commit 453dfbf7d668061b44d39d3aee6d372c4d3c31cf
parent 4a4de73043060a4c0f8e91bc69ff62c69fcd8702
Author: zeertzjq <zeertzjq@outlook.com>
Date: Sat, 28 Feb 2026 06:59:08 +0800
vim-patch:9.1.0535: newline escape wrong in ex mode
Problem: newline escape wrong in ex mode (Konrad Schwarz)
Solution: partly revert patch 7.3.014, remove backslash in front of a
newline when not in prompt mode in ex line mode
(Mohamed Akram)
This fixes newline escaping to allow passing multiple commands to
":global", multiple lines to shell commands, and ending lines in append
mode with backslashes. This should fix a POSIX/(traditional) VI
incompatiblity.
This reverts a previous incorrect attempt at patch v7.3.014 to fix
append mode which removed half of trailing backslashes which lead to,
eg. the following two commands being parsed as having a different number
of backslashes:
```
!echo foo\\\
```
```
!echo foo\\ \
```
fixes: vim/vim#6135
fixes: vim/vim#7244
closes: vim/vim#15120
https://github.com/vim/vim/commit/f3daa4525b1816e475fbfe7add6f3c4a33b13944
Co-authored-by: Mohamed Akram <mohd.akram@outlook.com>
Diffstat:
2 files changed, 47 insertions(+), 18 deletions(-)
diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
@@ -2341,12 +2341,7 @@ static char *do_one_cmd(char **cmdlinep, int flags, cstack_T *cstack, LineGetter
// Also do this for ":read !cmd", ":write !cmd" and ":global".
// Any others?
for (char *s = ea.arg; *s; s++) {
- // Remove one backslash before a newline, so that it's possible to
- // pass a newline to the shell and also a newline that is preceded
- // with a backslash. This makes it impossible to end a shell
- // command in a backslash, but that doesn't appear useful.
- // Halving the number of backslashes is incompatible with previous
- // versions.
+ // Remove one backslash before a newline.
if (*s == '\\' && s[1] == '\n') {
STRMOVE(s, s + 1);
} else if (*s == '\n') {
diff --git a/test/old/testdir/test_ex_mode.vim b/test/old/testdir/test_ex_mode.vim
@@ -174,6 +174,39 @@ func Test_Ex_global()
call assert_equal('bax', getline(3))
call assert_equal('bay', getline(5))
bwipe!
+
+ throw 'Skipped: Nvim only supports Vim Ex mode'
+ new
+ call setline(1, ['foo', 'bar'])
+ call feedkeys("Qg/./i\\\na\\\n.\\\na\\\nb\\\n.", "xt")
+ call assert_equal(['a', 'b', 'foo', 'a', 'b', 'bar'], getline(1, '$'))
+ bwipe!
+endfunc
+
+func Test_Ex_shell()
+ throw 'Skipped: Nvim only supports Vim Ex mode'
+ CheckUnix
+
+ new
+ call feedkeys("Qr !echo foo\\\necho bar\n", 'xt')
+ call assert_equal(['', 'foo', 'bar'], getline(1, '$'))
+ bwipe!
+
+ new
+ call feedkeys("Qr !echo foo\\\\\nbar\n", 'xt')
+ call assert_equal(['', 'foobar'], getline(1, '$'))
+ bwipe!
+
+ new
+ call feedkeys("Qr !echo foo\\ \\\necho bar\n", 'xt')
+ call assert_equal(['', 'foo ', 'bar'], getline(1, '$'))
+ bwipe!
+
+ new
+ call setline(1, ['bar', 'baz'])
+ call feedkeys("Qg/./!echo \\\ns/b/c/", "xt")
+ call assert_equal(['car', 'caz'], getline(1, '$'))
+ bwipe!
endfunc
" Test for pressing Ctrl-C in :append inside a loop in Ex mode
@@ -214,19 +247,11 @@ func Test_Ex_append()
call feedkeys("Qappend!\npqr\nxyz\n.\nvisual\n", 'xt')
call assert_equal(["\t abc", "\t pqr", "\t xyz"], getline(1, '$'))
close!
-endfunc
-" In Ex-mode, backslashes at the end of a command should be halved.
-func Test_Ex_echo_backslash()
- throw 'Skipped: Nvim only supports Vim Ex mode'
- " This test works only when the language is English
- CheckEnglish
- let bsl = '\\\\'
- let bsl2 = '\\\'
- call assert_fails('call feedkeys("Qecho " .. bsl .. "\nvisual\n", "xt")',
- \ 'E15: Invalid expression: "\\"')
- call assert_fails('call feedkeys("Qecho " .. bsl2 .. "\nm\nvisual\n", "xt")',
- \ "E15: Invalid expression: \"\\\nm\"")
+ new
+ call feedkeys("Qappend\na\\\n.", 'xt')
+ call assert_equal(['a\'], getline(1, '$'))
+ close!
endfunc
func Test_ex_mode_errors()
@@ -325,6 +350,15 @@ func Test_empty_command_visual_mode()
call delete('Xexmodescript')
endfunc
+" Test using backslash in ex-mode
+func Test_backslash_multiline()
+ throw 'Skipped: Nvim only supports Vim Ex mode'
+ new
+ call setline(1, 'enum')
+ call feedkeys('Qg/enum/i\\.', "xt")
+ call assert_equal(["", "enum"], getline(1, 2))
+endfunc
+
" Testing implicit print command
func Test_implicit_print()
new
