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bug#17814: 24.3.91; better string manipulation in subr-x

From: Shigeru Fukaya
Subject: bug#17814: 24.3.91; better string manipulation in subr-x
Date: Sat, 21 Jun 2014 13:07:27 +0900

>The above string-match will fail on a string that has a newline, and the
>subsequent code will use whatever was the old match-data, resulting in
>broken behavior.

"." in "\\`[\s\t\n\r]*\\(.*?\\)[\s\t\n\r]*\\'" must be "\\(.\\|\n\\)", sorry.

>Other than that, I don't have any opinion on such changes (I've never
>heard anyone complain about code size or cpu-time of any of those
>functions, so I think it largely doesn't matter either way).

Using string-trim-to-right and string-trim-to-left creates unnecessary
temporary string if both sides need triming may matter, then?

Anyway, I think I'm just sending a small proposal.  I don't care much
if you throw it away.  Thank you for spending your time.


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