Check for localized settings by hand in xdg-settings if kreadconfig fails....

third_party/xdg-utils/scripts/xdg-settings.in

 #!/bin/sh
 #---------------------------------------------
 #   xdg-settings
 #
 #   Utility script to get various settings from the desktop environment.
 #
 #   Refer to the usage() function below for usage.
 #
 #   Copyright 2009, Google Inc.
 #
@@ skipping 127 matching lines @@
 {
     echo "$browser" | grep -q '^!'
     if [ $? -ne 0 ]; then
         echo "$browser"
     else
         binary="${browser#!}"
         parse_binary_or_desktop
     fi
 }
 
+read_kde_browser()
+{
+    browser="`kreadconfig --file kdeglobals --group General --key BrowserApplication`"
+    if [ "$browser" ]; then
+        echo "$browser"
+    fi
+    # kreadconfig in KDE 4 may not notice Key[$*]=... localized settings, so check
+    # by hand if it didn't find anything (oddly kwriteconfig works fine though)
+    kdeglobals="$HOME/.kde/share/config/kdeglobals"
+    [ ! -f "$kdeglobals" ] && return
+    # This will only take the first value if there is more than one
+    grep '^BrowserApplication\[$[^]=]*\]=' "$kdeglobals" | head -n 1 | cut -d= -f 2-
+}
+
 get_browser_kde()
 {
-    browser="`kreadconfig --file kdeglobals --group General --key BrowserApplication`"
+    browser="`read_kde_browser`"
     if [ x"$browser" = x ]; then
         # No explicit default browser; KDE will use the MIME type text/html
         get_browser_mime
     else
         resolve_kde_browser
     fi
 }
 
 check_browser_kde()
 {
-    browser="`kreadconfig --file kdeglobals --group General --key BrowserApplication`"
+    browser="`read_kde_browser`"
     browser="`resolve_kde_browser`"
     # Because KDE will use the handler for MIME type text/html if this value
     # is empty, we allow either the empty string or a match to $1 here
     if [ x"$browser" != x -a x"$browser" != x"$1" ]; then
         echo no
         exit_success
     fi
     browser="`get_browser_mime`"
     if [ x"$browser" != x"$1" ]; then
         echo no
@@ skipping 314 matching lines @@
     ;;
 
     generic)
     dispatch_generic "$@"
     ;;
 
     *)
     exit_failure_operation_impossible "unknown desktop environment"
     ;;
 esac