# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 1516237673 18000
# Node ID 555bc4ab37ade181e46b01be5c2fb1f589e03345
# Parent  c3ebe69f6391a8f71b8089bf6e1586ab091fb52f
commands: rewrite legacy ternary operator hack using modern syntax

Differential Revision: https://phab.mercurial-scm.org/D1885

diff -r c3ebe69f6391 -r 555bc4ab37ad mercurial/commands.py
--- a/mercurial/commands.py	Wed Jan 17 20:07:25 2018 -0500
+++ b/mercurial/commands.py	Wed Jan 17 20:07:53 2018 -0500
@@ -1219,7 +1219,7 @@
             raise error.Abort(_("--base is incompatible with specifying "
                                "a destination"))
         common = [repo.lookup(rev) for rev in base]
-        heads = revs and map(repo.lookup, revs) or None
+        heads = map(repo.lookup, revs) if revs else None
         outgoing = discovery.outgoing(repo, common, heads)
     else:
         dest = ui.expandpath(dest or 'default-push', dest or 'default')