[Webkit-unassigned] [Bug 119191] Regular expressions with ".?" expressions at the start and the end match the entire string

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=119191

--- Comment #3 from Sukolsak Sakshuwong <sukolsak at gmail.com> ---
The benchmark results are at https://gist.github.com/sukolsak/da11c94998776a4dfb3340f12f7b7688. The patch doesn't seem to cause a significant slowdown. I can think of a way to optimize these cases (/.?abc.*/, /.*abc.?/, /.{0,4}abc.*/, etc), which involves storing the quantifiers of the leading and trailing dots in the DotStarEnclosure. But I'm not sure if we should do it.

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