bug#35202: 27.0.50; Info-quoted false positives and false negatives

[Eli Zaretskii]

> From: Mauro Aranda <maurooaranda@gmail.com>
> Date: Tue, 9 Apr 2019 14:40:48 -0300
> Cc: 35202@debbugs.gnu.org
> 
> I have come up with the following way of testing a new regexp:
> Step 1: In Info files that come with Emacs, search the original
> regexp and the new regexp for all the matches.  Compare both results,
> discarding the insersecting values (IOW, discard the matches for which a
> new regexp wouldn't introduce new behavior).
> 
> Step 2: Based on the previous, analyze each new behavior, to see if a
> new regexp does the right thing, or not.
> 
> Step 3: Accept, adjust or discard the regexp, accordingly.  If not
> accepted, go back to Step 1 for a new iteration.
> 
> Provided the final regexp doesn't break display in other places (and
> of course, improves the current behavior), would the procedure 
> I've just described be enough to trust a change?

Sounds good to me, thanks.