Commit: patch 9.2.0627: :vim9cmd source handles all scripts as Vim9 script

[Christian Brabandt]

patch 9.2.0627: :vim9cmd source handles all scripts as Vim9 script

Commit: https://github.com/vim/vim/commit/d696d4145888d2560ab0a3607b5822a15ddb4869
Author: Doug Kearns <dougk...@gmail.com>
Date: Sat Jun 13 15:29:42 2026 +0000

patch 9.2.0627: :vim9cmd source handles all scripts as Vim9 script

Problem: Vim9: Commands modified by :vim9cmd source all scripts as Vim9
script.
Solution: Only source buffer lines as Vim9 via the :vim9cmd modifier.
When sourcing a file, respect its script type.

This caused `:vim9cmd gui` to launch the GUI without menus as the legacy
script menus.vim file failed to load when sourced as Vim9 script.

closes: #20452

Signed-off-by: Doug Kearns <dougk...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/scriptfile.c b/src/scriptfile.c
index d0735ffe4..a9b257493 100644
--- a/src/scriptfile.c
+++ b/src/scriptfile.c
@@ -1806,9 +1806,9 @@ do_source_ext(
sticky_cmdmod_flags = 0;

save_current_sctx = current_sctx;
- if (cmdmod.cmod_flags & CMOD_VIM9CMD)
- // When the ":vim9cmd" command modifier is used, source the script as a
- // Vim9 script.
+ if ((cmdmod.cmod_flags & CMOD_VIM9CMD) && cookie.source_from_buf)
+ // When the ":vim9cmd" command modifier is used, source buffer lines as
+ // Vim9 script
current_sctx.sc_version = SCRIPT_VERSION_VIM9;
else
current_sctx.sc_version = 1; // default script version
diff --git a/src/testdir/test_gui.vim b/src/testdir/test_gui.vim
index 1098e00ff..83c43b117 100644
--- a/src/testdir/test_gui.vim
+++ b/src/testdir/test_gui.vim
@@ -154,6 +154,24 @@ func Test_quoteplus()
let @+ = quoteplus_saved
endfunc

+" Test that legacy script menu files are sourced when :gui is executed with
+" the :vim9cmd modifier
+func Test_vim9cmd_gui()
+ CheckX11BasedGui
+
+ let lines =<< trim END
+ " Ignore the "failed to create input context" error.
+ call test_ignore_error("E285")
+ vim9cmd gui -f
+ call writefile([!empty(menu_info("Help"))], "XguimenuOK")
+ qa!
+ END
+ call writefile(lines, 'Xguimenuscript', 'D')
+ call system(GetVimCommand() .. ' --noplugin -S Xguimenuscript')
+ call assert_equal(['1'], readfile('XguimenuOK'))
+ call delete('XguimenuOK')
+endfunc
+
func Test_gui_read_stdin()
CheckUnix

diff --git a/src/testdir/test_source.vim b/src/testdir/test_source.vim
index b7b0d1175..7982f51f0 100644
--- a/src/testdir/test_source.vim
+++ b/src/testdir/test_source.vim
@@ -635,6 +635,22 @@ func Test_source_buffer_vim9()
%bw!
endfunc

+" Test that the modifier does not override the script type when sourcing files
+" with :vim9cmd and :legacy
+func Test_source_file_ignores_modifiers()
+ let lines = ["let g:legacy_sourced = 42"]
+ call writefile(lines, 'Xsourcelegacy', 'D')
+ vim9cmd source Xsourcelegacy
+ call assert_equal(42, g:legacy_sourced)
+ unlet g:legacy_sourced
+
+ let lines = ["vim9script", "g:vim9_sourced = 42"]
+ call writefile(lines, 'Xsourcevim9', 'D')
+ legacy source Xsourcevim9
+ call assert_equal(42, g:vim9_sourced)
+ unlet g:vim9_sourced
+endfunc
+
func Test_source_buffer_long_line()
" This was reading past the end of the line.
new
diff --git a/src/version.c b/src/version.c
index 956304845..812d66fd2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 627,
/**/
626,
/**/