chg and the schemes extension

[Yuya Nishihara]

On Mon, 10 Feb 2020 07:35:10 -0800, Marc Simpson wrote:
> I encountered some unexpected behaviour with chg this morning:
> It seems that once the command server is running, schemes added to
> ~/.hgrc are not recognised by chg.  For example, given the following
> minimal configuration:
> 
>     [extensions]
>     schemes =
> 
>     [schemes]
>     foo = http://foo.example.com/repos/
> 
> hg and chg output expand the foo scheme equivalently (this is the
> first chg run, so the command server is started):
> 
>     $ hg debugexpandscheme foo://baz
>     http://foo.example.com/repos/baz
> 
>     $ chg debugexpandscheme foo://baz
>     http://foo.example.com/repos/baz
> 
> Subsequently adding a second scheme to ~/.hgrc demonstrates the issue:
> 
>     [schemes]
>     foo = http://foo.example.com/repos/
>     bar = http://bar.example.com/repos/
> 
> where 'bar' is expanded as expected by hg, but not chg:
> 
>     $ hg debugexpandscheme bar://baz
>     http://bar.example.com/repos/baz
> 
>     $ chg debugexpandscheme bar://baz
>     bar://baz
> 
> Is this known behaviour (and working as designed)?  The above was
> tested in 5.3.

Perhaps, 'schemes' section has to be added to confighash since it touches
the globals. I'll test it tomorrow.

diff --git a/mercurial/chgserver.py b/mercurial/chgserver.py
--- a/mercurial/chgserver.py
+++ b/mercurial/chgserver.py
@@ -83,6 +83,7 @@ def _hashlist(items):
     b'eol',  # uses setconfig('eol', ...)
     b'extdiff',  # uisetup will register new commands
     b'extensions',
+    b'schemes',  # extsetup will update global hg.schemes
 ]
 
 _configsectionitems = [