regexp(7) - Plan 9 from User Space

From adc93f6097615f16d57e8a24a256302f2144ec4e Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 17:37:50 +0000 Subject: cut out the html - they're going to cause diffing problems. --- man/man7/regexp.html | 131 --------------------------------------------------- 1 file changed, 131 deletions(-) delete mode 100644 man/man7/regexp.html (limited to 'man/man7/regexp.html') diff --git a/man/man7/regexp.html b/man/man7/regexp.html deleted file mode 100644 index 1bc2c74e..00000000 --- a/man/man7/regexp.html +++ /dev/null @@ -1,131 +0,0 @@ - -regexp(7) - Plan 9 from User Space - - - - -

REGEXP(7) REGEXP(7) -

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NAME
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- - regexp – Plan 9 regular expression notation
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DESCRIPTION
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- - This manual page describes the regular expression syntax used - by the Plan 9 regular expression library regexp(3). It is the - form used by egrep(1) before egrep got complicated. -
- - A regular expression specifies a set of strings of characters. - A member of this set of strings is said to be matched by the regular - expression. In many applications a delimiter character, commonly - /, bounds a regular expression. In the following specification - for regular expressions the word ‘character’ means any - character (rune) but newline. -
- - The syntax for a regular expression e0 is
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- - e3: literal | charclass | '.' | '^' | '$' | '(' e0 ')' - e2: e3 - - - - | e2 REP - - - REP: '*' | '+' | '?' - e1: e2 - - - - | e1 e2 - - - e0: e1 - - - - | e0 '|' e1 - - - - - -
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- A literal is any non-metacharacter, or a metacharacter (one of - .*+?[]()|\^$), or the delimiter preceded by \. -
- - A charclass is a nonempty string s bracketed [s] (or [^s]); it - matches any character in (or not in) s. A negated character class - never matches newline. A substring a−b, with a and b in ascending - order, stands for the inclusive range of characters between a - and b. In s, the metacharacters −, ], an initial ^, and the - regular expression delimiter must be preceded by a \; other metacharacters - have no special meaning and may appear unescaped. -
- - A . matches any character. -
- - A ^ matches the beginning of a line; $ matches the end of the - line. -
- - The REP operators match zero or more (*), one or more (+), zero - or one (?), instances respectively of the preceding regular expression - e2. -
- - A concatenated regular expression, e1e2, matches a match to e1 - followed by a match to e2. -
- - An alternative regular expression, e0|e1, matches either a match - to e0 or a match to e1. -
- - A match to any part of a regular expression extends as far as - possible without preventing a match to the remainder of the regular - expression.
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SEE ALSO
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- - regexp(3)
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