diff mercurial/localrepo.py @ 43441:88a306478556 stable

singlehead: making config item a bool again

with the use of `configsuboptions`, the main config item has become
a string (unless it's just the default value).

This makes it in particular hard to override in a cascade of HGRC files,
as we do in Heptapod to re-allow multiple heads on specific repositories
while the default behaviour is to forbid them. The added test case reflects
that use-case

--- a/mercurial/localrepo.py	Thu Nov 21 17:25:24 2019 -0500
+++ b/mercurial/localrepo.py	Wed Nov 20 19:07:02 2019 +0100
@@ -2086,11 +2086,10 @@
             tracktags(tr2)
             repo = reporef()
 
-            r = repo.ui.configsuboptions(
-                b'experimental', b'single-head-per-branch'
-            )
-            singlehead, singleheadsub = r
+            singleheadopt = (b'experimental', b'single-head-per-branch')
+            singlehead = repo.ui.configbool(*singleheadopt)
             if singlehead:
+                singleheadsub = repo.ui.configsuboptions(*singleheadopt)[1]
                 accountclosed = singleheadsub.get(
                     b"account-closed-heads", False
                 )