From 12fdfd7b841d93e02a1d26e8e720290921107972 Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 19:27:13 +0000 Subject: renamed --- man/man7/regexp9.7 | 150 ----------------------------------------------------- 1 file changed, 150 deletions(-) delete mode 100644 man/man7/regexp9.7 (limited to 'man/man7') diff --git a/man/man7/regexp9.7 b/man/man7/regexp9.7 deleted file mode 100644 index 14a90d0f..00000000 --- a/man/man7/regexp9.7 +++ /dev/null @@ -1,150 +0,0 @@ -.TH REGEXP9 7 -.de EX -.nf -.ft B -.. -.de EE -.fi -.ft R -.. -.de LR -.if t .BR \\$1 \\$2 -.if n .RB ` \\$1 '\\$2 -.. -.de L -.nh -.if t .B \\$1 -.if n .RB ` \\$1 ' -.. -.SH NAME -regexp9 \- Plan 9 regular expression notation -.SH DESCRIPTION -This manual page describes the regular expression -syntax used by the Plan 9 regular expression library -.IR regexp9 (3). -It is the form used by -.IR egrep (1) -before -.I egrep -got complicated. -.PP -A -.I "regular expression" -specifies -a set of strings of characters. -A member of this set of strings is said to be -.I matched -by the regular expression. In many applications -a delimiter character, commonly -.LR / , -bounds a regular expression. -In the following specification for regular expressions -the word `character' means any character (rune) but newline. -.PP -The syntax for a regular expression -.B e0 -is -.IP -.EX -e3: literal | charclass | '.' | '^' | '$' | '(' e0 ')' - -e2: e3 - | e2 REP - -REP: '*' | '+' | '?' - -e1: e2 - | e1 e2 - -e0: e1 - | e0 '|' e1 -.EE -.PP -A -.B literal -is any non-metacharacter, or a metacharacter -(one of -.BR .*+?[]()|\e^$ ), -or the delimiter -preceded by -.LR \e . -.PP -A -.B charclass -is a nonempty string -.I s -bracketed -.BI [ \|s\| ] -(or -.BI [^ s\| ]\fR); -it matches any character in (or not in) -.IR s . -A negated character class never -matches newline. -A substring -.IB a - b\f1, -with -.I a -and -.I b -in ascending -order, stands for the inclusive -range of -characters between -.I a -and -.IR b . -In -.IR s , -the metacharacters -.LR - , -.LR ] , -an initial -.LR ^ , -and the regular expression delimiter -must be preceded by a -.LR \e ; -other metacharacters -have no special meaning and -may appear unescaped. -.PP -A -.L . -matches any character. -.PP -A -.L ^ -matches the beginning of a line; -.L $ -matches the end of the line. -.PP -The -.B REP -operators match zero or more -.RB ( * ), -one or more -.RB ( + ), -zero or one -.RB ( ? ), -instances respectively of the preceding regular expression -.BR e2 . -.PP -A concatenated regular expression, -.BR "e1\|e2" , -matches a match to -.B e1 -followed by a match to -.BR e2 . -.PP -An alternative regular expression, -.BR "e0\||\|e1" , -matches either a match to -.B e0 -or a match to -.BR e1 . -.PP -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. -.SH "SEE ALSO" -.IR regexp9 (3) -- cgit v1.2.3