Mercurial 4.7 (2018-08-01)

Mercurial 4.7 (2018-08-01)#

Mercurial 4.7 release#

New Features#

  • ‘hg graft’ now has a ‘–stop’ flag to stop interrupted graft.

  • ‘hg graft’ now has an ‘–abort’ flag which aborts the interrupted graft and rollbacks to state before the graft.

  • ‘hg graft’ now has a ‘–no-commit’ mode (Bts:issue5631)

  • ‘hg rebase’ now supports ‘–confirm’ and ‘–dry-run’ flags.

  • ‘hg export’ now has a ‘-B/–bookmark’ option to select a bookmarked branch.

  • The ‘acl’ extension now has support for bookmarks as well as branches.

  • ‘word-diff’ option is now officially supported, and enabled by ui.tweakdefaults or can be enabled by setting diff.word-diff=True.

  • The ‘optimize-delta-parent-choice’ is now enabled by default. It makes storing merge changesets more efficient by checking against which parent to make a delta.

  • ‘sparse-revlog’ option is now available. This option allows for a better storage and compression of the manifest for very big repositories at a minimal cost on day-to-day commands.

Backwards Compatibility Changes#

  • The fileset expression may include untracked files by default. Use “tracked()” to explicitly filter out files not existing at the context revision.

  • graft: reuse –user, –date, a –log values in ‘hg graft –continue’ (BC)

  • revset: fix heads() order to always follow the input set (BC)

  • revset: make id() an empty set for ambiguous nodeid (BC)

  • revset: make id() to resolve node id prefix in unfiltered repo (BC)

  • templater: consistently join() string-like object per character (BC)

Bug Fixes#

  • dispatch: fix exit code of unhandled exception recorded in blackbox log

  • merge: mark file gets as not thread safe (Bts:issue5933)

  • patch: don’t separate \r and \n when colorizing diff output

  • sparse-revlog: implement algorithm to write sparse delta chains (Bts:issue5480)

  • obsolete: store user name and note in UTF-8 (Bts:issue5754) (BC)

  • phases: remove excessive optimization from newheads() (Bts:issue5939)

  • unlinkpath: make empty directory removal optional (Bts:issue5901) (Bts:issue5826)

  • revlog: suggest other parent when a parent was refused for a delta (Bts:issue5481)

  • templatefuncs: show hint if extdata source is evaluated to empty (Bts:issue5843)

  • bookmarks: cache reverse mapping (Bts:issue5868)

  • hgweb: strip trailing ‘/’ in apppath before appending ‘/static/’ (Bts:issue5943)

Performance improvements#

  • fncache: avoid loading the filename cache when not actually modifying it. This makes commits to existing files faster.

New experimental features#

  • grep: ‘–all-files -r “wdir()”’ to search working-directory files, which is the default if tweakdefaults is on.

Other notable features#

  • annotate, files: automatically populate fields referenced from template

  • bookmarks, files, status, tags: add support for log-like template keywords and functions

  • grep: deprecates ‘–all’ flag in favor of ‘–diff’

  • serve: add –print-url option

  • shelve: pick the most recent shelve if none specified for –patch/–stat

  • status: add a config knob for setting default of –terse

API Changes#

  • repo[x] is now more strict about its input, see https://www.mercurial-scm.org/repo/hg/file/4.6/mercurial/context.py#l380

  • “sshserver()” no longer sets stdin and stdout to binary mode.

  • New context manager “ui.uninterruptable()” to mark portions of a command as potentially unsafe places to interrupt Mercurial with Control-C or similar.

  • New ui.makeprogress() that makes it easier to update progress.

  • changegroup: use progress helper in apply() (API)

  • cmdutil: drop deprecated log helper methods (API)

  • cmdutil: drop deprecated precursor of registrar.command (API)

  • cmdutil: remove deprecated _revertprefetch code (API)

  • context: drop support for looking up context by ambiguous changeid (API)

  • context: explicitly take diffopts in ‘context.diff’ (API)

  • context: make workingctx.matches() filter our removed files (API)

  • demandimport: make module ignores a set (API)

  • fileset: remove callexisting flag and mctx.existing() (API)

  • fileset: restrict getfileset() to not return a computed set (API)

  • merge: drop support for using updateresults as tuples (API)

  • obsolete: explode if metadata contains invalid UTF-8 sequence (API)

  • pycompat: export queue module instead of symbols in module (API)

  • revlog: do inclusive descendant testing (API)

  • revlog: replace descendant(b, a) by isdescendantrev(a, b) (API)

  • scmutil: move repair.stripbmrevset as scmutil.bookmarkrevs (API)

  • scmutil: remove deprecated revpairnodes method (API)

  • shortest: don’t keep checking for longer prefix if node doesn’t exist (API)

  • templatekw: drop deprecated showlist() and showdict() (API)

  • templater: drop extension point of engine classes (API)

  • update: use context manager for config override (API)

  • util: drop deprecated forwarding to dateutil, procutil, and stringutil (API)

More notes to sort into the above#

commands#

core#

  • cmdutil: drop deprecated log helper methods (API)

  • cmdutil: drop deprecated precursor of registrar.command (API)

  • cmdutil: remove deprecated _revertprefetch code (API)

  • context: also accept diff option directly

  • context: drop support for looking up context by ambiguous changeid (API)

  • context: explicitly take diffopts in ‘context.diff’ (API)

  • context: make workingctx.matches() filter our removed files (API)

  • context: no longer accept diff options as dictionnary

  • dispatch: mask negative exit code recorded in blackbox log

  • dispatch: unify handling of None returned by a command function

  • filelog: don’t crash on invalid copy metadata (Bts:issue5748)

  • hook: add support for disabling the shell to native command translation

  • hook: disable the shell to native command translation by default

  • revlog: _segmentspan computes the byte span of a segment

  • revlog: add function to slice chunk down to a given size

  • revlog: delete isdescendantrev() in favor of isancestorrev()

  • revlog: disallow setting uncompressed length to None

  • revlog: do inclusive descendant testing (API)

  • revlog: don’t say “not found” on internal error

  • revlog: early return in _slicechunk when density is already good

  • revlog: early return in _slicechunk when span is already small enough

  • revlog: efficient implementation of ‘descendant’

  • revlog: enforce chunk slicing down to a certain size

  • revlog: handle error from node lookup

  • revlog: handle errors from index_node() in nt_insert() and index_slice_del()

  • revlog: introduce a tiny mock of a revlog class

  • revlog: isgooddeltainfo takes the whole revinfo object

  • revlog: make chainbase cache its result for the correct revision

  • revlog: make getcandidaterevs more consistent about updating tested revs set

  • revlog: make isdescendantrev(a, b) check if a < b

  • revlog: make variable name ‘d’ more explicit in _isgooddeltainfo

  • revlog: postprocess chunk to slice them down to a certain size

  • revlog: replace descendant(b, a) by isdescendantrev(a, b) (API)

  • revlog: reuse ‘descendant’ implemention in ‘isancestor’

  • revlog: use node tree (native code) for shortest() calculation

  • revlog: use radix tree also for matching keys shorter than 4 hex digits

  • revset: add partial support for ancestor(wdir())

  • revset: fix heads() order to always follow the input set (BC)

  • revset: make id() an empty set for ambiguous nodeid (BC)

  • revset: pass in lookup function to matchany() (Bts:issue5879)

  • revset: use resolvehexnodeidprefix() in id() predicate (BC)

  • templater: make date wrapper support dot/map operations

  • transaction-summary: show phase changes statistics in pull/unbundle

  • worker: support more return types in posix worker

extensions#

  • convert: don’t pass –no-files to “darcs show repo” command

  • histedit: add history-editing-backup config option

  • shelve: use more accurate description in conflict marker

hgweb#

  • hgweb: propagate http headers from ErrorResponse for web interface commands

unsorted#

  • aggressivemergedeltas: enabled the option by default

  • filemerge: support specifying a python function to custom merge-tools

  • fuzzutil: make it possible to use absl when C++17 isn’t supported

  • mpatch: introduce a safeadd() helper to work around UB int overflow

  • mpatch: introduce a safesub() helper as well

  • phase: clarify the message about movement on command changeset

  • remotenames: enable the storage config option if extension is enabled

  • sparse-revlog: new requirement enabled with format.sparse-revlog

  • zstandard: pull in bug fixes from upstream 0.9.1 release (Bts:issue5884)