memctx: substate needs to be {} instead of None
Setting substate to None was an oversight in 7cfd94ec5d30 and this patch
corrects it by setting substate to an empty dictionary which matches what
subrepo code expects.
all()
draft()
::tip
draft() and ::tip
::tip and draft()
0::tip
roots(0::tip)
author(lmoscovicz)
author(mpm)
author(lmoscovicz) or author(mpm)
author(mpm) or author(lmoscovicz)
tip:0
max(tip:0)
min(0:tip)
0::
min(0::)
roots((tip~100::) - (tip~100::tip))
::p1(p1(tip))::
public()
:10000 and public()
draft()
:10000 and draft()
max(::(tip~20) - obsolete())