Commit: patch 9.2.0425: Cannot silence undo/redo messages

[Christian Brabandt]

patch 9.2.0425: Cannot silence undo/redo messages

Commit: https://github.com/vim/vim/commit/d25f8d1b2c6e0cbd390a36884c95edc88f1b3d69
Author: Shougo Matsushita <Shougo...@gmail.com>
Date: Fri May 1 14:54:56 2026 +0000

patch 9.2.0425: Cannot silence undo/redo messages

Problem: Cannot silence undo/redo messages
Solution: Add "u" flag to 'shortmess' option
(Shougo Matsushita).

fixes: #20049
closes: #20107

Signed-off-by: Shougo Matsushita <Shougo...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 3576e174b..d9dbcd833 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt* For Vim version 9.2. Last change: 2026 Apr 29
+*options.txt* For Vim version 9.2. Last change: 2026 May 01


VIM REFERENCE MANUAL by Bram Moolenaar
@@ -8044,6 +8044,9 @@ A jump table for the options with a short description can be found at |Q_op|.
search count statistics. The maximum limit can be set with
the 'maxsearchcount' option, see also |searchcount()|
function.
+ u don't give undo and redo messages like *shm-u*
+ "1 line less; before #1 1 second ago", "Already at oldest
+ change" or "Already at newest change"

This gives you the opportunity to avoid that a change between buffers
requires you to hit <Enter>, but still gives as useful a message as
diff --git a/runtime/doc/tags b/runtime/doc/tags
index 3bc6f7155..4ad699ed5 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -10331,6 +10331,7 @@ shm-q options.txt /*shm-q*
shm-r options.txt /*shm-r*
shm-s options.txt /*shm-s*
shm-t options.txt /*shm-t*
+shm-u options.txt /*shm-u*
shm-w options.txt /*shm-w*
shm-x options.txt /*shm-x*
short-name-changed version4.txt /*short-name-changed*
diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 9516ecd12..ca69850e0 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -1,4 +1,4 @@
-*version9.txt* For Vim version 9.2. Last change: 2026 Apr 29
+*version9.txt* For Vim version 9.2. Last change: 2026 May 01


VIM REFERENCE MANUAL by Bram Moolenaar
@@ -52621,6 +52621,7 @@ Other ~
- Added the "noinsert" value to the 'wildmode' option for symmetry with the
'completeopt' option
- Channel can handle |Blob| messages |channel-open-options|.
+- Added the "u" flag to 'shortmess' to silence undo/redo messages: |shm-u|

Platform specific ~
-----------------
diff --git a/src/option.h b/src/option.h
index cda49a4af..a4359a259 100644
--- a/src/option.h
+++ b/src/option.h
@@ -277,8 +277,9 @@ typedef enum {
#define SHM_RECORDING 'q' // short recording message
#define SHM_FILEINFO 'F' // no file info messages
#define SHM_SEARCHCOUNT 'S' // no search stats: '[1/10]'
+#define SHM_UNDO 'u' // undo messages
#define SHM_POSIX "AS" // POSIX value
-#define SHM_ALL "rmfixlnwaWtToOsAIcCqFS" // all possible flags for 'shm'
+#define SHM_ALL "rmfixlnwaWtToOsAIcCqFSu" // all possible flags for 'shm'
#define SHM_LEN 30 // max length of all flags together
// plus a NUL character

diff --git a/src/testdir/test_messages.vim b/src/testdir/test_messages.vim
index 80996cfad..2e5a16e4b 100644
--- a/src/testdir/test_messages.vim
+++ b/src/testdir/test_messages.vim
@@ -837,4 +837,69 @@ func Test_fileinfo_after_last_bd()
call StopVimInTerminal(buf)
endfunc

+func Test_undo_messages()
+ new
+
+ " Normal undo/redo messages
+ redir => result
+ call setline(1, 'foo')
+ undo
+ undo
+ redo
+ redo
+ redir END
+ let msg_list = split(result, "
")
+ call assert_match("^1 line less; before #1", msg_list[0])
+ call assert_equal("Already at oldest change", msg_list[1])
+ call assert_match("^1 more line; after #1", msg_list[2])
+ call assert_equal("Already at newest change", msg_list[3])
+
+ " Ignore undo/redo messages
+ redir => result
+ set shortmess+=u
+ call setline(1, 'foo')
+ undo
+ undo
+ redo
+ redo
+ redir END
+ let msg_list = split(result, "
")
+ call assert_equal([], msg_list)
+ set shortmess&
+
+ " undo_time() path: :earlier and :later go through a separate
+ " message site than u_doit(); make sure SHM_UNDO suppresses it too.
+ enew!
+ call setline(1, 'a')
+ call setline(1, 'b')
+ call setline(1, 'c')
+
+ redir => result
+ earlier 1
+ earlier 999
+ earlier 999
+ later 1
+ later 999
+ redir END
+ let msg_list = split(result, "
")
+ call assert_match('^1 line less; before #', msg_list[0])
+ call assert_match('^1 changes; before #', msg_list[1])
+ call assert_match('^1 changes; before #', msg_list[2])
+ call assert_match('^1 more line; after #', msg_list[3])
+ call assert_equal('Already at newest change', msg_list[4])
+
+ set shortmess+=u
+ redir => result
+ earlier 1
+ earlier 999
+ later 1
+ later 999
+ later 999
+ redir END
+ call assert_equal([], split(result, "
"))
+
+ set shortmess&
+ bwipe!
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/undo.c b/src/undo.c
index 170eaac47..ac38a8bf2 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -2262,7 +2262,8 @@ u_doit(int startcount)
beep_flush();
if (count == startcount - 1)
{
- msg(_("Already at oldest change"));
+ if (!shortmess(SHM_UNDO))
+ msg(_("Already at oldest change"));
return;
}
break;
@@ -2277,7 +2278,8 @@ u_doit(int startcount)
beep_flush(); // nothing to redo
if (count == startcount - 1)
{
- msg(_("Already at newest change"));
+ if (!shortmess(SHM_UNDO))
+ msg(_("Already at newest change"));
return;
}
break;
@@ -2530,10 +2532,13 @@ undo_time(

if (closest == closest_start)
{
- if (step < 0)
- msg(_("Already at oldest change"));
- else
- msg(_("Already at newest change"));
+ if (!shortmess(SHM_UNDO))
+ {
+ if (step < 0)
+ msg(_("Already at oldest change"));
+ else
+ msg(_("Already at newest change"));
+ }
return;
}

@@ -2996,7 +3001,8 @@ u_undo_end(
#endif

if (global_busy // no messages now, wait until global is finished
- || !messaging()) // 'lazyredraw' set, don't do messages now
+ || !messaging() // 'lazyredraw' set, don't do messages now
+ || shortmess(SHM_UNDO))
return;

if (curbuf->b_ml.ml_flags & ML_EMPTY)
diff --git a/src/version.c b/src/version.c
index 837b453d1..410866579 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 425,
/**/
424,
/**/