fix 'hg tag <tagname> <revision>

fix 'hg tag <tagname> <revision>

- fix a collision with the option keyword rev and the option
  name
- update the tests

--- a/mercurial/commands.py	Thu Dec 22 13:18:44 2005 -0600
+++ b/mercurial/commands.py	Tue Dec 27 12:52:10 2005 -0600
@@ -2019,7 +2019,7 @@
         for f in changes:
             ui.write(format % f)
 
-def tag(ui, repo, name, rev=None, **opts):
+def tag(ui, repo, name, rev_=None, **opts):
     """add a tag for the current tip or a given revision
 
     Name a particular revision using <name>.
@@ -2037,10 +2037,10 @@
     """
     if name == "tip":
         raise util.Abort(_("the name 'tip' is reserved"))
-    if 'rev' in opts:
-        rev = opts['rev']
-    if rev:
-        r = hex(repo.lookup(rev))
+    if opts['rev']:
+        rev_ = opts['rev']
+    if rev_:
+        r = hex(repo.lookup(rev_))
     else:
         r = hex(repo.changelog.tip())
 

--- a/tests/test-tag	Thu Dec 22 13:18:44 2005 -0600
+++ b/tests/test-tag	Tue Dec 27 12:52:10 2005 -0600
@@ -11,6 +11,13 @@
 echo foo >> .hgtags
 hg tag -d "0 0" "bleah2" || echo "failed"
 
+hg revert .hgtags
+hg tag -d "0 0" -r 0 "bleah0"
+hg tag -l -d "0 0" "bleah1" 1
+
+cat .hgtags
+cat .hg/localtags
+
 hg tag -l 'xx
 newline'
 hg tag -l 'xx:xx'

--- a/tests/test-tag.out	Thu Dec 22 13:18:44 2005 -0600
+++ b/tests/test-tag.out	Tue Dec 27 12:52:10 2005 -0600
@@ -18,5 +18,8 @@
 
 abort: working copy of .hgtags is changed (please commit .hgtags manually)
 failed
+acb14030fe0a21b60322c440ad2d20cf7685a376 bleah
+acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0
+863197ef03781c4fc00276d83eb66c4cb9cd91df bleah1
 abort: '\n' cannot be used in a tag name
 abort: ':' cannot be used in a tag name