[PATCH] revset: don't error out if tokens parse as existing symbols

[Jordi Gutiérrez Hermoso]

On Sun, 2015-05-03 at 13:35 +0900, Yuya Nishihara wrote:
> See
> http://selenic.com/repo/hg/file/e9edd53770fb/mercurial/scmutil.py#l757
> 
> % hg log -r date
> hg: parse error: can't use date here
> % hg book date
> % hg log -r date
> changeset:   -1:000000000000
> bookmark:    date
> tag:         tip
> user:        
> date:        Thu Jan 01 00:00:00 1970 +0000
> % hg debugrevspec date
> hg: parse error: can't use date here

Thank you, I see my error now. I have prepared a revised change.