Sunday, August 10, 2014

Re: vim-7.4.389 UI extremely sluggish with custom syntax highlighting plugins

You're not asking for the output of getmatches(), are you? Or are you talking about debugging in gdb? I haven't found any way to query match positions from within vim.

The repro case I'm using now is
vim -c "highlight def link RightMargin Error | exec ('match RightMargin /\%<42v.\%>41v/')" SOMEFILE
So you don't need any plugins to verify.

David


On Sat, Aug 9, 2014 at 4:08 AM, Bram Moolenaar <Bram@moolenaar.net> wrote:

David Barnett wrote:

> Looks like it's patch 7.4.362:
>
> Problem:    When matchaddpos() uses a length smaller than the number of
> bytes
>     in the (last) character the highlight continues until the end of
>     the line.
> Solution:   Change condition from equal to larger-or-equal.
> Files:     src/screen.c
>
>
> It's a very small change but apparently problematic. Can it be reverted or
> rethought?

I'm glad you could pinpoint it.  I assumed that when the condition
evaluates to true the match information would be updated.  But perhaps
that doesn't happen in this case and it searches for a match every time.

Needs some debugging to figure out what happens.  What matches does this
plugin add when it's slow?

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