[vim/vim] vimscript: do not highlight `\v` as error in a command (Issue #17873)

Maxim Kim

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Jul 28, 2025, 7:07:29 AM7/28/25

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habamax created an issue (vim/vim#17873)

Steps to reproduce

# fix trailing spaces
command! FixTrailingSpaces :exe 'normal! m`'<bar>
      \ :keepj silent! :%s/\r\+$//g<bar>
      \ :keepj silent! :%s/\v(\s+$)//g<bar>
      \ :exe 'normal! ``'<bar>
      \ :echom 'Remove trailing spaces and ^Ms.'

image.png (view on web)

@dkearns fyi

Expected behaviour

'v' shouldn't be highlighted as error.

Version of Vim

9.1.1591

Environment

debian12,bash

Logs and stack traces

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dkearns

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Jul 28, 2025, 7:19:27 AM7/28/25

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dkearns left a comment (vim/vim#17873)

As a workaround until it's fixed, a block can be used rather than line continuations. It's arguably the better approach anyway.

# fix trailing spaces
command! FixTrailingSpaces {
   :exe 'normal! m`'<bar>
   :keepj silent! :%s/\r\+$//g<bar>
   :keepj silent! :%s/\v(\s+$)//g<bar>
   :exe 'normal! ``'<bar>
   :echom 'Remove trailing spaces and ^Ms.'
}

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Maxim Kim

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Jul 28, 2025, 7:21:06 AM7/28/25

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habamax left a comment (vim/vim#17873)

Yeah, thx! It is just quite old command I have, will change it to the block.

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dkearns

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Jul 28, 2025, 7:54:01 AM7/28/25

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dkearns left a comment (vim/vim#17873)

FWIW | rather than <bar> works in :command too and should be highlighted correctly. "Two out of three ain't bad", as someone once sang.

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dkearns

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12:59 PM (6 hours ago) 12:59 PM

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dkearns left a comment (vim/vim#17873)

<bar> will need to be treated as a command prefix group in :command replacement strings when ex-commands are properly contained there.

It's not needed but as it's supported there's about 100 files using it on GitHub.