From f0074dfd57dc6238c730b462cdda6d048eaabbd3 Mon Sep 17 00:00:00 2001
From: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Date: Mon, 23 Mar 2020 13:58:04 -0400
Subject: Use more unique mbx names by adding subjects

When the same person sends multiple sets of patches on the same day, we
risk colliding between them. Use mbx names with cover/1st-patch subjects
in them, to help disambiguate in such cases.

Reported-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
---
 b4/__init__.py | 12 +++++++++---
 b4/mbox.py     |  8 +++++---
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/b4/__init__.py b/b4/__init__.py
index 467da13..ee5f1dc 100644
--- a/b4/__init__.py
+++ b/b4/__init__.py
@@ -337,7 +337,7 @@ class LoreSeries:
             self.patches[lmsg.counter] = lmsg
         self.complete = not (None in self.patches[1:])
 
-    def get_slug(self):
+    def get_slug(self, extended=False):
         # Find the first non-None entry
         lmsg = None
         for lmsg in self.patches:
@@ -349,8 +349,14 @@ class LoreSeries:
 
         prefix = lmsg.date.strftime('%Y%m%d')
         authorline = email.utils.getaddresses(lmsg.msg.get_all('from', []))[0]
-        author = re.sub(r'\W+', '_', authorline[1]).strip('_').lower()
-        slug = '%s_%s' % (prefix, author)
+        if extended:
+            local = authorline[1].split('@')[0]
+            unsafe = '%s_%s_%s' % (prefix, local, lmsg.subject)
+            slug = re.sub(r'\W+', '_', unsafe).strip('_').lower()
+        else:
+            author = re.sub(r'\W+', '_', authorline[1]).strip('_').lower()
+            slug = '%s_%s' % (prefix, author)
+
         if self.revision != 1:
             slug = 'v%s_%s' % (self.revision, slug)
 
diff --git a/b4/mbox.py b/b4/mbox.py
index f4ae178..bb18fc9 100644
--- a/b4/mbox.py
+++ b/b4/mbox.py
@@ -128,8 +128,10 @@ def mbox_to_am(mboxfile, config, cmdargs):
         slug = wantname
         if wantname.find('.') > -1:
             slug = '.'.join(wantname.split('.')[:-1])
+        gitbranch = slug
     else:
-        slug = lser.get_slug()
+        slug = lser.get_slug(extended=True)
+        gitbranch = lser.get_slug(extended=False)
 
     am_filename = os.path.join(outdir, '%s.mbx' % slug)
     am_cover = os.path.join(outdir, '%s.cover' % slug)
@@ -193,11 +195,11 @@ def mbox_to_am(mboxfile, config, cmdargs):
 
     if base_commit:
         logger.critical(' Base: %s', base_commit)
-        logger.critical('       git checkout -b %s %s', slug, base_commit)
+        logger.critical('       git checkout -b %s %s', gitbranch, base_commit)
         logger.critical('       git am %s', am_filename)
     else:
         logger.critical(' Base: not found, sorry')
-        logger.critical('       git checkout -b %s master', slug)
+        logger.critical('       git checkout -b %s master', gitbranch)
         logger.critical('       git am %s', am_filename)
 
     am_mbx.close()
-- 
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