patch: let caller pass in root-filtering matcher (API) The --root option to `hg diff` does two things: * Shows paths relative to the given root * Filters paths by the given root, including copy sources The root argument is passed through down to patch.diff(). I feel like we can make patch.diff() more generic by not passing down the root argument, but instead pass: * A function for taking a repo-relative path and printing it. I want to reuse this for showing cwd-relative paths later. This is the actual motivation for this patch. * A matcher that's already been filtered by the root argument * A second matcher that filters the copy sources This is one step towards that. Differential Revision: https://phab.mercurial-scm.org/D5892

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# See http://EditorConfig.org for the specification

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root = true

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[*.py]

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indent_size = 4

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indent_style = space

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trim_trailing_whitespace = true

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[*.{c,h}]

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indent_size = 8

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indent_style = tab

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trim_trailing_whitespace = true

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[*.t]

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indent_size = 2

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indent_style = space

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trim_trailing_whitespace = false