[vim/vim] Scroll the cmdline completion info popup with the mouse wheel (PR #20418)

h_east

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Jun 3, 2026, 1:10:03 AM (yesterday) Jun 3

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Problem:  In command-line completion with a popup menu ('wildoptions'
          contains "pum"), the info popup shown next to the menu could
          not be scrolled, unlike the Insert mode completion info popup
          which scrolls with the mouse wheel.
Solution: When the mouse pointer is on top of the info popup, scroll it
          with the mouse wheel in command-line mode as well, without
          closing the completion popup menu.

fixes: #20146

You can view, comment on, or merge this pull request online at:

https://github.com/vim/vim/pull/20418

Commit Summary

531d4ab Scroll the cmdline completion info popup with the mouse wheel

File Changes

(5 files)

Patch Links:

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Christian Brabandt

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Jun 3, 2026, 2:32:54 PM (yesterday) Jun 3

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chrisbra left a comment (vim/vim#20418)

thanks

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Christian Brabandt

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Jun 3, 2026, 2:49:42 PM (yesterday) Jun 3

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chrisbra left a comment (vim/vim#20418)

Hm, does the test depend on the geometry of the vim window / terminal size?
It fails for me consistently in my terminal window, unless I set set columns=81 lines=24:

diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index ec92560fa..67785eb79 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -4773,6 +4773,8 @@ endfunc
 func Test_wildmenu_pum_info_mouse_scroll()
   CheckFeature quickfix
   CheckFeature mouse
+  let [_columns, _lines] = [&columns, &lines]
+  set columns=81 lines=24

   func DictComp(A, L, P)
     let info = join(map(range(1, 30), '"info line " .. v:val'), "\n")
@@ -4816,6 +4818,7 @@ func Test_wildmenu_pum_info_mouse_scroll()
   delfunc PrepMouse
   unlet g:fl
   set wildmenu& wildoptions& completeopt& mouse&
+  let [&columns, &lines] = [_columns, _lines]
 endfunc

 func Test_cmdline_complete_findfunc_dict()

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h_east

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Jun 3, 2026, 11:19:50 PM (16 hours ago) Jun 3

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h-east left a comment (vim/vim#20418)

I have updated the newly added test to use screendumps instead.

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