changegroup: use a copy of hookargs when invoking the changegroup hook
addchangegroup creates a runhook function that is used to invoke the
changegroup and incoming hooks, but at the time the function is called,
the contents of hookargs associated with the transaction may have been
modified externally. For instance, bundle2 code affects it with
obsolescence markers and bookmarks info.
It also creates problems when a single transaction is used with multiple
changegroups added (as per an upcoming change), whereby the contents
of hookargs are that of after adding a latter changegroup when invoking
the hook for the first changegroup.
test that a commit clears the merge state.
$ hg init repo
$ cd repo
$ echo foo > file
$ hg commit -Am 'add file'
adding file
$ echo bar >> file
$ hg commit -Am 'append bar'
create a second head
$ hg up -C 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo baz >> file
$ hg commit -Am 'append baz'
created new head
failing merge
$ hg merge --tool=internal:fail
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
[1]
resolve -l should contain an unresolved entry
$ hg resolve -l
U file
resolving an unknown path emits a warning
$ hg resolve -m does-not-exist
arguments do not match paths that need resolving
resolve the failure
$ echo resolved > file
$ hg resolve -m file
(no more unresolved files)
$ hg commit -m 'resolved'
resolve -l should be empty
$ hg resolve -l
resolve -m should abort since no merge in progress
$ hg resolve -m
abort: resolve command not applicable when not merging
[255]
test crashed merge with empty mergestate
$ mkdir .hg/merge
$ touch .hg/merge/state
resolve -l, should be empty
$ hg resolve -l
$ cd ..