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[bug-diffutils] bug#20062: bug#20062: bug#20062: [PATCH] diff: add suppo


From: Paul Eggert
Subject: [bug-diffutils] bug#20062: bug#20062: bug#20062: [PATCH] diff: add support for --color
Date: Tue, 10 Mar 2015 17:06:36 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0

Giuseppe Scrivano wrote:
the
most it can hang is the time needed to print a single line.

There's no limit on line length though, right? Other than available memory. So this could be a problem. ('ls' doesn't have a similar problem, if I understand it correctly, as OSes typically have reasonably short limits on file name length.)

>Also, 'diff --color' needn't mess with signal handling unless isatty
>(fileno (outfile)).
Should this also be done if --color=always is used?

Yes. diff needs to mess with signal handling only if both (1) diff is outputting colors and (2) the output is a terminal. This is independent of why diff is doing (1).





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