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33 lines
1.7 KiB
Go
33 lines
1.7 KiB
Go
// Package blackfriday is a Markdown processor.
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//
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// It translates plain text with simple formatting rules into HTML or LaTeX.
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//
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// Sanitized Anchor Names
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//
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// Blackfriday includes an algorithm for creating sanitized anchor names
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// corresponding to a given input text. This algorithm is used to create
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// anchors for headings when EXTENSION_AUTO_HEADER_IDS is enabled. The
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// algorithm is specified below, so that other packages can create
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// compatible anchor names and links to those anchors.
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//
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// The algorithm iterates over the input text, interpreted as UTF-8,
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// one Unicode code point (rune) at a time. All runes that are letters (category L)
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// or numbers (category N) are considered valid characters. They are mapped to
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// lower case, and included in the output. All other runes are considered
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// invalid characters. Invalid characters that preceed the first valid character,
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// as well as invalid character that follow the last valid character
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// are dropped completely. All other sequences of invalid characters
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// between two valid characters are replaced with a single dash character '-'.
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//
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// SanitizedAnchorName exposes this functionality, and can be used to
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// create compatible links to the anchor names generated by blackfriday.
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// This algorithm is also implemented in a small standalone package at
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// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
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// that want a small package and don't need full functionality of blackfriday.
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package blackfriday
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// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
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// github.com/shurcooL/sanitized_anchor_name.
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// Otherwise, users of sanitized_anchor_name will get anchor names
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// that are incompatible with those generated by blackfriday.
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