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Mercurial supports a functional language for selecting a set of
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files.
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Like other file patterns, this pattern type is indicated by a prefix,
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'set:'. The language supports a number of predicates which are joined
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by infix operators. Parenthesis can be used for grouping.
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Identifiers such as filenames or patterns must be quoted with single
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or double quotes if they contain characters outside of
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``[.*{}[]?/\_a-zA-Z0-9\x80-\xff]`` or if they match one of the
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predefined predicates. This generally applies to file patterns other
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than globs and arguments for predicates.
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Special characters can be used in quoted identifiers by escaping them,
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e.g., ``\n`` is interpreted as a newline. To prevent them from being
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interpreted, strings can be prefixed with ``r``, e.g. ``r'...'``.
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There is a single prefix operator:
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``not x``
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Files not in x. Short form is ``! x``.
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These are the supported infix operators:
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``x and y``
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The intersection of files in x and y. Short form is ``x & y``.
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``x or y``
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The union of files 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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Files in x but not in y.
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The following predicates are supported:
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.. predicatesmarker
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Some sample queries:
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- Show status of files that appear to be binary in the working directory::
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hg status -A "set:binary()"
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- Forget files that are in .hgignore but are already tracked::
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hg forget "set:hgignore() and not ignored()"
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- Find text files that contain a string::
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hg locate "set:grep(magic) and not binary()"
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- Find C files in a non-standard encoding::
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hg locate "set:**.c and not encoding('UTF-8')"
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- Revert copies of large binary files::
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hg revert "set:copied() and binary() and size('>1M')"
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- Remove files listed in foo.lst that contain the letter a or b::
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hg remove "set: 'listfile:foo.lst' and (**a* or **b*)"
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See also :hg:`help patterns`.
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