bug#23928: 25.0.95; Performance regression observable with smartparens

[Eli Zaretskii]

> From: Aaron Jensen <aaronjensen@gmail.com>
> Date: Sat, 09 Jul 2016 14:56:40 +0000
> 
> When compared to emacs 24.5, smartparens is now nearly unusable in emacs
> 25. I'm not familiar enough with emacs to track down the specific
> performance regression, but it appears to be regular expression or
> save-excursion related. This is the function that shows up hot on
> profiles:
> 
> https://github.com/Fuco1/smartparens/blob/1d858a9ec235cef5285503b6bb34be84cc3f5aa3/smartparens.el#L3621-L3646

All of the profiles in that issue point to smartparens' own functions
as the main sinks of CPU time, so I'm unsure why you think it's an
Emacs regression.