[PATCH 5 of 6 py3] dispatch: enforce bytes when converting boolean flags to config items

[Durham Goode]

On 3/7/17 8:25 AM, Augie Fackler wrote:
> # HG changeset patch
> # User Augie Fackler <raf at durin42.com>
> # Date 1488570207 18000
> #      Fri Mar 03 14:43:27 2017 -0500
> # Node ID 4801067dee2c77ff4e720c931d8b19cf32515beb
> # Parent  a6e8bb19707e0c7505ccfdf44f7e1b19a0f65d48
> dispatch: enforce bytes when converting boolean flags to config items
>
> This fixes --verbose on Python 3.
>
> diff --git a/mercurial/dispatch.py b/mercurial/dispatch.py
> --- a/mercurial/dispatch.py
> +++ b/mercurial/dispatch.py
> @@ -744,6 +744,8 @@ def _dispatch(req):
>          if options['verbose'] or options['debug'] or options['quiet']:
>              for opt in ('verbose', 'debug', 'quiet'):
>                  val = str(bool(options[opt]))
> +                if pycompat.ispy3:
> +                    val = val.encode('latin1')

Should we have a util function for turning str() output into bytes? Or 
event a strbytes() function?  On py2 it could just return str.  My 
encoding knowledge is approximately zero, which is why I'd love to be 
able to choose from some easy functions like `util.tobytesfromstr()` 
instead of knowing that encode('latin1') is how I get ascii bytes.