On Mon, May 01, 2017 at 04:39:30PM -0400, Aaron Conole wrote:
> Ben Pfaff <[email protected]> writes:
> 
> > On Mon, May 01, 2017 at 04:14:09PM -0400, Aaron Conole wrote:
> >> A common way of expressing 'raise to the power of' when authoring
> >> comments uses **.  This is currently getting caught by the pointer
> >> spacing warning.  So, catch it here.
> >> 
> >> Reported-by: Lance Richardson <[email protected]>
> >> Signed-off-by: Aaron Conole <[email protected]>
> >
> > Thanks a lot for improving checkpatch, it should be helpful for
> > review.
> 
> Thank you for the incrementals, and review.
> 
> > Maybe I'll start using it in my review process.
> 
> I use it by default in all of my development.  The following is my
> .git/hooks/pre-commit:
> 
>   #!/bin/sh
>   if git rev-parse --verify HEAD 2>/dev/null
>   then
>       git diff-index -p --cached HEAD
>   else
>       :
>   fi | utilities/checkpatch.py -s
> 
> > I applied all of these patches to master.

Oh, interesting.

I'm playing with it by applying the following and then changing my
"mutt" shortcut for applying a patch from
    cd ~/nicira/ovs && git am -s
to
    cd ~/nicira/ovs && checkpatch.py -p | git am -s

I'm not sure whether my patch makes sense, but it makes me feel clever
either way.

--8<--------------------------cut here-------------------------->8--

From: Ben Pfaff <[email protected]>
Date: Mon, 1 May 2017 13:42:46 -0700
Subject: [PATCH] checkpatch: Add support for "pass-through" mode.

Signed-off-by: Ben Pfaff <[email protected]>
---
 utilities/checkpatch.py | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/utilities/checkpatch.py b/utilities/checkpatch.py
index 387549afe3f6..ced5e9f8c241 100755
--- a/utilities/checkpatch.py
+++ b/utilities/checkpatch.py
@@ -342,6 +342,8 @@ def usage():
           "Do not emit an error if no Signed-off-by line is present")
     print("-t|--skip-trailing-whitespace\t"
           "Skips the trailing whitespace test")
+    print("-p|--pass-through\t"
+          "Print a copy of the input as output, when reading from stdin")
 
 
 def ovs_checkpatch_file(filename):
@@ -366,17 +368,19 @@ def ovs_checkpatch_file(filename):
 
 if __name__ == '__main__':
     try:
-        optlist, args = getopt.getopt(sys.argv[1:], 'bhlstf',
+        optlist, args = getopt.getopt(sys.argv[1:], 'bhlstfp',
                                       ["check-file",
                                        "help",
                                        "skip-block-whitespace",
                                        "skip-leading-whitespace",
                                        "skip-signoff-lines",
-                                       "skip-trailing-whitespace"])
+                                       "skip-trailing-whitespace",
+                                       "pass-through"])
     except:
         print("Unknown option encountered. Please rerun with -h for help.")
         sys.exit(-1)
 
+    pass_through = False
     for o, a in optlist:
         if o in ("-h", "--help"):
             usage()
@@ -391,6 +395,8 @@ if __name__ == '__main__':
             skip_trailing_whitespace_check = True
         elif o in ("-f", "--check-file"):
             checking_file = True
+        elif o in ("-p", "--pass-through"):
+            pass_through = True
         else:
             print("Unknown option '%s'" % o)
             sys.exit(-1)
@@ -404,5 +410,10 @@ if __name__ == '__main__':
         if sys.stdin.isatty():
             usage()
             sys.exit(-1)
-        sys.exit(ovs_checkpatch_parse(sys.stdin.read()))
+
+        content = sys.stdin.read()
+        exit_code = ovs_checkpatch_parse(content)
+        if pass_through:
+            sys.stdout.write(content)
+        sys.exit(exit_code)
     sys.exit(ovs_checkpatch_file(filename))
-- 
2.10.2

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