On Thu, Oct 15, 2015 at 4:30 AM,  <[email protected]> wrote:
> Hi all,
>
> I have right now an autocommand, au BufWritePost *.foo :run_cmd.
>
> I want it to run upon writing all files matching *.foo, but not any files 
> matching bar.*, or more equivalently bar.*.foo.
>
> How can I disable the autocommand for files starting with bar? The full path 
> of an ideally excluded file may be /tmp/dir/bar.qux.foo, while 
> /tmp/dir/qux.foo should be included
>
> Thanks, everyone!

Simple (but sometimes when it's too simple we don't think of it)

:au BufWritePost *
    \ if <amatch> !~ '^bar\.' | RunCmd | endif

see
    :h <amatch>
    :h expr-!~
    :h line-continuation

Notes:
  1. !~ takes a full-fledged Vim pattern as in the / :s :g etc.
commands, not a shell-like "glob pattern". So the ^ (spacing
circumflex) matches zero characters at the beginning of the string,
and the \. (slash-dot) matches an actual dot. Any match starting with
"bar." will thus take the (empty) false path of the :if — and do
nothing.
  2. The use of line continuation assumes that you're running Vim in
'nocompatible' mode, or at least without the C flag in 'cpoptions'.
  3. You cannot define a user command named :run_cmd but you can
define one named :RunCmd (every user-command name must start with an
uppercase letter).


Best regards,
Tony.

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