# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1433976727 18000
# Node ID 3084687f799455df13c6c344ab93dd23f6b28891
# Parent  67d53e8e0c1a110bd8a542a66438dd6b94faea4e
commit: add a topic field to the in-editor commit text

diff -r 67d53e8e0c1a -r 3084687f7994 src/topic/__init__.py
--- a/src/topic/__init__.py	Wed Jun 10 17:40:50 2015 -0500
+++ b/src/topic/__init__.py	Wed Jun 10 17:52:07 2015 -0500
@@ -134,6 +134,14 @@
             f.write(t)
     return orig(ui, repo, *args, **opts)
 
+def committextwrap(orig, repo, ctx, subs, extramsg):
+    ret = orig(repo, ctx, subs, extramsg)
+    t = repo.currenttopic
+    if t:
+        ret = ret.replace("\nHG: branch",
+                          "\nHG: topic '%s'\nHG: branch" % t)
+    return ret
+
 def updatewrap(orig, ui, repo, *args, **kwargs):
     ret = orig(ui, repo, *args, **kwargs)
     pctx = repo['.']
@@ -155,5 +163,6 @@
                  _("use specified topic"), _('TOPIC')))
 
 extensions.wrapcommand(commands.table, 'update', updatewrap)
+extensions.wrapfunction(cmdutil, 'buildcommittext', committextwrap)
 topicrevset.modsetup()
 cmdutil.summaryhooks.add('topic', summaryhook)
diff -r 67d53e8e0c1a -r 3084687f7994 tests/test-topic.t
--- a/tests/test-topic.t	Wed Jun 10 17:40:50 2015 -0500
+++ b/tests/test-topic.t	Wed Jun 10 17:52:07 2015 -0500
@@ -42,6 +42,25 @@
 Still no topics
   $ hg topics
 
+Test commit flag and help text
+
+  $ echo stuff >> alpha
+  $ HGEDITOR=cat hg ci -t topicflag
+  
+  
+  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
+  HG: Leave message empty to abort commit.
+  HG: --
+  HG: user: test
+  HG: topic 'topicflag'
+  HG: branch 'default'
+  HG: changed alpha
+  abort: empty commit message
+  [255]
+  $ hg revert alpha
+  $ hg topic
+   * topicflag
+
 Make a topic
   $ hg topic narf
   $ hg topics