First pieces of generic templating support

[Greg Ward]

On 20 February 2012, Matt Mackall said:
> So I've set a goal of adding "generic templating", which means:
> 
> - it should be possible to use templating for all commands
> - there should be some built-in styles like JSON, XML, and pickle
> - it should be relatively painless to convert existing code
> - performance impact should be minimal when not in use
> 
> At this point I've introduced the basic interface, added a simple debug
> mode, and converted the status command. So we can now get output like
> this:
> 
> $ hg st --config ui.formatdebug=1
> status = {
>     {'status': '?', 'char': 'branches.txt'},

Hope I'm not getting distracted by something semi-relevant, but why is
the filename labelled 'char'? Wouldn't something like ... oh, I dunno
... 'filename' or 'path' make more sense here? 

        Greg
-- 
Greg Ward                                http://www.gerg.ca/
Know thyself.  If you need help, call the CIA.