Mercurial 5.1 (2019-07-28)#

Mercurial 5.1 release#

This is an overview of the 5.1 release.

New config commands.commit.post-status shows status after successful commit.
hg root now has templating support, including support for showing where a repo share’s source is. See hg help -v root for details.
New --force-close-branch flag for hg commit to forcibly close branch from a non-head changeset.
The curses-based interface for commands like hg commit -i now supports a range-select mechanism. Select the first line using space like before, navigate to the last line, and press X (capital x) to set all items in the range at once. Lowercase x has been added as a synonym for space to help reinforce the mechanism, and pressing enter/return continues to be a synonym for “toggle the current line and move down to the next item in this section.”

New config experimental.log.topo makes hg log -G use topological sorting. This is especially useful for aliases since it lets the alias accept an -r option while still using topological sorting with or without the -r (unlike if you use the sort(..., topo) revset).

issue4292: “hg log and {files} {file_adds} {file_mods} {file_dels} in template show wrong files on merged revision”. See details in “Backwards Compatibility Changes”.

Removed (experimental) support for log graph lines mixing parent/grandparent styles. Setting e.g. experimental.graphstyle.parent = ! and experimental.graphstyle.grandparent = 3. would use ! for the first three lines of the graph and then .. This is no longer supported.
If ui.origbackuppath had been (incorrectly) configured to point to a file, we will now replace that file by a directory and put backups in that directory. This is similar to how we would previously replace files in the configured directory by subdirectories.
Template keyword {file_mods}, {file_adds}, and {file_dels} have changed behavior on merge commits. They used to be relative to the first parent, but they now consider both parents. {file_adds} shows files that exists in the commit but did not exist in either parent. {file_dels} shows files that do not exist in the commit but existed in either parent. {file_mods} show the remaining files from {files} that were not in the other two sets.

Matchers are no longer iterable. Use match.files() instead.
match.visitdir() and match.visitchildrenset() now expect the empty string instead of ‘.’ to indicate the root directory.
util.dirs() and util.finddirs() now include an entry for the root directory (empty string).
shelve is no longer an extension now. it will be turned on by default.
New API to manage unfinished operations: Earlier there were distinct APIs which dealt with unfinished states and separate lists maintaining them that are cmdutil.afterresolvestates, cmdutil.unfinishedstates and cmdutil.STATES. Now these have been unified to a single API which handles the various states and their utilities. This API has been added to state.py. Now instead of adding to these 3 lists independently a state for a new operation can be registered using addunfinished() in state module.
cmdutil.checkunfinished() now includes detection for merge too.
merge abort has been disallowed in case an operation of higher precedence is in progress to avoid cases of partial abort of operations.
We used to automatically attempt to make extensions compatible with Python 3 (by translating their source code while loading it). We no longer do that.