compat: make enforcesinglehead() compatible with hg <= 5.1 again
aa905c52ede5 removed the default value for accountclosed that was providing compatibility for older versions of Mercurial.
--HG-- branch : stable
This instance will be upgraded to Heptapod 18.6.0 (final) on 2025-12-16 between 09:30 and 10:30 UTC+1
aa905c52ede5 removed the default value for accountclosed that was providing compatibility for older versions of Mercurial.
--HG-- branch : stable