def prune(ui, repo, *revs, **opts):
"""hide changesets by marking them obsolete
Pruned changesets are obsolete with no successors. If they also have no
descendants, they are hidden (invisible to all commands).
Non-obsolete descendants of pruned changesets become "unstable". Use
:hg:`evolve` to handle this situation.
When you prune the parent of your working copy, Mercurial updates the
working copy to a non-obsolete parent.
You can use ``--succ`` to tell Mercurial that a newer version (successor)
of the pruned changeset exists. Mercurial records successor revisions in
obsolescence markers.
You can use the ``--biject`` option to specify a 1-1 mapping (bijection)
between revisions to pruned (precursor) and successor changesets. This
option may be removed in a future release (with the functionality provided
automatically).
If you specify multiple revisions in ``--succ``, you are recording a
"split" and must acknowledge it by passing ``--split``. Similarly, when you
prune multiple changesets with a single successor, you must pass the
``--fold`` option.
"""
if opts.get("keep", False):
hint = "strip-uncommit"
else:
hint = "strip-hide"
hintutil.trigger(hint)
revs = scmutil.revrange(repo, list(revs) + opts.get("rev", []))
succs = opts.get("succ", [])
bookmarks = set(opts.get("bookmark", ()))
metadata = _getmetadata(**opts)
biject = opts.get("biject")
fold = opts.get("fold")
split = opts.get("split")
options = [o for o in ("biject", "fold", "split") if opts.get(o)]
if 1 < len(options):
raise error.Abort(_("can only specify one of %s") % ", ".join(options))
if bookmarks:
revs += bookmarksmod.reachablerevs(repo, bookmarks)
if not revs:
# No revs are reachable exclusively from these bookmarks, just
# delete the bookmarks.
with repo.wlock(), repo.lock(), repo.transaction(
"prune-bookmarks") as tr:
bookmarksmod.delete(repo, tr, bookmarks)
for bookmark in sorted(bookmarks):
ui.write(_("bookmark '%s' deleted\n") % bookmark)
return 0
if not revs:
raise error.Abort(_("nothing to prune"))
wlock = lock = tr = None
try:
wlock = repo.wlock()
lock = repo.lock()
tr = repo.transaction("prune")
# defines pruned changesets
precs = []
revs.sort()
for p in revs:
cp = repo[p]
if not cp.mutable():
# note: createmarkers() would have raised something anyway
raise error.Abort(
"cannot prune immutable changeset: %s" % cp,
hint="see 'hg help phases' for details",
)
precs.append(cp)
if not precs:
raise error.Abort("nothing to prune")
# defines successors changesets
sucs = scmutil.revrange(repo, succs)
sucs.sort()
sucs = tuple(repo[n] for n in sucs)
if not biject and len(sucs) > 1 and len(precs) > 1:
msg = "Can't use multiple successors for multiple precursors"
hint = _("use --biject to mark a series as a replacement"
" for another")
raise error.Abort(msg, hint=hint)
elif biject and len(sucs) != len(precs):
msg = "Can't use %d successors for %d precursors" % (len(sucs),
len(precs))
raise error.Abort(msg)
elif (len(precs) == 1 and len(sucs) > 1) and not split:
msg = "please add --split if you want to do a split"
raise error.Abort(msg)
elif len(sucs) == 1 and len(precs) > 1 and not fold:
msg = "please add --fold if you want to do a fold"
raise error.Abort(msg)
elif biject:
relations = [(p, (s, )) for p, s in zip(precs, sucs)]
else:
relations = [(p, sucs) for p in precs]
wdp = repo["."]
if len(sucs) == 1 and len(precs) == 1 and wdp in precs:
# '.' killed, so update to the successor
newnode = sucs[0]
else:
# update to an unkilled parent
newnode = wdp
while newnode in precs or newnode.obsolete():
newnode = newnode.parents()[0]
if newnode.node() != wdp.node():
if opts.get("keep", False):
# This is largely the same as the implementation in
# strip.stripcmd(). We might want to refactor this somewhere
# common at some point.
# only reset the dirstate for files that would actually change
# between the working context and uctx
descendantrevs = repo.revs("%d::." % newnode.rev())
changedfiles = []
for rev in descendantrevs:
# blindly reset the files, regardless of what actually
# changed
changedfiles.extend(repo[rev].files())
# reset files that only changed in the dirstate too
dirstate = repo.dirstate
dirchanges = [f for f in dirstate if dirstate[f] != "n"]
changedfiles.extend(dirchanges)
repo.dirstate.rebuild(newnode.node(), newnode.manifest(),
changedfiles)
dirstate.write(tr)
else:
bookactive = repo._activebookmark
# Active bookmark that we don't want to delete (with -B option)
# we deactivate and move it before the update and reactivate it
# after
movebookmark = bookactive and not bookmarks
if movebookmark:
bookmarksmod.deactivate(repo)
changes = [(bookactive, newnode.node())]
repo._bookmarks.applychanges(repo, tr, changes)
commands.update(ui, repo, newnode.hex())
ui.status(
_("working directory now at %s\n") %
ui.label(str(newnode), "evolve.node"))
if movebookmark:
bookmarksmod.activate(repo, bookactive)
# update bookmarks
if bookmarks:
with repo.wlock(), repo.lock(), repo.transaction(
"prune-bookmarks") as tr:
bookmarksmod.delete(repo, tr, bookmarks)
for bookmark in sorted(bookmarks):
ui.write(_("bookmark '%s' deleted\n") % bookmark)
# create markers
obsolete.createmarkers(repo,
relations,
metadata=metadata,
operation="prune")
# hide nodes
visibility.remove(repo, [c.node() for c in precs])
# informs that changeset have been pruned
ui.status(_("%i changesets pruned\n") % len(precs))
for ctx in repo.set("bookmark() and %ld", precs):
# used to be:
#
# ldest = list(repo.set('max((::%d) - obsolete())', ctx))
# if ldest:
# c = ldest[0]
#
# but then revset took a lazy arrow in the knee and became much
# slower. The new forms makes as much sense and a much faster.
for dest in ctx.ancestors():
if not dest.obsolete():
updatebookmarks = common.bookmarksupdater(repo, ctx.node())
updatebookmarks(dest.node())
break
tr.close()
finally:
lockmod.release(tr, lock, wlock)
def split(ui, repo, *revs, **opts):
"""split a changeset into smaller changesets
Prompt for hunks to be selected until exhausted. Each selection of hunks
will form a separate changeset, in order from parent to child: the first
selection will form the first changeset, the second selection will form
the second changeset, and so on.
Operates on the current revision by default. Use --rev to split a given
changeset instead.
"""
newcommits = []
revarg = (list(revs) + opts.get("rev")) or ["."]
if len(revarg) != 1:
msg = _("more than one revset is given")
hnt = _(
"use either `hg split <rs>` or `hg split --rev <rs>`, not both")
raise error.Abort(msg, hint=hnt)
rev = scmutil.revsingle(repo, revarg[0])
if opts.get("no_rebase"):
torebase = ()
else:
torebase = list(
map(hex, repo.nodes("descendants(%d) - (%d)", rev, rev)))
with repo.wlock(), repo.lock():
cmdutil.bailifchanged(repo)
if torebase:
cmdutil.checkunfinished(repo)
ctx = repo[rev]
r = ctx.hex()
allowunstable = visibility.tracking(repo) or obsolete.isenabled(
repo, obsolete.allowunstableopt)
if not allowunstable:
# XXX We should check head revs
if repo.revs("(%d::) - %d", rev, rev):
raise error.Abort(
_("cannot split commit: %s not a head") % ctx)
if len(ctx.parents()) > 1:
raise error.Abort(_("cannot split merge commits"))
prev = ctx.p1()
bmupdate = common.bookmarksupdater(repo, ctx.node())
bookactive = repo._activebookmark
if bookactive is not None:
repo.ui.status(_("(leaving bookmark %s)\n") % repo._activebookmark)
bookmarks.deactivate(repo)
hg.update(repo, prev)
commands.revert(ui, repo, rev=r, all=True)
def haschanges():
modified, added, removed, deleted = repo.status()[:4]
return modified or added or removed or deleted
# We need to detect the case where the user selects all remaining
# changes, as that will end the split. That's the commit we want to
# mark as the result of the split. To do this, wrap the recordfilter
# function and compare the output to see if it contains all the
# originalchunks.
shouldrecordmutation = [False]
def mutinfo(extra):
if shouldrecordmutation[0]:
return mutation.record(
repo,
extra,
[ctx.node()],
"split",
splitting=[c.node() for c in newcommits],
)
def recordfilter(ui, originalchunks, operation=None):
chunks, newopts = cmdutil.recordfilter(ui, originalchunks,
operation)
if cmdutil.comparechunks(chunks, originalchunks):
shouldrecordmutation[0] = True
return chunks, newopts
msg = ("HG: This is the original pre-split commit message. "
"Edit it as appropriate.\n\n")
msg += ctx.description()
opts["message"] = msg
opts["edit"] = True
opts["_commitmutinfofunc"] = mutinfo
try:
while haschanges():
pats = ()
with repo.transaction("split"):
cmdutil.dorecord(ui, repo, commands.commit, "commit",
False, recordfilter, *pats, **opts)
# TODO: Does no seem like the best way to do this
# We should make dorecord return the newly created commit
newcommits.append(repo["."])
if haschanges():
if ui.prompt("Done splitting? [yN]", default="n") == "y":
shouldrecordmutation[0] = True
with repo.transaction("split"):
commands.commit(ui, repo, **opts)
newcommits.append(repo["."])
break
else:
ui.status(_("no more change to split\n"))
except Exception:
# Rollback everything
hg.updaterepo(repo, r, True) # overwrite=True
if newcommits:
visibility.remove(repo, [c.node() for c in newcommits])
if bookactive is not None:
bookmarks.activate(repo, bookactive)
raise
if newcommits:
phabdiffs = {}
for c in newcommits:
phabdiff = diffprops.parserevfromcommitmsg(
repo[c].description())
if phabdiff:
phabdiffs.setdefault(phabdiff, []).append(c)
if any(len(commits) > 1 for commits in phabdiffs.values()):
hintutil.trigger("split-phabricator",
ui.config("split", "phabricatoradvice"))
tip = repo[newcommits[-1]]
with repo.transaction("post-split"):
bmupdate(tip.node())
if bookactive is not None:
bookmarks.activate(repo, bookactive)
if obsolete.isenabled(repo, obsolete.createmarkersopt):
obsolete.createmarkers(repo, [(repo[r], newcommits)],
operation="split")
if torebase:
rebaseopts = {"dest": "_destrestack(SRC)", "rev": torebase}
rebase.rebase(ui, repo, **rebaseopts)
unfi = repo
with repo.transaction("post-split-hide"):
visibility.remove(repo, [unfi[r].node()])
def _backupactivebookmark(repo):
activebookmark = repo._activebookmark
if activebookmark:
bookmarks.deactivate(repo)
return activebookmark