commit c255b789653120979eacdf8bb8eca02487753a8e
author Bram Moolenaar <Bram@vim.org> Sat Nov 26 19:16:48 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Sat Nov 26 19:16:48 2022 +0000
tree 50a07d7bcbac6a0331c47ed4da72f137cdb5b2e5
parent 837ca8f43b9d6b8574a2bfdae219b17c84411730

patch 9.0.0954: cannot detect whether modifyOtherKeys is enabled

Problem:    Cannot detect whether modifyOtherKeys is enabled.
Solution:   Use XTQMODKEYS introduced by xterm version 377 to request the
            modifyOtherKeys level.  Update the keycode check results.

src/getchar.c

diff --git a/src/getchar.c b/src/getchar.c
index 1e03b86..142e394 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -2463,7 +2463,11 @@
     static int
 key_protocol_enabled(void)
 {
-    return seenModifyOtherKeys || kitty_protocol_state == KKPS_ENABLED;
+    // If xterm has responded to XTQMODKEYS it overrules seenModifyOtherKeys.
+    int using_mok = modify_otherkeys_state != MOKS_INITIAL
+			? modify_otherkeys_state == MOKS_ENABLED
+			: seenModifyOtherKeys;
+    return using_mok || kitty_protocol_state == KKPS_ENABLED;
 }
 
 /*