[thg-dev] [PATCH] update: write 'unknown revision!' in target label

[Adrian Buehlmann]

# HG changeset patch
# User Adrian Buehlmann <adr...@cadifra.com>
# Date 1253885808 -7200
# Node ID 87c87a71a7c36f445e388374f3c2816516029e65
# Parent  1505dc27dab170c144c0c60279dd6b6acae5cb05
update: write 'unknown revision!' in target label

diff --git a/tortoisehg/hgtk/update.py b/tortoisehg/hgtk/update.py
--- a/tortoisehg/hgtk/update.py
+++ b/tortoisehg/hgtk/update.py
@@ -14,6 +14,7 @@ from mercurial import hg, ui
 
 from tortoisehg.util.i18n import _
 from tortoisehg.util import hglib, paths
+from tortoisehg.util.hglib import LookupError, RepoLookupError, RepoError
 
 from tortoisehg.hgtk import hgcmd, gtklib, gdialog
 
@@ -227,8 +228,9 @@ class UpdateDialog(gtk.Dialog):
             else:
                 setlabel(self.new_rev_label, self.repo[newrev])
                 self.updatebtn.set_sensitive(True)
-        except hglib.RepoError:
-            pass
+        except (LookupError, RepoLookupError, RepoError):
+            self.new_rev_label.set_label(_('unknown revision!'))
+            self.updatebtn.set_sensitive(False)
 
     def update(self, repo):
         cmdline = ['hg', 'update', '--verbose']

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