(xftfont_open): Make sure that Xrender extension is added

before Xft one (Bug#1696).

1 files changed, 10 insertions, 0 deletions

diff --git a/src/xftfont.c b/src/xftfont.c
index af0feb9b7e6..4a1b488bcf9 100644
--- a/src/xftfont.c
+++ b/src/xftfont.c
@@ -274,6 +274,16 @@ xftfont_open (f, entity, pixel_size)
 
 
   BLOCK_INPUT;
+  /* Make sure that the Xrender extension is added before the Xft one.
+     Otherwise, the close-display hook set by Xft is called after the
+     one for Xrender, and the former tries to re-add the latter.  This
+     results in inconsistency of internal states and leads to X
+     protocol error when one reconnects to the same X server.
+     (Bug#1696)  */
+  {
+    int event_base, error_base;
+    XRenderQueryExtension (display, &event_base, &error_base);
+  }
   match = XftFontMatch (display, FRAME_X_SCREEN_NUMBER (f), pat, &result);
   FcPatternDestroy (pat);
   xftfont = XftFontOpenPattern (display, match);