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peg.ebnf-docs: add note on including "-" in the character classes

char-rename
Alexander Iljin 2016-09-30 18:54:17 +03:00 committed by John Benediktsson
parent 6bdb62d142
commit 9a3a3c0170
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basis/peg/ebnf/ebnf-docs.factor
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@ -193,6 +193,7 @@ ARTICLE: "peg.ebnf.character-class" "EBNF Rule: Character Class"
"square brackets. Multiple ranges can be included in a single character class " "square brackets. Multiple ranges can be included in a single character class "
"definition. The syntax for the range is a start character, followed by a minus " "definition. The syntax for the range is a start character, followed by a minus "
"(-) followed by an end character. For example " { $snippet "[a-zA-Z]" } ". " "(-) followed by an end character. For example " { $snippet "[a-zA-Z]" } ". "
"To include the minus (-) character in the class, make it the first or the last one: " { $snippet "[-0-9]" } " or " { $snippet "[a-z-]" } ". "
"The AST resulting from the match is an integer of the character code for the " "The AST resulting from the match is an integer of the character code for the "
"character that matched." "character that matched."
{ $examples { $examples