Ming Hua wrote:
I agree that maybe scim is not the only culprit, I'll keep testing with
/FronEnd/X11/Dynamic set to false. Based on the current information, maybe
it is reasonable to reassign this bug to libX11.
Yes, I do suspect this is a libX11 bug (since Redhat people say so), but
as there aren't many people familiar with both input methods and X
(evident by the fact the X.org upstream bug has been silent for quite a
while), I want to find out the exact procedure to reproduce this bug
before reassign/clone this bug to libX11.
Following this lead, I grabbed the patch from
https://bugs.freedesktop.org/show_bug.cgi?id=7869
and applied to the experimental version of libX11 whose unpatched
version is still confirmed susceptible. After the patched libX11
compiled and installed, all the malfunctions are gone now! I believe
this can be treated as a confirmation of libX11's culpability. The patch
is attached, and please reassign/clone this bug to libX11.
--- libX11-1.1.3/modules/im/ximcp/imDefLkup.c.bug-201284 2006-10-30 23:58:41.000000000 -0500
+++ libX11-1.1.3/modules/im/ximcp/imDefLkup.c 2006-10-30 23:58:41.000000000 -0500
@@ -216,8 +216,13 @@
Xic ic,
BITMASK16 mode)
{
- if (mode & XimSYNCHRONUS) /* SYNC Request */
- MARK_NEED_SYNC_REPLY(ic);
+ if (mode & XimSYNCHRONUS) /* SYNC Request */ {
+ if (IS_FOCUSED(ic))
+ MARK_NEED_SYNC_REPLY(ic);
+ else
+ _XimProcSyncReply(ic->core.im, ic);
+ }
+
return True;
}
--- libX11-1.1.3/modules/im/ximcp/imDefIc.c.bug-201284 2006-06-22 17:22:22.000000000 -0400
+++ libX11-1.1.3/modules/im/ximcp/imDefIc.c 2006-10-30 23:58:41.000000000 -0500
@@ -949,6 +949,8 @@
(void)_XimWrite(im, len, (XPointer)buf);
_XimFlush(im);
+ MARK_FOCUSED(ic);
+
_XimRegisterFilter(ic);
return;
}
@@ -994,6 +996,8 @@
(void)_XimWrite(im, len, (XPointer)buf);
_XimFlush(im);
+ UNMARK_FOCUSED(ic);
+
_XimUnregisterFilter(ic);
return;
}
--- libX11-1.1.3/src/xlibi18n/XimintP.h.bug-201284 2006-06-22 17:22:23.000000000 -0400
+++ libX11-1.1.3/src/xlibi18n/XimintP.h 2006-10-31 00:01:30.000000000 -0500
@@ -244,6 +244,7 @@
#define IC_CONNECTED (1L)
#define FABLICATED (1L << 1)
#define NEED_SYNC_REPLY (1L << 2)
+#define FOCUSED (1L << 3)
/*
* macro for the flag of XICPrivateRec
@@ -269,6 +270,13 @@
#define UNMARK_NEED_SYNC_REPLY(ic) \
(((Xic)ic)->private.proto.flag &= ~NEED_SYNC_REPLY)
+#define IS_FOCUSED(ic) \
+ (((Xic)ic)->private.proto.flag & FOCUSED)
+#define MARK_FOCUSED(ic) \
+ (((Xic)ic)->private.proto.flag |= FOCUSED)
+#define UNMARK_FOCUSED(ic) \
+ (((Xic)ic)->private.proto.flag &= ~FOCUSED)
+
/*
* macro for the filter_event_mask of XICPrivateRec
*/
