[PATCH 4/5] coccinelle: put sane filenames into output patches

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Coccinelle outputs its suggested transformations as patches, whose
header looks something like this:

  --- commit.c
  +++ /tmp/cocci-output-19250-7ae78a-commit.c

Note the lack of 'diff --opts <old> <new>' line, the differing number
of path components on the --- and +++ lines, and the nonsensical
filename on the +++ line.  'patch -p0' can still apply these patches,
as it takes the filename to be modified from the --- line.  Alas, 'git
apply' can't, because it takes the filename from the +++ line, and
then complains about the nonexisting file.

Pass the '--patch .' options to Coccinelle via the SPATCH_FLAGS 'make'
variable, as it seems to make it generate proper context diff patches,
with the header starting with a 'diff ...' line and containing sane
filenames.  The resulting 'contrib/coccinelle/*.cocci.patch' files
then can be applied both with 'git apply' and 'patch' (even without
'-p0').

Signed-off-by: SZEDER Gábor <szeder.dev@xxxxxxxxx>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 73e2d16926..72ea29df4e 100644
--- a/Makefile
+++ b/Makefile
@@ -564,7 +564,7 @@ SPATCH = spatch
 export TCL_PATH TCLTK_PATH
 
 SPARSE_FLAGS =
-SPATCH_FLAGS = --all-includes
+SPATCH_FLAGS = --all-includes --patch .
 
 
 
-- 
2.18.0.408.g42635c01bc




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