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Mercurial supports a functional language for selecting a set of
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revisions.
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The language supports a number of predicates which are joined by infix
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operators. Parenthesis can be used for grouping.
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Identifiers such as branch names must be quoted with single or double
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quotes if they contain characters outside of
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``[._a-zA-Z0-9\x80-\xff]`` or if they match one of the predefined
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predicates. Special characters can be used in quoted identifiers by
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escaping them, e.g., ``\n`` is interpreted as a newline.
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There is a single prefix operator:
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``not x``
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Changesets not in x. Short form is ``! x``.
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These are the supported infix operators:
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``x::y``
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A DAG range, meaning all changesets that are descendants of x and
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ancestors of y, including x and y themselves. If the first endpoint
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is left out, this is equivalent to ``ancestors(y)``, if the second
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is left out it is equivalent to ``descendants(x)``.
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An alternative syntax is ``x..y``.
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``x:y``
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All changesets with revision numbers between x and y, both
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inclusive. Either endpoint can be left out, they default to 0 and
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tip.
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``x and y``
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The intersection of changesets in x and y. Short form is ``x & y``.
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``x or y``
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The union of changesets in x and y. There are two alternative short
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forms: ``x | y`` and ``x + y``.
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``x - y``
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Changesets in x but not in y.
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The following predicates are supported:
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``adds(pattern)``
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Changesets that add a file matching pattern.
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``all()``
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All changesets, the same as ``0:tip``.
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``ancestor(single, single)``
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Greatest common ancestor of the two changesets.
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``ancestors(set)``
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Changesets that are ancestors of a changeset in set.
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``author(string)``
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Alias for ``user(string)``.
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``branch(set)``
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The branch names are found for changesets in set, and the result is
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all changesets belonging to one those branches.
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``children(set)``
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Child changesets of changesets in set.
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``closed()``
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Changeset is closed.
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``contains(pattern)``
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Revision contains pattern.
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``date(interval)``
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Changesets within the interval, see :hg:`help dates`.
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``descendants(set)``
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Changesets which are decendants of changesets in set.
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``file(pattern)``
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Changesets which manually affected files matching pattern.
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``follow()``
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An alias for ``::.`` (ancestors of the working copy's first parent).
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``grep(regex)``
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Like ``keyword(string)`` but accepts a regex.
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``head()``
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Changeset is a head.
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``heads(set)``
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Members of set with no children in set.
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``keyword(string)``
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Search commit message, user name, and names of changed files for
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string.
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``limit(set, n)``
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First n members of set.
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``max(set)``
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Changeset with highest revision number in set.
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``merge()``
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Changeset is a merge changeset.
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``modifies(pattern)``
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Changesets which modify files matching pattern.
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``outgoing([path])``
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Changesets missing in path.
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``p1(set)``
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First parent of changesets in set.
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``p2(set)``
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Second parent of changesets in set.
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``parents(set)``
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The set of all parents for all changesets in set.
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``removes(pattern)``
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Changesets which remove files matching pattern.
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``reverse(set)``
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Reverse order of set.
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``roots(set)``
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Changesets with no parent changeset in set.
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``sort(set[, [-]key...])``
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Sort set by keys. The default sort order is ascending, specify a key
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as ``-key`` to sort in descending order.
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The keys can be:
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- ``rev`` for the revision number,
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- ``branch`` for the branch name,
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- ``desc`` for the commit message (description),
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- ``user`` for user name (``author`` can be used as an alias),
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- ``date`` for the commit date
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``tagged()``
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Changeset is tagged.
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``user(string)``
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User name is string.
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Command line equivalents for :hg:`log`::
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-f -> ::.
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-d x -> date(x)
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-k x -> keyword(x)
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-m -> merge()
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-u x -> user(x)
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-b x -> branch(x)
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-P x -> !::x
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-l x -> limit(expr, x)
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Some sample queries::
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hg log -r 'branch(default)'
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hg log -r 'branch(default) and 1.5:: and not merge()'
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hg log -r '1.3::1.5 and keyword(bug) and file("hgext/*")'
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hg log -r 'sort(date("May 2008"), user)'
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hg log -r '(keyword(bug) or keyword(issue)) and not ancestors(tagged())'
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