[PATCH 4 of 4] commands: add template support for config

[Yuya Nishihara]

On Mon, 08 Aug 2016 10:54:46 -0500, Mathias De Maré wrote:
> # HG changeset patch
> # User Mathias De Maré <mathias.demare at gmail.com>
> # Date 1470324689 -7200
> #      Thu Aug 04 17:31:29 2016 +0200
> # Node ID c497d3c35883e43599d0a9f07f0894a582c4aede
> # Parent  74056050d1bd9069f0dfaed861162ee65a77032d
> commands: add template support for config
> 
> Example output:
> hg config -Tjson ui.username
> [
>  {
>   "value": "Mathias De Maré <mathias.demare at gmail.com>"
>  }
> ]
> 
> diff --git a/mercurial/commands.py b/mercurial/commands.py
> --- a/mercurial/commands.py
> +++ b/mercurial/commands.py
> @@ -1787,7 +1787,7 @@
>      [('u', 'untrusted', None, _('show untrusted configuration options')),
>       ('e', 'edit', None, _('edit user config')),
>       ('l', 'local', None, _('edit repository config')),
> -     ('g', 'global', None, _('edit global config'))],
> +     ('g', 'global', None, _('edit global config'))] + formatteropts,
>      _('[-u] [NAME]...'),
>      optionalrepo=True)
>  def config(ui, repo, *values, **opts):
> @@ -1848,6 +1848,7 @@
>                    onerr=error.Abort, errprefix=_("edit failed"))
>          return
>  
> +    fm = ui.formatter('config', opts)
>      for f in scmutil.rcpath():
>          ui.debug('read config from: %s\n' % f)
>      untrusted = bool(opts.get('untrusted'))
> @@ -1865,18 +1866,22 @@

       value = str(value).replace('\n', '\\n')

'\n' should be escaped only in plain format.

>                  if v == section:
>                      ui.debug('%s: ' %
>                               ui.configsource(section, name, untrusted))

fm.condwrite(ui.debug, 'source', ...) ?

> -                    ui.write('%s=%s\n' % (sectname, value))
> +                    fm.startitem()
> +                    fm.write('section value', '%s=%s\n', sectname, value)

sectname isn't a section. I don't know the right word, but "name" would be
better.

>                  elif v == sectname:
>                      ui.debug('%s: ' %
>                               ui.configsource(section, name, untrusted))
> -                    ui.write(value, '\n')
> +                    fm.startitem()
> +                    fm.write('value', '%s\n', value)

fm.data(...=sectname) to include both name and value.