Am 13.11.2012 20:50, schrieb Linus Torvalds:
On Tue, Nov 13, 2012 at 11:40 AM, Linus Torvalds
<> wrote:

I have to wonder why you care? As far as I'm concerned, the only valid
space is space, TAB and CR/LF.

Anything else is *noise*, not space. What's the reason for even caring?

Btw, expanding the whitespace selection may actually be very
counter-productive. It is used primarily for things like removing
extraneous space at the end of lines etc, and for that, the current
selection of SPACE, TAB and LF/CR is the right thing to do.

Adding things like FF etc - that are *technically* whitespace, but
aren't the normal kind of silent whitespace - is potentially going to
change things too much. People might *want* a form-feed in their
messages, for all we know.

The patch was motivated by the integration of the wildmatch library, which exposes named character classes to users. It replaces a call of fnmatch in match_pathname. Users probably expect [:space:] to mean the same in git as in other programs.

I never saw a vertical tab and I can't imagine what it's used for. I'd expect form-feeds to be matched as space, though. Didn't see them very often, admittedly.

Nevertheless, it's unfortunate that we have an isspace() that *almost* does what the widely known thing of the same name does. I'd shy away from changing git's version directly, because it's used more than a hundred times in the code, and estimating the impact of adding \v and \f to it. Perhaps renaming it to isgitspace() is a good first step, followed by adding a "standard" version of isspace() for wildmatch?


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