diff -r 5acf520f2115 -r 67e9fb23a32b hgkw/kwutil.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hgkw/kwutil.py	Thu Dec 21 16:00:45 2006 +0100
@@ -0,0 +1,26 @@
+'''
+kwutil provides required little helpers for the Mercurial
+keyword extension and the Python pretxncommit hook pretxnkw.
+'''
+
+from mercurial import util
+import os.path
+
+# supported keywords for use in regexes
+hgkeywords = 'Id|Header|Author|Date|Revision|RCSFile|Source'
+
+def kwexpand(matchobj, repo, Revision, f, date, Author):
+    '''Called by keyword extension and pretxnkw pretxncomit hook,
+    sets supported keywords as local variables and evaluates them
+    to their expansion if matchobj is equal to their string
+    representation.'''
+    RCSFile = os.path.basename(f)+',v'
+    Source = os.path.join(repo.root, f)+',v'
+    Date = util.datestr(date)
+    revdateauth = '%s %s %s' % (Revision,
+            util.datestr(date=date, format=util.defaultdateformats[0]),
+                                                # %Y-%m-%d %H:%M:%S
+            util.shortuser(Author))
+    Header = '%s %s' % (Source, revdateauth)
+    Id = '%s %s' % (RCSFile, revdateauth)
+    return '$%s: %s $' % (matchobj.group(1), eval(matchobj.group(1)))