PEP 263: fix typo in coding regex (#672)
The characters before the # in a coding declaration line can be spaces, tabs, or form feeds; the escape sequence for a form feed is a `\f`, not a `\v` as is shown here.
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@ -72,7 +72,7 @@ or::
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More precisely, the first or second line must match the following
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More precisely, the first or second line must match the following
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regular expression::
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regular expression::
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^[ \t\v]*#.*?coding[:=][ \t]*([-_.a-zA-Z0-9]+)
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^[ \t\f]*#.*?coding[:=][ \t]*([-_.a-zA-Z0-9]+)
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The first group of this
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The first group of this
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expression is then interpreted as encoding name. If the encoding
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expression is then interpreted as encoding name. If the encoding
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