[vim/vim] fix hlset() failure with attribute values containing spaces (PR #19843)

[mattn]

hlset(hlget('Normal')) fails with E416 when a highlight attribute value contains spaces (e.g. font name "Monospace 10"). hlg_add_or_update() builds a string like "font=Monospace 10" and passes it to do_highlight(), whose parser splits on whitespace and treats "10" as a separate key without "=".

Fix by quoting values with single quotes (e.g. font='Monospace 10') when the value contains spaces and the attribute is a key=value pair. do_highlight() already supports single-quoted values.

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

  https://github.com/vim/vim/pull/19843

Commit Summary

• 25a56d2 fix hlset() failure with attribute values containing spaces

File Changes

(2 files)

• M src/highlight.c (18)
• M src/testdir/test_highlight.vim (23)

Patch Links:

• https://github.com/vim/vim/pull/19843.patch
• https://github.com/vim/vim/pull/19843.diff

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