commit: no longer allow empty commit with the 'force' argument (API)
The new way to allow empty commit is to temporarily set the
'ui.allowemptycommit' config option.
allowemptyback = repo.ui.backupconfig('ui', 'allowemptycommit')
try:
repo.ui.setconfig('ui', 'allowemptycommit', True)
repo.commit(...)
finally:
repo.ui.restoreconfig(allowemptyback)
All known uses of force for allowing empty commits have been removed, so let's
remove it from the allowemptycommits condition.
http://mercurial.selenic.com/bts/issue619
$ hg init
$ echo a > a
$ hg ci -Ama
adding a
$ echo b > b
$ hg branch b
marked working directory as branch b
(branches are permanent and global, did you want a bookmark?)
$ hg ci -Amb
adding b
$ hg co -C 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
Fast-forward:
$ hg merge b
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg ci -Ammerge
Bogus fast-forward should fail:
$ hg merge b
abort: merging with a working directory ancestor has no effect
[255]
Even with strange revset (issue4465)
$ hg merge ::.
abort: merging with a working directory ancestor has no effect
[255]