From 9a033d7b18651acbb7eda4b7f39a27c01748fb70 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Wed, 7 Oct 2020 17:29:48 +0200
Subject: patch 8.2.1811: mapping Ctrl-key does not work for '{', '}' and '|'

Problem:    Mapping Ctrl-key does not work for '{', '}' and '|'.
Solution:   Remove the shift modifier. (closes #6457)
---
 src/misc2.c                    |  8 +++++++-
 src/testdir/test_termcodes.vim | 18 ++++++++++++++++++
 src/version.c                  |  2 ++
 3 files changed, 27 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/misc2.c b/src/misc2.c
index b69714a8da..6316b53df4 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -2974,7 +2974,8 @@ may_adjust_key_for_ctrl(int modifiers, int key)
 
 /*
  * Some keys already have Shift included, pass them as normal keys.
- * Not when Ctrl is also used, because <C-H> and <C-S-H> are different.
+ * When Ctrl is also used <C-H> and <C-S-H> are different, but <C-S-{> should
+ * be <C-{>.  Same for <C-S-}> and <C-S-|>.
  * Also for <A-S-a> and <M-S-a>.
  * This includes all printable ASCII characters except numbers and a-z.
  */
@@ -2989,6 +2990,11 @@ may_remove_shift_modifier(int modifiers, int key)
 		|| (key >= '[' && key <= '`')
 		|| (key >= '{' && key <= '~')))
 	return modifiers & ~MOD_MASK_SHIFT;
+
+    if (modifiers == (MOD_MASK_SHIFT | MOD_MASK_CTRL)
+		&& (key == '{' || key == '}' || key == '|'))
+	return modifiers & ~MOD_MASK_SHIFT;
+
     return modifiers;
 }
 
diff --git a/src/testdir/test_termcodes.vim b/src/testdir/test_termcodes.vim
index 7d7e2f0987..424e285ef1 100644
--- a/src/testdir/test_termcodes.vim
+++ b/src/testdir/test_termcodes.vim
@@ -2126,6 +2126,24 @@ endfunc
 func Test_mapping_works_with_shift_ctrl()
   call RunTest_mapping_works_with_mods(function('GetEscCodeCSI27'), 'C-S', 6)
   call RunTest_mapping_works_with_mods(function('GetEscCodeCSIu'), 'C-S', 6)
+
+  new
+  set timeoutlen=10
+
+  " Ctrl-Shift-[ actually produces CTRL-Shift-{ which is mapped as <C-{>
+  call RunTest_mapping_mods('<C-{>', '{', function('GetEscCodeCSI27'), 6)
+  call RunTest_mapping_mods('<C-{>', '{', function('GetEscCodeCSIu'), 6)
+
+  " Ctrl-Shift-] actually produces CTRL-Shift-} which is mapped as <C-}>
+  call RunTest_mapping_mods('<C-{>', '{', function('GetEscCodeCSI27'), 6)
+  call RunTest_mapping_mods('<C-{>', '{', function('GetEscCodeCSIu'), 6)
+
+  " Ctrl-Shift-\ actually produces CTRL-Shift-| which is mapped as <C-|>
+  call RunTest_mapping_mods('<C-\|>', '|', function('GetEscCodeCSI27'), 6)
+  call RunTest_mapping_mods('<C-\|>', '|', function('GetEscCodeCSIu'), 6)
+
+  bwipe!
+  set timeoutlen&
 endfunc
 
 " Below we also test the "u" code with Alt, This works, but libvterm would not
diff --git a/src/version.c b/src/version.c
index 140b3c8e20..a2929bc3f7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1811,
 /**/
     1810,
 /**/
-- 
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