hgk: ctx.parents() problem introduced by 2d54e7c1e69d

tests/test-hgk

@@ -0,0 +1,11 b''
+#!/bin/sh
+
+echo "[extensions]" >> $HGRCPATH
+echo "hgk=" >> $HGRCPATH
+
+hg init repo
+cd repo
+echo a > a
+hg ci -Am adda
+hg debug-cat-file commit 0
+

tests/test-hgk.out

@@ -0,0 +1,9 b''
+adding a
+tree a0c8bcbbb45c
+parent 000000000000
+author test 0 0
+committer test 0 0
+revision 0
+branch default
+
+adda

hgext/hgk.py

@@ -102,10 +102,9 b' def catcommit(ui, repo, n, prefix, ctx=N'
     nlprefix = '\n' + prefix;
     if ctx is None:
         ctx = repo[n]
-    (p1, p2) = ctx.parents()
     ui.write("tree %s\n" % short(ctx.changeset()[0])) # use ctx.node() instead ??
-    if p1: ui.write("parent %s\n" % short(p1.node()))
-    if p2: ui.write("parent %s\n" % short(p2.node()))
+    for p in ctx.parents():
+        ui.write("parent %s\n" % short(p.node()))
     date = ctx.date()
     description = ctx.description().replace("\0", "")
     lines = description.splitlines()