Add git-reup and friends

git_merge_base_tag.py

Index: git_merge_base_tag.py
diff --git a/git_merge_base_tag.py b/git_merge_base_tag.py
new file mode 100755
index 0000000000000000000000000000000000000000..a59bddc8f79b0c7bd0e94d6ee0f01f0557d66991
--- /dev/null
+++ b/git_merge_base_tag.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Explicitly set/remove the merge-base for the current branch.
+
+This manually set merge base will be a stand-in for `git merge-base` for the
+purposes of the chromium depot_tools git extensions.  If the |merge_base|
+parameter is omitted the merge-base for this branch will be set to the
+equivalent of `git merge-base <branch> <upstream>`.
+"""
+
+import argparse
+import sys
+
+from subprocess2 import CalledProcessError
+
+from git_common import remove_merge_base, manual_merge_base, current_branch
+
+
+def main(argv):
+  parser = argparse.ArgumentParser(
+    description=__doc__.strip().splitlines()[0],
+    epilog=''.join(__doc__.strip().splitlines()[1:]))
+  parser.add_argument(
+    'merge_base', nargs='?',
+    help='The new hash to use as the merge base for the current branch'
+  )
+  opts = parser.parse_args(argv)
+
+  if opts.merge_base:
+    manual_merge_base(current_branch(), opts.merge_base)
+  else:
+    try:
+      remove_merge_base(current_branch())

[agable, 2014/03/21 01:14:21]

running this with no argument removes the tag? That's unintuitive.

[iannucci, 2014/03/22 04:17:35]

Well, the helptext does say that. I guess no args should be 'show' and '-d'
should be remove.

Done (and improved).

+    except CalledProcessError:
+      print "No merge base currently exists for this branch."
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))