529456f..606580d 100644
--- a/fontconfig/fontconfig.h
+++ b/fontconfig/fontconfig.h
@@ -439,6 +439,9 @@ FcCharSetUnion (const FcCharSet *a, const FcCharSet *b);
 FcPublic FcCharSet*
 FcCharSetSubtract (const FcCharSet *a, const FcCharSet *b);
 
+FcPublic FcCharSet *
+FcCharSetMerge (FcCharSet *a, const FcCharSet *b);
+
 FcPublic FcBool
 FcCharSetHasChar (const FcCharSet *fcs, FcChar32 ucs4);
 
diff --git a/src/fcint.h b/src/fcint.h
index c8ff228..0b41d59 100644
--- a/src/fcint.h
+++ b/src/fcint.h
@@ -653,9 +653,6 @@ FcNameUnparseValueList (FcStrBuf	*buf,
 FcPrivate FcCharLeaf *
 FcCharSetFindLeafCreate (FcCharSet *fcs, FcChar32 ucs4);
 
-FcPrivate FcCharSet *
-FcCharSetMerge (FcCharSet *a, const FcCharSet *b);
-
 FcPrivate FcBool
 FcCharSetSerializeAlloc(FcSerialize *serialize, const FcCharSet *cs);
 
-- 
2.39.5