[vim/vim] Add VertSplitNC highlight group and improve vsep rendering (PR #19951)

h_east

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Apr 10, 2026, 9:38:57 PM (2 days ago) Apr 10

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Add VertSplitNC highlight group for vertical separators of non-current windows, similar to StatusLine/StatusLineNC distinction. The separator adjacent to the current window uses VertSplit, others use VertSplitNC. Default: linked to StatusLineNC for visual consistency.

At the current window's status line rows, the separator column uses the StatusLine fillchar so the status line extends seamlessly. All other rows use the vsep character with VertSplit or VertSplitNC highlight.

Also:

:redrawstatus[!] now also redraws vertical separators.
statusline height changes trigger vsep redraw.

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

https://github.com/vim/vim/pull/19951

Commit Summary

a681a25 Add VertSplitNC highlight group and improve vsep rendering

File Changes

(24 files)

M runtime/doc/options.txt (5)
M runtime/doc/syntax.txt (9)
M runtime/doc/tags (1)
M src/drawscreen.c (39)
M src/ex_docmd.c (1)
M src/globals.h (1)
M src/highlight.c (1)
M src/optiondefs.h (2)
M src/proto/screen.pro (2)
M src/screen.c (65)
A src/testdir/dumps/Test_VertSplitNC_1.dump (12)
A src/testdir/dumps/Test_VertSplitNC_2.dump (12)
A src/testdir/dumps/Test_VertSplitNC_3.dump (12)
A src/testdir/dumps/Test_VertSplitNC_stl_1.dump (20)
A src/testdir/dumps/Test_VertSplitNC_stl_2.dump (20)
A src/testdir/dumps/Test_VertSplitNC_stl_3.dump (20)
M src/testdir/dumps/Test_winhighlight_14.dump (2)
M src/testdir/dumps/Test_winhighlight_15.dump (2)
M src/testdir/dumps/Test_winhighlight_2.dump (2)
M src/testdir/dumps/Test_winhighlight_6.dump (2)
M src/testdir/dumps/Test_winhighlight_hlsearch_2.dump (2)
M src/testdir/test_highlight.vim (78)
M src/vim.h (3)
M src/window.c (10)

Patch Links:

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h_east

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Apr 10, 2026, 9:51:02 PM (2 days ago) Apr 10

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h-east left a comment (vim/vim#19951)

$ vim --clean --cmd "lang C" --cmd "colorscheme torte" +"hi! link VertSplit StatusLine" +"set ls=2" +sp +sp +"wincmd w" +vsp +vsp +"wincmd t" main.c

image.png (view on web)

:wincmd w

image.png (view on web)

:wincmd w

image.png (view on web)

:wincmd w

image.png (view on web)

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h_east

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Apr 11, 2026, 8:05:52 AM (17 hours ago) Apr 11

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@h-east pushed 1 commit.

3fa06fc Add VertSplitNC highlight group and improve vsep rendering

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h_east

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Apr 11, 2026, 10:02:48 AM (15 hours ago) Apr 11

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@h-east pushed 1 commit.

69d6dd2 Fix CI error

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h_east

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Apr 11, 2026, 12:01:10 PM (13 hours ago) Apr 11

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@h-east pushed 1 commit.

c254f0a Fix CI error

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h_east

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Apr 11, 2026, 12:27:15 PM (12 hours ago) Apr 11

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@h-east pushed 1 commit.

3511cea Fix CI error

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h_east

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Apr 11, 2026, 12:47:57 PM (12 hours ago) Apr 11

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@h-east pushed 1 commit.

8b6a7be Fix CI error

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h_east

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12:03 AM (1 hour ago) 12:03 AM

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@h-east pushed 2 commits.

3c84eb9 Add VertSplitNC highlight group and improve vsep rendering
f48e20f Fix CI error

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