--- a/.zfun/_hg
+++ b/.zfun/_hg
@@ -165,6 +165,7 @@ typeset -A _hg_cmd_globals
 _hg_labels() {
   _hg_tags "$@"
   _hg_bookmarks "$@"
+  _hg_branches "$@"
 }
 
 _hg_tags() {
@@ -191,6 +192,17 @@ typeset -A _hg_cmd_globals
   (( $#bookmarks )) && _describe -t bookmarks 'bookmarks' bookmarks
 }
 
+_hg_branches() {
+  typeset -a branches
+  local branch
+
+  _hg_cmd branches | while read branch
+  do
+    branches+=(${branch/ #    [0-9]#:*})
+  done
+  (( $#branches )) && _describe -t branches 'branches' branches
+}
+
 # likely merge candidates
 _hg_mergerevs() {
   typeset -a heads
@@ -360,8 +372,8 @@ typeset -A _hg_cmd_globals
     '(--help -h)'{-h,--help}'[display help and exit]'
     '--debug[debug mode]'
     '--debugger[start debugger]'
-    '--encoding[set the charset encoding (default: UTF8)]'
-    '--encodingmode[set the charset encoding mode (default: strict)]'
+    '--encoding[set the charset encoding]'
+    '--encodingmode[set the charset encoding mode]'
     '--lsprof[print improved command execution profile]'
     '--traceback[print traceback on exception]'
     '--time[time how long the command takes]'
@@ -617,6 +629,7 @@ typeset -A _hg_cmd_globals
   '(--only-merges -m)'{-m,--only-merges}'[show only merges]' \
   '(--patch -p)'{-p,--patch}'[show patch]' \
   '(--prune -P)'{-P+,--prune}'[do not display revision or any of its ancestors]:revision:_hg_labels' \
+  '(--branch -b)'{-b+,--branch}'[show changesets within the given named branch]:branch:_hg_branches' \
   '*:files:_hg_files'
 }