To discover filenames from the --- and +++ lines in a traditional
unified diff, currently "git apply" scans forward for a whitespace
character on each line and stops there. It can't use the whole line
because "diff -u" likes to include timestamps, like so:
--- foo 2000-07-12 16:56:50.020000414 -0500
+++ bar 2010-07-12 16:56:50.020000414 -0500
The whitespace-seeking heuristic works great, even when the tab
has been converted to spaces by some email + copy-and-paste
related corruption.
Except for one problem: if the filename itself contains whitespace,
the inferred filename will be too short.
When Giuseppe ran into this problem, it was for a file creation
patch (for debian/licenses/LICENSE.global BSD-style Chromium).
So one can't use the list of files present in the index to deduce an
appropriate filename (not to mention that way lies madness; see
v0.99~402, 2005-05-31).
Instead, look for a timestamp and use that if present to mark the end
of the filename. If no timestamp is present, the old heuristic is
used, with one exception: the space character \040 is not considered
terminating whitespace any more unless it is followed by a timestamp.
Reported-by: Giuseppe Iuculano <iuculano@debian.org>
Acked-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Check that "git apply" can cope with strange filenames, particularly
filenames with spaces.
Not all platforms have a sane enough diff -u and expand to
reliably create the such patches and maybe future versions of GNU
diff will handle funny characters differently, so this uses
pre-generated patches. The script used to generate them is in
t/t4135/make-patches.
Filenames with tabs are not usable on NTFS; use something like the
FUNNYNAMES prerequisite from v1.3.0-rc1~67 (2006-03-03) to skip the
relevant tests when appropriate. The detection is not shared in
test-lib.sh to avoid wasting time while running other test scripts.
Backslash is the path separator on Windows, so do not used it in
file names there (v1.6.3-rc0~93^2~6, 2009-03-13).
Finally, filenames starting with a quotation mark do not behave well
in msys (see v1.7.0-rc0~94^2, t4030, t4031: work around bogus MSYS
bash path conversion, 2010-01-01), so skip those tests on Windows,
too.
Helped-by: Andreas Schwab <schwab@linux-m68k.org>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
