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maint: Tell git that *.py files should use python diff hunks

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Git's default hunk pattern recognizer favors the C language, but it
also includes several built-in diff styles that give saner results in
other languages.  In particular, telling git to treat all .py files as
python changes the beginning of diff hunks as follows:

|  --- a/python/qemu/machine.py
|  +++ b/python/qemu/machine.py
| -@@ -337,12 +337,12 @@ class QEMUMachine:
| +@@ -337,12 +337,12 @@ def _post_shutdown(self) -> None:
|               self._qmp.close()

which makes it much easier to tell what function a patch is touching,
rather than a non-descript listing of what class contains the changes.

Sadly, our python files that don't use .py suffix (such as numerous
iotests) do not benefit from this glob.

Reported-by: John Snow <jsnow@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210215222524.1820223-1-eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
This commit is contained in:
Eric Blake 2021-02-15 16:25:24 -06:00 committed by Cleber Rosa
parent cdcc50bf6e
commit 991e80911e
1 changed files with 1 additions and 0 deletions
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.gitattributes vendored
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@ -1,2 +1,3 @@
*.c.inc diff=c *.c.inc diff=c
*.h.inc diff=c *.h.inc diff=c
*.py diff=python