Re: Experimental regexp check: repetition of empty-matching expression

[Paul Eggert]

Mattias Engdegård wrote:

> Is this useful, or a pointless waste of time?

I think it's useful, except that the last entry (in dabbrev.el) seems to be a 
false alarm, as a regexp pattern is initially nil but is assigned something else 
before use, and the trawler assumes it's nil. I installed the attached patch 
into master to fix the other issues as best I could. Thanks.

0001-Omit-rewrite-useless-regexp-repetitions.txt
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