[mutter] theme: Allow disabling fallback colors in gtk:custom()

[Florian MÃllner <fmuellner src gnome org>]

commit a48568586723fa053b226558bdbb44962e1b05b7
Author: Florian MÃllner <fmuellner gnome org>
Date:   Sun Aug 7 18:55:30 2011 +0200

    theme: Allow disabling fallback colors in gtk:custom()
    
    gtk:custom() requires a fallback color in case the GTK+ theme in use
    does not define the desired color. As in general the fallback color
    will approximate the intended color, there is the risk of typos going
    unnoticed. To make catching these kind of errors easier, allow to ignore
    the fallback color specified (and fall back to a nice shade of pink
    instead) by setting an environment variable.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=656112

 src/ui/theme.c |   24 ++++++++++++++++++++----
 1 files changed, 20 insertions(+), 4 deletions(-)
---
diff --git a/src/ui/theme.c b/src/ui/theme.c
index 8e6f521..d240ef7 100644
--- a/src/ui/theme.c
+++ b/src/ui/theme.c
@@ -1195,8 +1195,15 @@ meta_color_spec_new_from_string (const char *str,
       str[8] == 'o' && str[9] == 'm')
     {
       const char *color_name_start, *fallback_str_start, *end;
-      char *color_name, *fallback_str;
+      char *color_name;
       MetaColorSpec *fallback = NULL;
+      static gboolean debug, debug_set = FALSE;
+
+      if (!debug_set)
+        {
+          debug = g_getenv ("MUTTER_DISABLE_FALLBACK_COLOR") != NULL;
+          debug_set = TRUE;
+        }
 
       if (str[10] != '(')
         {
@@ -1237,9 +1244,18 @@ meta_color_spec_new_from_string (const char *str,
           return NULL;
         }
 
-      fallback_str = g_strndup (fallback_str_start, end - fallback_str_start);
-      fallback = meta_color_spec_new_from_string (fallback_str, err);
-      g_free (fallback_str);
+      if (!debug)
+        {
+          char *fallback_str;
+          fallback_str = g_strndup (fallback_str_start,
+                                    end - fallback_str_start);
+          fallback = meta_color_spec_new_from_string (fallback_str, err);
+          g_free (fallback_str);
+        }
+      else
+        {
+          fallback = meta_color_spec_new_from_string ("pink", err);
+        }
 
       if (fallback == NULL)
         return NULL;