branches: deprecate -a

largefiles: fix a spurious missing file warning with forget (issue4053) If an uncommitted and deleted file was forgotten, a warning would be emitted, even though the operation was successful. See the previous patch for 'remove -A' for the exact circumstances, and details about the cause.

largefiles: fix a spurious missing file warning with 'remove -A' (issue4053) The bug report doesn't mention largefiles, but the given recipe doesn't fail unless the largefiles extension is loaded. The problem only affected normal files, whether or not any largefiles are committed, and only files that have not been committed yet. (Files with an 'a' state are dropped from dirstate, not marked removed.) Further, if the named normal file never existed, the warning would be printed out twice. The problem is that the core implementation of remove() calls repo.status(), which eventually triggers a dirstate.walk(). When the file isn't seen in the filesystem during the walk, the exception handling finds the file in dirstate, so it doesn't complain. However, the largefiles implementation called status() again with all of the original files (including the normal ones, just dropped). This time, the exception handler doesn't find the file in dirstate and does complain. This simply excludes the normal files from the second repo.status() call, which the largefiles extension has no interest is processing anyway.

largefiles: introduce the 'composelargefilematcher()' method This is a copy/paste (with the necessary tweaks) of the composenormalfilematcher method currently on default, which does the inverse- this trims the normal files out of the matcher. It will be used in the next patch.

context: return dirstate parents in workingctx.ancestors() workingctx.ancestors() was not returning the dirstate parents as part of the result set. The only place this function is used is for copy detection when committing a file, and that code already checks the parents manually, so this change has no affect at the moment. I found it while playing around with changing how copy detection works.

backout: add --commit option Mercurial backout command makes a commmit by default only when the backed out revision is the parent of working directory and doesn't commit in any other case. The --commit option changes behaviour of backout to make a commit whenever possible (i.e. there is no unresolved conflicts). This behaviour seems more intuitive to many use (especially git users migrating to hg).

share: add option to share bookmarks This patch adds the -B/--bookmarks option to the share command added by the share extension. All it does for now is create a marker, 'bookmarks.shared', that will be used by future code to implement the sharing functionality.

highlight: ignore Unicode's extra linebreaks (issue4291) Unicode and Python's unicode.splitlines() treat several extra legacy ASCII codepoints as linebreaks, even though the vast bulk of computing and Python's own str.splitlines() do not. Rather than introduce line numbering confusion, we filter them out when highlighting.