dispatch: flush ui before returning from dispatch
A chg client may exit after received the result from runcommand. It is
necessary to do a flush to make sure the warning message is printed out
and the process waiting for the chg client will actually see the output.
This helps chg to pass test-alias.t.
--- a/mercurial/dispatch.py Tue Mar 15 00:14:53 2016 +0900
+++ b/mercurial/dispatch.py Mon Mar 14 11:06:34 2016 +0000
@@ -129,6 +129,7 @@
ret = -1
finally:
duration = time.time() - starttime
+ req.ui.flush()
req.ui.log("commandfinish", "%s exited %s after %0.2f seconds\n",
msg, ret or 0, duration)
return ret