Fix duplicate augroup END on CR

[mmrwoods]

Hi @cohama,

When editing vimscript files if you enter <CR> after augroup END a duplicate augroup END is added.

I've updated the pattern to address this, by adding a negative lookahead to not match augroup END.

Hope this is useful :-)

[mmrwoods]

Hi @cohama, just wondering if you have any thoughts on this (and the other two PRs I submitted a while ago).

I can wrap them all into one PR if you would prefer.

If you have any questions please let me know.

Thanks

[cohama]

Thank you for your pull requests. I prefer several small pull requests to one large pull request.

I have a question about this PR.

What do you mean by “duplicate”? Did you encounter any issues with the augroup?

I tried to reproduce the issue, but I could not.

[mmrwoods]

At the end of a line containing augroup END, if you hit <CR> another augroup END is added.

I realise it is an edge case, but I have occasionally found myself hitting <CR> after augroup END.

EDIT: see screen recording showing issue

Screen.Recording.2026-07-11.at.08.49.39.mov