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adding a
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# missing arg
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hg cat: invalid arguments
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hg cat [OPTION]... FILE...
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output the current or given revision of files
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Print the specified files as they were at the given revision. If no
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revision is given, the parent of the working directory is used, or tip if
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no revision is checked out.
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Output may be to a file, in which case the name of the file is given using
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a format string. The formatting rules are the same as for the export
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command, with the following additions:
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"%s" basename of file being printed
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"%d" dirname of file being printed, or '.' if in repository root
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"%p" root-relative path name of file being printed
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options:
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-o --output print output to file with formatted name
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-r --rev print the given revision
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--decode apply any matching decode filter
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-I --include include names matching the given patterns
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-X --exclude exclude names matching the given patterns
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use "hg -v help cat" to show global options
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% [defaults]
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a
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a: No such file in rev 000000000000
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% no repo
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abort: There is no Mercurial repository here (.hg not found)!
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