Fix a crash issue when empty strings are set to the BDF properties

[platform/upstream/fontconfig.git] / doc / fclangset.fncs

diff --git a/doc/fclangset.fncs b/doc/fclangset.fncs
index 0a44b38..c08d60c 100644 (file)
--- a/doc/fclangset.fncs
+++ b/doc/fclangset.fncs
@@ -154,6 +154,15 @@ has no matching language, this function returns FcLangDifferentLang.
 @@
 
 @RET@          FcStrSet *
+@FUNC@         FcGetDefaultLangs
+@TYPE1@                void
+@PURPOSE@      Get the default languages list
+@DESC@
+Returns a string set of the default languages according to the environment variables on the system.
+This function looks for them in order of FC_LANG, LC_ALL, LC_CTYPE and LANG then.
+If there are no valid values in those environment variables, "en" will be set as fallback.
+
+@RET@          FcStrSet *
 @FUNC@         FcLangSetGetLangs
 @TYPE1@                const FcLangSet *               @ARG1@          ls
 @PURPOSE@      get the list of languages in the langset
@@ -169,6 +178,14 @@ Returns a string set of all languages in <parameter>langset</parameter>.
 Returns a string set of all known languages.
 @@
 
+@RET@          FcChar8 *
+@FUNC@         FcLangNormalize
+@TYPE1@                const FcChar8 *                 @ARG1@          lang
+@PURPOSE@      Normalize the language string
+@DESC@
+Returns a string to make <parameter>lang</parameter> suitable on fontconfig.
+@@
+
 @RET@          const FcCharSet *
 @FUNC@         FcLangGetCharSet
 @TYPE1@                const FcChar8 *                 @ARG1@          lang