--- a/onsub.py	Mon Sep 06 12:21:02 2010 +0200
+++ b/onsub.py	Mon Sep 06 12:35:30 2010 +0200
@@ -37,9 +37,10 @@
         containing repository's ``.hgsubstate`` file.
     """
     cmd = ' '.join(args)
-    foreach(ui, repo, cmd, not opts.get('breadth_first'), opts.get('print0'))
+    foreach(ui, repo, cmd, not opts.get('breadth_first'), opts.get('print0'),
+            opts.get('ignore_errors'))
 
-def foreach(ui, repo, cmd, depthfirst, print0):
+def foreach(ui, repo, cmd, depthfirst, print0, ignoreerrors):
     """execute cmd in repo.root and in each subrepository"""
     ctx = repo['.']
     work = [ctx.sub(subpath) for subpath in sorted(ctx.substate)]
@@ -57,11 +58,16 @@
             ui.write(relpath, "\0")
         else:
             ui.note(_("executing '%s' in %s\n") % (cmd, relpath))
+        if ignoreerrors:
+            onerr = None
+        else:
+            onerr = util.Abort
         util.system(cmd, environ=dict(HG_SUBPATH=relpath,
                                       HG_SUBURL=sub._path,
                                       HG_SUBSTATE=sub._state[1],
                                       HG_REPO=repo.root),
-                    cwd=os.path.join(repo.root, relpath), onerr=util.Abort,
+                    cwd=os.path.join(repo.root, relpath),
+                    onerr=onerr,
                     errprefix=_('terminated onsub in %s') % relpath)
 
         if isinstance(sub, subrepo.hgsubrepo):
@@ -77,7 +83,9 @@
         (onsub,
          [('b', 'breadth-first', None,
            _('use breadth-first traversal')),
+          ('', 'ignore-errors', None,
+           _('continue execution despite errors')),
           ('0', 'print0', None,
            _('end subrepository names with NUL, for use with xargs'))],
-         _('[-b] [-0] CMD'))
+         _('[-b] [-0] [--ignore-errors] CMD'))
 }