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?
David
On Fri, Aug 8, 2014 at 12:40 PM, David Barnett <[email protected]> wrote:
> It looks like some change between 7.4.316 and 7.4.389 has made vim
> extremely sluggish when just scrolling around in files if the
> vim-indent-guides plugin is installed:
> https://github.com/nathanaelkane/vim-indent-guides/issues/75. This plugin
> does custom syntax highlighting, which may be a little dirty, but it's
> surprising that performance got so much worse all the sudden.
>
> Were there any recent changes to vim's syntax highlighting that might
> account for the lag? Would it be possible to fix the regression, or revert
> the offending change until it can be implemented in a more performant way?
>
> David
>
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