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regexp/syntax: regenerate doc.go from re2 syntax

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Generated using re2/doc/mksyntaxgo.

Fixes #8505.

LGTM=iant
R=r, iant
CC=golang-codereviews
https://golang.org/cl/155890043
This commit is contained in:
Russ Cox 2014-10-06 15:32:11 -04:00
parent 7e6e502f9b
commit 85fd0fd7c4
1 changed files with 24 additions and 24 deletions
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48
src/regexp/syntax/doc.go
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@ -21,8 +21,8 @@ Single characters:
[^xyz] negated character class [^xyz] negated character class
\d Perl character class \d Perl character class
\D negated Perl character class \D negated Perl character class
[:alpha:] ASCII character class [[:alpha:]] ASCII character class
[:^alpha:] negated ASCII character class [[:^alpha:]] negated ASCII character class
\pN Unicode character class (one-letter name) \pN Unicode character class (one-letter name)
\p{Greek} Unicode character class \p{Greek} Unicode character class
\PN negated Unicode character class (one-letter name) \PN negated Unicode character class (one-letter name)
@ -46,14 +46,14 @@ Repetitions:
x{n,}? n or more x, prefer fewer x{n,}? n or more x, prefer fewer
x{n}? exactly n x x{n}? exactly n x
Implementation restriction: The counting forms x{n} etc. (but not the other Implementation restriction: The counting forms x{n,m}, x{n,}, and x{n}
forms x* etc.) have an upper limit of n=1000. Negative or higher explicit reject forms that create a minimum or maximum repetition count above 1000.
counts yield the parse error ErrInvalidRepeatSize. Unlimited repetitions are not subject to this restriction.
Grouping: Grouping:
(re) numbered capturing group (submatch) (re) numbered capturing group (submatch)
(?P<name>re) named & numbered capturing group (submatch) (?P<name>re) named & numbered capturing group (submatch)
(?:re) non-capturing group (submatch) (?:re) non-capturing group
(?flags) set flags within current group; non-capturing (?flags) set flags within current group; non-capturing
(?flags:re) set flags during re; non-capturing (?flags:re) set flags during re; non-capturing
@ -69,7 +69,7 @@ Empty strings:
$ at end of text (like \z not \Z) or line (flag m=true) $ at end of text (like \z not \Z) or line (flag m=true)
\A at beginning of text \A at beginning of text
\b at ASCII word boundary (\w on one side and \W, \A, or \z on the other) \b at ASCII word boundary (\w on one side and \W, \A, or \z on the other)
\B not an ASCII word boundary \B not at ASCII word boundary
\z at end of text \z at end of text
Escape sequences: Escape sequences:
@ -103,29 +103,29 @@ Named character classes as character class elements:
[\p{Name}] named Unicode property inside character class (== \p{Name}) [\p{Name}] named Unicode property inside character class (== \p{Name})
[^\p{Name}] named Unicode property inside negated character class (== \P{Name}) [^\p{Name}] named Unicode property inside negated character class (== \P{Name})
Perl character classes: Perl character classes (all ASCII-only):
\d digits (== [0-9]) \d digits (== [0-9])
\D not digits (== [^0-9]) \D not digits (== [^0-9])
\s whitespace (== [\t\n\f\r ]) \s whitespace (== [\t\n\f\r ])
\S not whitespace (== [^\t\n\f\r ]) \S not whitespace (== [^\t\n\f\r ])
\w ASCII word characters (== [0-9A-Za-z_]) \w word characters (== [0-9A-Za-z_])
\W not ASCII word characters (== [^0-9A-Za-z_]) \W not word characters (== [^0-9A-Za-z_])
ASCII character classes: ASCII character classes:
[:alnum:] alphanumeric (== [0-9A-Za-z]) [[:alnum:]] alphanumeric (== [0-9A-Za-z])
[:alpha:] alphabetic (== [A-Za-z]) [[:alpha:]] alphabetic (== [A-Za-z])
[:ascii:] ASCII (== [\x00-\x7F]) [[:ascii:]] ASCII (== [\x00-\x7F])
[:blank:] blank (== [\t ]) [[:blank:]] blank (== [\t ])
[:cntrl:] control (== [\x00-\x1F\x7F]) [[:cntrl:]] control (== [\x00-\x1F\x7F])
[:digit:] digits (== [0-9]) [[:digit:]] digits (== [0-9])
[:graph:] graphical (== [!-~] == [A-Za-z0-9!"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~]) [[:graph:]] graphical (== [!-~] == [A-Za-z0-9!"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~])
[:lower:] lower case (== [a-z]) [[:lower:]] lower case (== [a-z])
[:print:] printable (== [ -~] == [ [:graph:]]) [[:print:]] printable (== [ -~] == [ [:graph:]])
[:punct:] punctuation (== [!-/:-@[-`{-~]) [[:punct:]] punctuation (== [!-/:-@[-`{-~])
[:space:] whitespace (== [\t\n\v\f\r ]) [[:space:]] whitespace (== [\t\n\v\f\r ])
[:upper:] upper case (== [A-Z]) [[:upper:]] upper case (== [A-Z])
[:word:] word characters (== [0-9A-Za-z_]) [[:word:]] word characters (== [0-9A-Za-z_])
[:xdigit:] hex digit (== [0-9A-Fa-f]) [[:xdigit:]] hex digit (== [0-9A-Fa-f])
*/ */
package syntax package syntax