Filetype not set in vim after brew upgrade

[Akshay Hegde]

On 2024-09-09 08:42 +0200, Jan Eden via Mutt-users wrote:
> Hi,
> 
> this is a little off-topic, but maybe other mutt users are affected,
> too: Since upgrading to vim 9.1.700 this morning via homebrew, the
> filetype is not set automatically anymore when calling vim from mutt.

I just updated to 9.1.0722 this morning on my mac but the filetype detection seems
to be working fine for me.

Checking $VIMRUNTIME/filetype.vim [1] reveals that the filetype should get
set when the name of the buffer matches one of the patterns specified.

For me, mutt launches vim with a file name beginning with "mutt-*" which
matches the pattern "mutt{ng,}-*-\w\+" in [1]. So check the filename
mutt is creating for you.

Running the command ':verbose set filetype?' after mutt launches vim
should give you an output similar to mine, and more specifically should
show up as being under the $VIMRUNTIME directory unless you've
overridden it:

  filetype=mail
        Last set from <home>/.local/pkg/vim/9.1.0722/share/vim/vim91/filetype.vim line 1384

[1]: https://github.com/vim/vim/blob/v9.1.0700/runtime/filetype.vim#L1384

-- 
	Akshay

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