Hi,

On Thu, Feb 4, 2021 at 2:02 PM [email protected] <[email protected]> wrote:

> Hi all,
>
> We recently received an issue about using :vimgrep in the Go plugin govim
> <https://github.com/govim/govim>.
>
> In govim we handle `BufRead` autocommands for .go files, and send
> notifications to the Language Server that a new file has been opened.
>
> As :vimgrep search through files, we do get autocommands for each and
> every file, but sending notifications for all .go files searched will put a
> lot of load on the language server as it thinks that the user actually
> opened (and closed) all files searched within just a second.
>
> *Is there a way to differentiate BufRead autocommands triggered by
> :vimgrep from others?* It would be great if we could identify those and
> filter them, or even better if they didn't trigger autocommands in the
> first place.
>
>
The MRU (https://github.com/yegappan/mru) plugin uses the QuickFixCmdPre and
QuickFixCmdPost autocmds to stop adding the buffers to the MRU list when a
vimgrep command is executed. You can see whether that will help.

https://github.com/yegappan/mru/blob/master/plugin/mru.vim#L954

Regards,
Yegappan


> I also noticed that vim will keep the same buffer numbers as :vimgrep
> search through files without a match. If it do find a match the file &
> buffer is kept and the buffer number is increased. For those we obviously
> do want the autocommand as they are indeed opened.
>
> I can't find any information about if this is expected, except for the
> "Vim Buffer FAQ" over at https://vim.fandom.com/wiki/Vim_buffer_FAQ.
> According to that FAQ a buffer number should never be reused.
>
> *Are there cases where we should expect that a buffer number is reused
> within the same vim session?*
>
> Regards, Pontus
>
> 40googlegroups.com
> <https://groups.google.com/d/msgid/vim_dev/d8cef0cb-fe57-413a-9294-c3685c50cb82n%40googlegroups.com?utm_medium=email&utm_source=footer>
> .
>

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