histedit: improve roll action integration with fold
Previously the fold action would inspect it's class to figure out if it was a
rollup or not. This was hacky. Now that finishfold is inside the fold class,
let's modify it to check a function (which roll can override) to determine if it
should be prompting for a commit message.
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::)
# those two `roots(...)` inputs are close to what phase movement use.
roots((tip~100::) - (tip~100::tip))
roots((0::) - (0::tip))
::p1(p1(tip))::
public()
:10000 and public()
draft()
:10000 and draft()
max(::(tip~20) - obsolete())
roots((0:tip)::)
(not public() - obsolete())
(_intlist('20000\x0020001')) and merge()
parents(20000)
(20000::) - (20000)
# The one below is used by rebase
(children(ancestor(tip~5, tip)) and ::(tip~5))::