Ignore user language settings that aren't listed in language config; we'll then fall back to current autodetection. This prevents the surprises where your profile suddenly switches to Arabic because it was selected by default due to lack of a match in the drop-down box.

1 files changed, 10 insertions, 2 deletions

diff --git a/lib/util.php b/lib/util.php
index 99a0a1db3..5d20ed82d 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -91,8 +91,16 @@ function common_language()
     if (_have_config() && common_logged_in()) {
         $user = common_current_user();
         $user_language = $user->language;
-        if ($user_language)
-          return $user_language;
+
+        if ($user->language) {
+            // Validate -- we don't want to end up with a bogus code
+            // left over from some old junk.
+            foreach (common_config('site', 'languages') as $code => $info) {
+                if ($info['lang'] == $user_language) {
+                    return $user_language;
+                }
+            }
+        }
     }
 
     // Otherwise, find the best match for the languages requested by the