# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 1489897286 14400
# Node ID 7e9c7d1d65cbfd273a74f1fcda49ed32b1a1681d
# Parent  3c77414a0f9c38ba6b1eacfb6561fa0b41bfe95a
dispatch: extract maybe-use-repr formatting to helper function

I think this makes the code much clearer. I had to think for a bit to
unpack the old-school `condition and if-true or if-false` dance, and
formatting argument lists here shouldn't be performance critical.

diff -r 3c77414a0f9c -r 7e9c7d1d65cb mercurial/dispatch.py
--- a/mercurial/dispatch.py	Sun Mar 19 00:18:53 2017 -0400
+++ b/mercurial/dispatch.py	Sun Mar 19 00:21:26 2017 -0400
@@ -92,8 +92,13 @@
     if inst.hint:
         write(_("(%s)\n") % inst.hint)
 
+def _mayberepr(a):
+    if ' ' in a:
+        return repr(a)
+    return a
+
 def _formatargs(args):
-    return ' '.join(' ' in a and repr(a) or a for a in args)
+    return ' '.join(_mayberepr(a) for a in args)
 
 def dispatch(req):
     "run the command specified in req.args"