--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/topic/revset.py Wed Jun 10 15:26:50 2015 -0400
@@ -0,0 +1,23 @@
+from mercurial import revset
+
+def topicset(repo, subset, x):
+ """`topic([topic])`
+ Specified topic or all changes with any topic specified.
+
+ If `topic` starts with `re:` the remainder of the name is treated
+ as a regular expression.
+
+ TODO: make `topic(revset)` work the same as `branch(revset)`.
+ """
+ args = revset.getargs(x, 0, 1, 'topic takes one or no arguments')
+ if args:
+ # match a specific topic
+ topic = revset.getstring(args[0], 'topic() argument must be a string')
+ _kind, _pattern, matcher = revset._stringmatcher(topic)
+ else:
+ matcher = lambda t: bool(t)
+ drafts = subset.filter(lambda r: repo[r].mutable())
+ return drafts.filter(lambda r: matcher(repo[r].extra().get('topic', '')))
+
+def modsetup():
+ revset.symbols.update({'topic': topicset})