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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
\d Perl character class
\D negated Perl character class
[:alpha:] ASCII character class
[:^alpha:] negated ASCII character class
[[:alpha:]] ASCII character class
[[:^alpha:]] negated ASCII character class
\pN Unicode character class (one-letter name)
\p{Greek} Unicode character class
\PN negated Unicode character class (one-letter name)
@ -46,14 +46,14 @@ Repetitions:
x{n,}? n or more x, prefer fewer
x{n}? exactly n x
Implementation restriction: The counting forms x{n} etc. (but not the other
forms x* etc.) have an upper limit of n=1000. Negative or higher explicit
counts yield the parse error ErrInvalidRepeatSize.
Implementation restriction: The counting forms x{n,m}, x{n,}, and x{n}
reject forms that create a minimum or maximum repetition count above 1000.
Unlimited repetitions are not subject to this restriction.
Grouping:
(re) 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: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)
\A at beginning of text
\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
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 negated character class (== \P{Name})
Perl character classes:
Perl character classes (all ASCII-only):
\d digits (== [0-9])
\D not digits (== [^0-9])
\s whitespace (== [\t\n\f\r ])
\S not whitespace (== [^\t\n\f\r ])
\w ASCII word characters (== [0-9A-Za-z_])
\W not ASCII word characters (== [^0-9A-Za-z_])
\w word characters (== [0-9A-Za-z_])
\W not word characters (== [^0-9A-Za-z_])
ASCII character classes:
[:alnum:] alphanumeric (== [0-9A-Za-z])
[:alpha:] alphabetic (== [A-Za-z])
[:ascii:] ASCII (== [\x00-\x7F])
[:blank:] blank (== [\t ])
[:cntrl:] control (== [\x00-\x1F\x7F])
[:digit:] digits (== [0-9])
[:graph:] graphical (== [!-~] == [A-Za-z0-9!"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~])
[:lower:] lower case (== [a-z])
[:print:] printable (== [ -~] == [ [:graph:]])
[:punct:] punctuation (== [!-/:-@[-`{-~])
[:space:] whitespace (== [\t\n\v\f\r ])
[:upper:] upper case (== [A-Z])
[:word:] word characters (== [0-9A-Za-z_])
[:xdigit:] hex digit (== [0-9A-Fa-f])
[[:alnum:]] alphanumeric (== [0-9A-Za-z])
[[:alpha:]] alphabetic (== [A-Za-z])
[[:ascii:]] ASCII (== [\x00-\x7F])
[[:blank:]] blank (== [\t ])
[[:cntrl:]] control (== [\x00-\x1F\x7F])
[[:digit:]] digits (== [0-9])
[[:graph:]] graphical (== [!-~] == [A-Za-z0-9!"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~])
[[:lower:]] lower case (== [a-z])
[[:print:]] printable (== [ -~] == [ [:graph:]])
[[:punct:]] punctuation (== [!-/:-@[-`{-~])
[[:space:]] whitespace (== [\t\n\v\f\r ])
[[:upper:]] upper case (== [A-Z])
[[:word:]] word characters (== [0-9A-Za-z_])
[[:xdigit:]] hex digit (== [0-9A-Fa-f])
*/
package syntax