findstring was backwards
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@ -369,8 +369,8 @@ value is either the empty string (false) or a nonempty string (true).
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$[wordsubst <from>,<to>,<text>] - like $[subst], except it only
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replaces whole words.
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$[findstring <a>,<b>] - returns <b> if and only if it is a substring
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of <a>; otherwise, returns the empty string.
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$[findstring <a>,<b>] - returns <a> if and only if it is a substring
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of <b>; otherwise, returns the empty string.
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$[sort <words>] - returns the space-separated list of <words>,
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sorted into alphabetical order. This also removes duplicate
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