[Bug 4285] patch: does it work?

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=4285

--- Comment #1 from Denys Vlasenko <vda.linux at googlemail.com>  ---
(In reply to comment #0)
> BusyBox v1.17.2
> BusyBox v1.19.2
> Usage: patch [OPTIONS] [ORIGFILE [PATCHFILE]]
> 
> I can not get patch (it does not do any patching) to work with the same syntax
> I use with:
> patch 2.6.1
> Copyright (C) 1988 Larry Wall
> Copyright (C) 2003, 2009 Free Software Foundation, Inc.
> 
> patch -p0 -N < ../patches/7.3.$b >> ../patches.log
> 
> I tried removing the '-N' still it does not do any patching.

Please attach to this bug:

* the patch file you are trying to apply
* original file(s) before patching
* .config file you used to build your busybox binary

and specify exact command line you are using.


> I see 'patch:' quite often in your change log.
> 
> Is patch working?

Not in every imaginable case.

However:

$ cd testsuite
$ ./runtest patch
PASS: patch with old_file == new_file
PASS: patch with nonexistent old_file
PASS: patch -R with nonexistent old_file
PASS: patch detects already applied hunk
PASS: patch detects already applied hunk at the EOF
PASS: patch -N ignores already applied hunk
PASS: patch FILE PATCH
PASS: patch at the beginning
PASS: patch creates new file

Apparently, at least some cases are working.

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