Dmitry Gutov <dmitry@gutov.dev> writes:

> On 20/07/2023 00:16, Spencer Baugh wrote:
>> In Emacs alone, there are a few things we could do:
>> - we could mitigate the find bug by optimizing the regexp before we pass
>> it to find; this should basically remove all the overhead but makes the
>> find command uglier and harder to edit
>
> I like these two approaches.

Much delayed, but the attached patch implements this optimization
approach.  In my testing, it provides a substantial speed-up for rgrep.