[vim/vim] fix(highlight): use VertSplit instead of VertSplitNC for winbar rows (PR #19987)

[h_east]

vsep_row_is_curwin() and right_neighbor_at_row() used W_WINROW() which excludes winbar rows from the window's range. This caused the vertical separator at winbar rows to use VertSplitNC even when curwin is adjacent.

Use w_winrow directly so winbar rows are included in the range check.

Fixes: #19985

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

  https://github.com/vim/vim/pull/19987

Commit Summary

• a2ec5de fix(highlight): use VertSplit instead of VertSplitNC for winbar rows

File Changes

(4 files)

• M src/screen.c (6)
• A src/testdir/dumps/Test_VertSplitNC_winbar_1.dump (12)
• A src/testdir/dumps/Test_VertSplitNC_winbar_2.dump (12)
• M src/testdir/test_highlight.vim (32)

Patch Links:

• https://github.com/vim/vim/pull/19987.patch
• https://github.com/vim/vim/pull/19987.diff

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[Christian Brabandt]

chrisbra left a comment (vim/vim#19987)

thanks

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[Christian Brabandt]

Closed #19987 via 25e9fc4.

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