hg: make "_outgoing()" return empty list instead of "None"
This patch makes "_outgoing()" return empty list instead of "None", if
there are no outgoing changesets, because:
- returning "None" requires callers to examine whether returned
value is "None" or not explicitly, if callers want to execute loop
on returned value, but
- there are no explicit needs to return "None"
--- a/mercurial/commands.py Wed Apr 16 00:37:24 2014 +0900
+++ b/mercurial/commands.py Wed Apr 16 00:37:24 2014 +0900
@@ -4354,7 +4354,7 @@
if opts.get('graph'):
cmdutil.checkunsupportedgraphflags([], opts)
o = hg._outgoing(ui, repo, dest, opts)
- if o is None:
+ if not o:
return
revdag = cmdutil.graphrevs(repo, o, opts)
--- a/mercurial/hg.py Wed Apr 16 00:37:24 2014 +0900
+++ b/mercurial/hg.py Wed Apr 16 00:37:24 2014 +0900
@@ -585,7 +585,6 @@
o = outgoing.missing
if not o:
scmutil.nochangesfound(repo.ui, repo, outgoing.excluded)
- return None
return o
def outgoing(ui, repo, dest, opts):
@@ -600,7 +599,7 @@
limit = cmdutil.loglimit(opts)
o = _outgoing(ui, repo, dest, opts)
- if o is None:
+ if not o:
return recurse()
if opts.get('newest_first'):