rewriteutil: replace "null changeset" by "the null revision" in error message

The evolve extension uses "the null revision" and we seem to use that
term much more frequently in core too.

Differential Revision: https://phab.mercurial-scm.org/D10514

mercurial/rewriteutil.py

@@ -1,138 +1,138 b''
 # rewriteutil.py - utility functions for rewriting changesets
 #
 # Copyright 2017 Octobus <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import re
 
 from .i18n import _
 from .node import (
     hex,
     nullrev,
 )
 
 from . import (
     error,
     obsolete,
     obsutil,
     revset,
     scmutil,
 )
 
 
 NODE_RE = re.compile(br'\b[0-9a-f]{6,64}\b')
 
 
 def precheck(repo, revs, action=b'rewrite'):
     """check if revs can be rewritten
     action is used to control the error message.
 
     Make sure this function is called after taking the lock.
     """
     if nullrev in revs:
-        msg = _(b"cannot %s null changeset") % action
+        msg = _(b"cannot %s the null revision") % action
         hint = _(b"no changeset checked out")
         raise error.InputError(msg, hint=hint)
 
     if len(repo[None].parents()) > 1:
         raise error.StateError(_(b"cannot %s while merging") % action)
 
     publicrevs = repo.revs(b'%ld and public()', revs)
     if publicrevs:
         msg = _(b"cannot %s public changesets") % action
         hint = _(b"see 'hg help phases' for details")
         raise error.InputError(msg, hint=hint)
 
     newunstable = disallowednewunstable(repo, revs)
     if newunstable:
         raise error.InputError(_(b"cannot %s changeset with children") % action)
 
 
 def disallowednewunstable(repo, revs):
     """Checks whether editing the revs will create new unstable changesets and
     are we allowed to create them.
 
     To allow new unstable changesets, set the config:
         `experimental.evolution.allowunstable=True`
     """
     allowunstable = obsolete.isenabled(repo, obsolete.allowunstableopt)
     if allowunstable:
         return revset.baseset()
     return repo.revs(b"(%ld::) - %ld", revs, revs)
 
 
 def skip_empty_successor(ui, command):
     empty_successor = ui.config(b'rewrite', b'empty-successor')
     if empty_successor == b'skip':
         return True
     elif empty_successor == b'keep':
         return False
     else:
         raise error.ConfigError(
             _(
                 b"%s doesn't know how to handle config "
                 b"rewrite.empty-successor=%s (only 'skip' and 'keep' are "
                 b"supported)"
             )
             % (command, empty_successor)
         )
 
 
 def update_hash_refs(repo, commitmsg, pending=None):
     """Replace all obsolete commit hashes in the message with the current hash.
 
     If the obsolete commit was split or is divergent, the hash is not replaced
     as there's no way to know which successor to choose.
 
     For commands that update a series of commits in the current transaction, the
     new obsolete markers can be considered by setting ``pending`` to a mapping
     of ``pending[oldnode] = [successor_node1, successor_node2,..]``.
     """
     if not pending:
         pending = {}
     cache = {}
     hashes = re.findall(NODE_RE, commitmsg)
     unfi = repo.unfiltered()
     for h in hashes:
         fullnode = scmutil.resolvehexnodeidprefix(unfi, h)
         if fullnode is None:
             continue
         ctx = unfi[fullnode]
         if not ctx.obsolete():
             successors = pending.get(fullnode)
             if successors is None:
                 continue
             # obsutil.successorssets() returns a list of list of nodes
             successors = [successors]
         else:
             successors = obsutil.successorssets(repo, ctx.node(), cache=cache)
 
         # We can't make any assumptions about how to update the hash if the
         # cset in question was split or diverged.
         if len(successors) == 1 and len(successors[0]) == 1:
             successor = successors[0][0]
             if successor is not None:
                 newhash = hex(successor)
                 commitmsg = commitmsg.replace(h, newhash[: len(h)])
             else:
                 repo.ui.note(
                     _(
                         b'The stale commit message reference to %s could '
                         b'not be updated\n(The referenced commit was dropped)\n'
                     )
                     % h
                 )
         else:
             repo.ui.note(
                 _(
                     b'The stale commit message reference to %s could '
                     b'not be updated\n'
                 )
                 % h
             )
 
     return commitmsg

tests/test-uncommit.t

@@ -1,596 +1,596 b''
 Test uncommit - set up the config
 
   $ cat >> $HGRCPATH <<EOF
   > [experimental]
   > evolution.createmarkers=True
   > evolution.allowunstable=True
   > [extensions]
   > uncommit =
   > drawdag=$TESTDIR/drawdag.py
   > EOF
 
 Build up a repo
 
   $ hg init repo
   $ cd repo
   $ hg bookmark foo
 
 Help for uncommit
 
   $ hg help uncommit
   hg uncommit [OPTION]... [FILE]...
   
   uncommit part or all of a local changeset
   
       This command undoes the effect of a local commit, returning the affected
       files to their uncommitted state. This means that files modified or
       deleted in the changeset will be left unchanged, and so will remain
       modified in the working directory.
   
       If no files are specified, the commit will be pruned, unless --keep is
       given.
   
   (use 'hg help -e uncommit' to show help for the uncommit extension)
   
   options ([+] can be repeated):
   
       --keep                     allow an empty commit after uncommitting
       --allow-dirty-working-copy allow uncommit with outstanding changes
    -n --note TEXT                store a note on uncommit
    -I --include PATTERN [+]      include names matching the given patterns
    -X --exclude PATTERN [+]      exclude names matching the given patterns
    -m --message TEXT             use text as commit message
    -l --logfile FILE             read commit message from file
    -d --date DATE                record the specified date as commit date
    -u --user USER                record the specified user as committer
    -D --currentdate              record the current date as commit date
    -U --currentuser              record the current user as committer
   
   (some details hidden, use --verbose to show complete help)
 
 Uncommit with no commits should fail
 
   $ hg uncommit
-  abort: cannot uncommit null changeset
+  abort: cannot uncommit the null revision
   (no changeset checked out)
   [10]
 
 Create some commits
 
   $ touch files
   $ hg add files
   $ for i in a ab abc abcd abcde; do echo $i > files; echo $i > file-$i; hg add file-$i; hg commit -m "added file-$i"; done
   $ ls -A
   .hg
   file-a
   file-ab
   file-abc
   file-abcd
   file-abcde
   files
 
   $ hg log -G -T '{rev}:{node} {desc}' --hidden
   @  4:6c4fd43ed714e7fcd8adbaa7b16c953c2e985b60 added file-abcde
   |
   o  3:6db330d65db434145c0b59d291853e9a84719b24 added file-abcd
   |
   o  2:abf2df566fc193b3ac34d946e63c1583e4d4732b added file-abc
   |
   o  1:69a232e754b08d568c4899475faf2eb44b857802 added file-ab
   |
   o  0:3004d2d9b50883c1538fc754a3aeb55f1b4084f6 added file-a
   
 Simple uncommit off the top, also moves bookmark
 
   $ hg bookmark
    * foo                       4:6c4fd43ed714
   $ hg uncommit
   $ hg status
   M files
   A file-abcde
   $ hg bookmark
    * foo                       3:6db330d65db4
 
   $ hg log -G -T '{rev}:{node} {desc}' --hidden
   x  4:6c4fd43ed714e7fcd8adbaa7b16c953c2e985b60 added file-abcde
   |
   @  3:6db330d65db434145c0b59d291853e9a84719b24 added file-abcd
   |
   o  2:abf2df566fc193b3ac34d946e63c1583e4d4732b added file-abc
   |
   o  1:69a232e754b08d568c4899475faf2eb44b857802 added file-ab
   |
   o  0:3004d2d9b50883c1538fc754a3aeb55f1b4084f6 added file-a
   
 
 Recommit
 
   $ hg commit -m 'new change abcde'
   $ hg status
   $ hg heads -T '{rev}:{node} {desc}'
   5:0c07a3ccda771b25f1cb1edbd02e683723344ef1 new change abcde (no-eol)
 
 Uncommit of non-existent and unchanged files aborts
   $ hg uncommit nothinghere
   abort: cannot uncommit "nothinghere"
   (file does not exist)
   [10]
   $ hg status
   $ hg uncommit file-abc
   abort: cannot uncommit "file-abc"
   (file was not changed in working directory parent)
   [10]
   $ hg status
 
 Try partial uncommit, also moves bookmark
 
   $ hg bookmark
    * foo                       5:0c07a3ccda77
   $ hg uncommit files
   $ hg status
   M files
   $ hg bookmark
    * foo                       6:3727deee06f7
   $ hg heads -T '{rev}:{node} {desc}'
   6:3727deee06f72f5ffa8db792ee299cf39e3e190b new change abcde (no-eol)
   $ hg log -r . -p -T '{rev}:{node} {desc}'
   6:3727deee06f72f5ffa8db792ee299cf39e3e190b new change abcdediff -r 6db330d65db4 -r 3727deee06f7 file-abcde
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file-abcde	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +abcde
   
   $ hg log -G -T '{rev}:{node} {desc}' --hidden
   @  6:3727deee06f72f5ffa8db792ee299cf39e3e190b new change abcde
   |
   | x  5:0c07a3ccda771b25f1cb1edbd02e683723344ef1 new change abcde
   |/
   | x  4:6c4fd43ed714e7fcd8adbaa7b16c953c2e985b60 added file-abcde
   |/
   o  3:6db330d65db434145c0b59d291853e9a84719b24 added file-abcd
   |
   o  2:abf2df566fc193b3ac34d946e63c1583e4d4732b added file-abc
   |
   o  1:69a232e754b08d568c4899475faf2eb44b857802 added file-ab
   |
   o  0:3004d2d9b50883c1538fc754a3aeb55f1b4084f6 added file-a
   
   $ hg commit -m 'update files for abcde'
 
 Uncommit with dirty state
 
   $ echo "foo" >> files
   $ cat files
   abcde
   foo
   $ hg status
   M files
   $ hg uncommit
   abort: uncommitted changes
   (requires --allow-dirty-working-copy to uncommit)
   [20]
   $ hg uncommit files
   abort: uncommitted changes
   (requires --allow-dirty-working-copy to uncommit)
   [20]
   $ cat files
   abcde
   foo
   $ hg commit --amend -m "files abcde + foo"
 
 Testing the 'experimental.uncommitondirtywdir' config
 
   $ echo "bar" >> files
   $ hg uncommit
   abort: uncommitted changes
   (requires --allow-dirty-working-copy to uncommit)
   [20]
   $ hg uncommit --config experimental.uncommitondirtywdir=True
   $ hg commit -m "files abcde + foo"
 
 Uncommit in the middle of a stack, does not move bookmark
 
   $ hg checkout '.^^^'
   1 files updated, 0 files merged, 2 files removed, 0 files unresolved
   (leaving bookmark foo)
   $ hg log -r . -p -T '{rev}:{node} {desc}'
   2:abf2df566fc193b3ac34d946e63c1583e4d4732b added file-abcdiff -r 69a232e754b0 -r abf2df566fc1 file-abc
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file-abc	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +abc
   diff -r 69a232e754b0 -r abf2df566fc1 files
   --- a/files	Thu Jan 01 00:00:00 1970 +0000
   +++ b/files	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -ab
   +abc
   
   $ hg bookmark
      foo                       9:48e5bd7cd583
   $ hg uncommit
   3 new orphan changesets
   $ hg status
   M files
   A file-abc
   $ hg heads -T '{rev}:{node} {desc}'
   9:48e5bd7cd583eb24164ef8b89185819c84c96ed7 files abcde + foo (no-eol)
   $ hg bookmark
      foo                       9:48e5bd7cd583
   $ hg commit -m 'new abc'
   created new head
 
 Partial uncommit in the middle, does not move bookmark
 
   $ hg checkout '.^'
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg log -r . -p -T '{rev}:{node} {desc}'
   1:69a232e754b08d568c4899475faf2eb44b857802 added file-abdiff -r 3004d2d9b508 -r 69a232e754b0 file-ab
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file-ab	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +ab
   diff -r 3004d2d9b508 -r 69a232e754b0 files
   --- a/files	Thu Jan 01 00:00:00 1970 +0000
   +++ b/files	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -a
   +ab
   
   $ hg bookmark
      foo                       9:48e5bd7cd583
   $ hg uncommit file-ab
   1 new orphan changesets
   $ hg status
   A file-ab
 
   $ hg heads -T '{rev}:{node} {desc}\n'
   11:8eb87968f2edb7f27f27fe676316e179de65fff6 added file-ab
   10:5dc89ca4486f8a88716c5797fa9f498d13d7c2e1 new abc
   9:48e5bd7cd583eb24164ef8b89185819c84c96ed7 files abcde + foo
 
   $ hg bookmark
      foo                       9:48e5bd7cd583
   $ hg commit -m 'update ab'
   $ hg status
   $ hg heads -T '{rev}:{node} {desc}\n'
   12:f21039c59242b085491bb58f591afc4ed1c04c09 update ab
   10:5dc89ca4486f8a88716c5797fa9f498d13d7c2e1 new abc
   9:48e5bd7cd583eb24164ef8b89185819c84c96ed7 files abcde + foo
 
   $ hg log -G -T '{rev}:{node} {desc}' --hidden
   @  12:f21039c59242b085491bb58f591afc4ed1c04c09 update ab
   |
   o  11:8eb87968f2edb7f27f27fe676316e179de65fff6 added file-ab
   |
   | *  10:5dc89ca4486f8a88716c5797fa9f498d13d7c2e1 new abc
   | |
   | | *  9:48e5bd7cd583eb24164ef8b89185819c84c96ed7 files abcde + foo
   | | |
   | | | x  8:84beeba0ac30e19521c036e4d2dd3a5fa02586ff files abcde + foo
   | | |/
   | | | x  7:0977fa602c2fd7d8427ed4e7ee15ea13b84c9173 update files for abcde
   | | |/
   | | *  6:3727deee06f72f5ffa8db792ee299cf39e3e190b new change abcde
   | | |
   | | | x  5:0c07a3ccda771b25f1cb1edbd02e683723344ef1 new change abcde
   | | |/
   | | | x  4:6c4fd43ed714e7fcd8adbaa7b16c953c2e985b60 added file-abcde
   | | |/
   | | *  3:6db330d65db434145c0b59d291853e9a84719b24 added file-abcd
   | | |
   | | x  2:abf2df566fc193b3ac34d946e63c1583e4d4732b added file-abc
   | |/
   | x  1:69a232e754b08d568c4899475faf2eb44b857802 added file-ab
   |/
   o  0:3004d2d9b50883c1538fc754a3aeb55f1b4084f6 added file-a
   
 Uncommit with draft parent
 
   $ hg uncommit
   $ hg phase -r .
   11: draft
   $ hg commit -m 'update ab again'
 
 Phase is preserved
 
   $ hg uncommit --keep --config phases.new-commit=secret
   note: keeping empty commit
   $ hg phase -r .
   14: draft
   $ hg commit --amend -m 'update ab again'
 
 Uncommit with public parent
 
   $ hg phase -p "::.^"
   $ hg uncommit
   $ hg phase -r .
   11: public
 
 Partial uncommit with public parent
 
   $ echo xyz > xyz
   $ hg add xyz
   $ hg commit -m "update ab and add xyz"
   $ hg uncommit xyz
   $ hg status
   A xyz
   $ hg phase -r .
   17: draft
   $ hg phase -r ".^"
   11: public
 
 Uncommit with --keep or experimental.uncommit.keep leaves an empty changeset
 
   $ cd $TESTTMP
   $ hg init repo1
   $ cd repo1
   $ hg debugdrawdag <<'EOS'
   > Q
   > |
   > P
   > EOS
   $ hg up Q -q
   $ hg uncommit --keep
   note: keeping empty commit
   $ hg log -G -T '{desc} FILES: {files}'
   @  Q FILES:
   |
   | x  Q FILES: Q
   |/
   o  P FILES: P
   
   $ cat >> .hg/hgrc <<EOF
   > [experimental]
   > uncommit.keep=True
   > EOF
   $ hg ci --amend
   $ hg uncommit
   note: keeping empty commit
   $ hg log -G -T '{desc} FILES: {files}'
   @  Q FILES:
   |
   | x  Q FILES: Q
   |/
   o  P FILES: P
   
   $ hg status
   A Q
   $ hg ci --amend
   $ hg uncommit --no-keep
   $ hg log -G -T '{desc} FILES: {files}'
   x  Q FILES: Q
   |
   @  P FILES: P
   
   $ hg status
   A Q
   $ cd ..
   $ rm -rf repo1
 
 Testing uncommit while merge
 
   $ hg init repo2
   $ cd repo2
 
 Create some history
 
   $ touch a
   $ hg add a
   $ for i in 1 2 3; do echo $i > a; hg commit -m "a $i"; done
   $ hg checkout 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ touch b
   $ hg add b
   $ for i in 1 2 3; do echo $i > b; hg commit -m "b $i"; done
   created new head
   $ hg log -G -T '{rev}:{node} {desc}' --hidden
   @  5:2cd56cdde163ded2fbb16ba2f918c96046ab0bf2 b 3
   |
   o  4:c3a0d5bb3b15834ffd2ef9ef603e93ec65cf2037 b 2
   |
   o  3:49bb009ca26078726b8870f1edb29fae8f7618f5 b 1
   |
   | o  2:990982b7384266e691f1bc08ca36177adcd1c8a9 a 3
   | |
   | o  1:24d38e3cf160c7b6f5ffe82179332229886a6d34 a 2
   |/
   o  0:ea4e33293d4d274a2ba73150733c2612231f398c a 1
   
 
 Add and expect uncommit to fail on both merge working dir and merge changeset
 
   $ hg merge 2
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
   $ hg uncommit
   abort: outstanding uncommitted merge
   (requires --allow-dirty-working-copy to uncommit)
   [20]
 
   $ hg uncommit --config experimental.uncommitondirtywdir=True
   abort: cannot uncommit while merging
   [20]
 
   $ hg status
   M a
   $ hg commit -m 'merge a and b'
 
   $ hg uncommit
   abort: cannot uncommit merge changeset
   [10]
 
   $ hg status
   $ hg log -G -T '{rev}:{node} {desc}' --hidden
   @    6:c03b9c37bc67bf504d4912061cfb527b47a63c6e merge a and b
   |\
   | o  5:2cd56cdde163ded2fbb16ba2f918c96046ab0bf2 b 3
   | |
   | o  4:c3a0d5bb3b15834ffd2ef9ef603e93ec65cf2037 b 2
   | |
   | o  3:49bb009ca26078726b8870f1edb29fae8f7618f5 b 1
   | |
   o |  2:990982b7384266e691f1bc08ca36177adcd1c8a9 a 3
   | |
   o |  1:24d38e3cf160c7b6f5ffe82179332229886a6d34 a 2
   |/
   o  0:ea4e33293d4d274a2ba73150733c2612231f398c a 1
   
 
 Rename a->b, then remove b in working copy. Result should remove a.
 
   $ hg co -q 0
   $ hg mv a b
   $ hg ci -qm 'move a to b'
   $ hg rm b
   $ hg uncommit --config experimental.uncommitondirtywdir=True
   $ hg st --copies
   R a
   $ hg revert a
 
 Rename a->b, then rename b->c in working copy. Result should rename a->c.
 
   $ hg co -q 0
   $ hg mv a b
   $ hg ci -qm 'move a to b'
   $ hg mv b c
   $ hg uncommit --config experimental.uncommitondirtywdir=True
   $ hg st --copies
   A c
     a
   R a
   $ hg revert a
   $ hg forget c
   $ rm c
 
 Copy a->b1 and a->b2, then rename b1->c in working copy. Result should copy a->b2 and a->c.
 
   $ hg co -q 0
   $ hg cp a b1
   $ hg cp a b2
   $ hg ci -qm 'move a to b1 and b2'
   $ hg mv b1 c
   $ hg uncommit --config experimental.uncommitondirtywdir=True
   $ hg st --copies
   A b2
     a
   A c
     a
   $ cd ..
 
 --allow-dirty-working-copy should also work on a dirty PATH
 
   $ hg init issue5977
   $ cd issue5977
   $ echo 'super critical info!' > a
   $ hg ci -Am 'add a'
   adding a
   $ echo 'foo' > b
   $ hg add b
   $ hg status
   A b
   $ hg uncommit a
   note: keeping empty commit
   $ cat a
   super critical info!
   $ hg log
   changeset:   1:656ba143d384
   tag:         tip
   parent:      -1:000000000000
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add a
   
   $ hg ci -Am 'add b'
   $ echo 'foo bar' > b
   $ hg uncommit b
   abort: uncommitted changes
   (requires --allow-dirty-working-copy to uncommit)
   [20]
   $ hg uncommit --allow-dirty-working-copy b
   $ hg log
   changeset:   3:30fa958635b2
   tag:         tip
   parent:      1:656ba143d384
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add b
   
   changeset:   1:656ba143d384
   parent:      -1:000000000000
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add a
   
 Removes can be uncommitted
 
   $ hg ci -m 'modified b'
   $ hg rm b
   $ hg ci -m 'remove b'
   $ hg uncommit b
   note: keeping empty commit
   $ hg status
   R b
 
 Uncommitting a directory won't run afoul of the checks that an explicit file
 can be uncommitted.
 
   $ mkdir dir
   $ echo 1 > dir/file.txt
   $ hg ci -Aqm 'add file in directory'
   $ hg uncommit dir -m 'uncommit with message' -u 'different user' \
   >                 -d 'Jun 30 12:12:12 1980 +0000'
   $ hg status
   A dir/file.txt
   $ hg log -r .
   changeset:   8:b4dd26dc42e0
   tag:         tip
   parent:      6:2278a4c24330
   user:        different user
   date:        Mon Jun 30 12:12:12 1980 +0000
   summary:     uncommit with message
   
 Bad option combinations
 
   $ hg rollback -q --config ui.rollback=True
   $ hg uncommit -U --user 'user'
   abort: cannot specify both --user and --currentuser
   [10]
   $ hg uncommit -D --date today
   abort: cannot specify both --date and --currentdate
   [10]
 
 `uncommit <dir>` and `cd <dir> && uncommit .` behave the same...
 
   $ echo 2 > dir/file2.txt
   $ hg ci -Aqm 'add file2 in directory'
   $ hg uncommit dir
   note: keeping empty commit
   $ hg status
   A dir/file2.txt
 
   $ hg rollback -q --config ui.rollback=True
   $ cd dir
   $ hg uncommit . -n 'this is a note'
   note: keeping empty commit
   $ hg status
   A dir/file2.txt
   $ cd ..
 
 ... and errors out the same way when nothing can be uncommitted
 
   $ hg rollback -q --config ui.rollback=True
   $ mkdir emptydir
   $ hg uncommit emptydir
   abort: cannot uncommit "emptydir"
   (file was untracked in working directory parent)
   [10]
 
   $ cd emptydir
   $ hg uncommit .
   abort: cannot uncommit "emptydir"
   (file was untracked in working directory parent)
   [10]
   $ hg status
   $ cd ..