master a2f7b7c803 2/2: Merge branch 'master' of git.savannah.gnu.org:/srv/git/emacs

[Eli Zaretskii]

branch: master
commit a2f7b7c803494deb112acc0222e9454c5268de1f
Merge: 77bfc5ed7a 34e4eba07e
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    Merge branch 'master' of git.savannah.gnu.org:/srv/git/emacs
---
 etc/PROBLEMS | 17 +++++++++++++++++
 src/xterm.c  | 17 +++++++++++------
 2 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 4224171298..018efcf302 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -3025,6 +3025,23 @@ GTK_IM_MODULE.
 GTK does not allow programs to warp the pointer anymore.  There is
 nothing that can be done about this problem.
 
+** Certain keys such as 'C-S-u' are not reported correctly.
+
+Some keys with modifiers such as Shift and Control might not be
+reported correctly due to incorrectly written GTK input method
+modules.  This is known to happen to 'C-S-u' and 'C->', which are
+misreported as 'C-u' and '>'.
+
+To disable the use of GTK input methods, evaluate:
+
+  (pgtk-use-im-context nil)
+
+This will also cause system input methods and features such as the
+Compose key to stop working.
+
+On X Windows, users should not use Emacs configured with PGTK, since
+this and many other problems do not exist on the regular X builds.
+
 * Build-time problems
 
 ** Configuration
diff --git a/src/xterm.c b/src/xterm.c
index 4f264ab2a8..00df7dce34 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -7264,10 +7264,8 @@ x_hash_string_ignore_case (const char *string)
 /* On frame F, translate the color name to RGB values.  Use cached
    information, if possible.
 
-   Note that there is currently no way to clean old entries out of the
-   cache.  However, it is limited to names in the server's database,
-   and names we've actually looked up; list-colors-display is probably
-   the most color-intensive case we're likely to hit.  */
+   If too many entries are placed in the cache, the least recently
+   used entries are removed.  */
 
 Status
 x_parse_color (struct frame *f, const char *color_name,
@@ -7351,13 +7349,15 @@ x_parse_color (struct frame *f, const char *color_name,
   dpyinfo->color_names[idx] = cache_entry;
 
   /* Don't let the color cache become too big.  */
-  if (dpyinfo->color_names_length[idx] > 128)
+  if (dpyinfo->color_names_length[idx] > (x_color_cache_bucket_size > 0
+                                         ? x_color_cache_bucket_size : 128))
     {
       i = 0;
 
       for (last = dpyinfo->color_names[idx]; last; last = last->next)
        {
-         if (++i == 128)
+         if (++i == (x_color_cache_bucket_size > 0
+                     ? x_color_cache_bucket_size : 128))
            {
              next = last->next;
              last->next = NULL;
@@ -25941,4 +25941,9 @@ where the drop happened, ACTION is the action that was 
passed to
 `x-begin-drag', FRAME is the frame which initiated the drag-and-drop
 operation, and TIME is the X server time when the drop happened.  */);
   Vx_dnd_unsupported_drop_function = Qnil;
+
+  DEFVAR_INT ("x-color-cache-bucket-size", x_color_cache_bucket_size,
+    doc: /* Most buckets allowed per display in the internal color cache.
+Values less than 1 mean 128.  This option is for debugging only.  */);
+  x_color_cache_bucket_size = 128;
 }