git config --unset: remove empty sections (in the common case)

diff --git a/gettext.c b/gettext.c
index a268a2c52c0ed444b073d0411ca0dcc3f210ef51..db727ea0204aa13acea0f189ea03e59b5cdb918f 100644 (file)
--- a/gettext.c
+++ b/gettext.c
@@ -18,6 +18,8 @@
 #      endif
 #endif
 
+static const char *charset;
+
 /*
  * Guess the user's preferred languages from the value in LANGUAGE environment
  * variable and LC_MESSAGES locale category if NO_GETTEXT is not defined.
@@ -65,7 +67,6 @@ static int test_vsnprintf(const char *fmt, ...)
        return ret;
 }
 
-static const char *charset;
 static void init_gettext_charset(const char *domain)
 {
        /*
@@ -172,8 +173,27 @@ int gettext_width(const char *s)
 {
        static int is_utf8 = -1;
        if (is_utf8 == -1)
-               is_utf8 = !strcmp(charset, "UTF-8");
+               is_utf8 = is_utf8_locale();
 
        return is_utf8 ? utf8_strwidth(s) : strlen(s);
 }
 #endif
+
+int is_utf8_locale(void)
+{
+#ifdef NO_GETTEXT
+       if (!charset) {
+               const char *env = getenv("LC_ALL");
+               if (!env || !*env)
+                       env = getenv("LC_CTYPE");
+               if (!env || !*env)
+                       env = getenv("LANG");
+               if (!env)
+                       env = "";
+               if (strchr(env, '.'))
+                       env = strchr(env, '.') + 1;
+               charset = xstrdup(env);
+       }
+#endif
+       return is_encoding_utf8(charset);
+}