transplant: add "transplanted" keyword

transplant: add "transplanted" keyword

  $ hg log --template '{rev} {transplanted}\n'
  7 a53251cdf717679d1907b289f991534be05c997a

--- a/hgext/transplant.py	Thu Mar 17 12:00:49 2011 -0500
+++ b/hgext/transplant.py	Thu Mar 17 22:17:27 2011 +0100
@@ -17,7 +17,7 @@
 import os, tempfile
 from mercurial import bundlerepo, cmdutil, hg, merge, match
 from mercurial import patch, revlog, util, error
-from mercurial import revset
+from mercurial import revset, templatekw
 
 class transplantentry(object):
     def __init__(self, lnode, rnode):
@@ -608,8 +608,15 @@
         cs.add(r)
     return [r for r in s if r in cs]
 
+def kwtransplanted(repo, ctx, **args):
+    """:transplanted: String. The node identifier of the transplanted
+    changeset if any."""
+    n = ctx.extra().get('transplant_source')
+    return n and revlog.hex(n) or ''
+
 def extsetup(ui):
     revset.symbols['transplanted'] = revsettransplanted
+    templatekw.keywords['transplanted'] = kwtransplanted
 
 cmdtable = {
     "transplant":

--- a/tests/test-transplant.t	Thu Mar 17 12:00:49 2011 -0500
+++ b/tests/test-transplant.t	Thu Mar 17 22:17:27 2011 +0100
@@ -68,6 +68,18 @@
   $ hg help revsets | grep transplanted
       "transplanted(set)"
 
+test tranplanted keyword
+
+  $ hg log --template '{rev} {transplanted}\n'
+  7 a53251cdf717679d1907b289f991534be05c997a
+  6 722f4667af767100cb15b6a79324bf8abbfe1ef4
+  5 37a1297eb21b3ef5c5d2ffac22121a0988ed9f21
+  4 
+  3 
+  2 
+  1 
+  0 
+
   $ hg clone ../t ../prune
   updating to branch default
   4 files updated, 0 files merged, 0 files removed, 0 files unresolved