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Regular Expression Library
**************************

  This manual documents how to program with the GNU regular expression
library.  This is edition 0.12a of the manual, 19 September 1992.

  The first part of this master menu lists the major nodes in this Info
document, including the index.  The rest of the menu lists all the
lower level nodes in the document.

Overview
Regular Expression Syntax
Common Operators
GNU Operators
GNU Emacs Operators
What Gets Matched?
Programming with Regex
Copying: Copying and sharing Regex.
Index: General index. -- The Detailed Node Listing --
Regular Expression Syntax
Syntax Bits
Predefined Syntaxes
Collating Elements vs. Characters
The Backslash Character: Common Operators
Match-self Operator: Ordinary characters.
Match-any-character Operator: .
Concatenation Operator: Juxtaposition.
Repetition Operators: * + ? {}
Alternation Operator: |
List Operators: [...] [^...]
Grouping Operators: (...)
Back-reference Operator: \digit
Anchoring Operators: ^ $
Repetition Operators
Match-zero-or-more Operator: *
Match-one-or-more Operator: +
Match-zero-or-one Operator: ?
Interval Operators: {}
List Operators (`[' ... `]' and `[^' ... `]')
Character Class Operators: [:class:]
Range Operator: start-end
Anchoring Operators
Match-beginning-of-line Operator: ^
Match-end-of-line Operator: $
GNU Operators
Word Operators
Buffer Operators: Word Operators
Non-Emacs Syntax Tables
Match-word-boundary Operator: \b
Match-within-word Operator: \B
Match-beginning-of-word Operator: \<
Match-end-of-word Operator: \>
Match-word-constituent Operator: \w
Match-non-word-constituent Operator: \W
Buffer Operators
Match-beginning-of-buffer Operator: \`
Match-end-of-buffer Operator: \'
GNU Emacs Operators
Syntactic Class Operators: Syntactic Class Operators
Emacs Syntax Tables
Match-syntactic-class Operator: \sCLASS
Match-not-syntactic-class Operator: \SCLASS
Programming with Regex
GNU Regex Functions
POSIX Regex Functions
BSD Regex Functions: GNU Regex Functions
GNU Pattern Buffers: The re_pattern_buffer type.
GNU Regular Expression Compiling: re_compile_pattern ()
GNU Matching: re_match ()
GNU Searching: re_search ()
Matching/Searching with Split Data: re_match_2 (), re_search_2 ()
Searching with Fastmaps: re_compile_fastmap ()
GNU Translate Tables: The `translate' field.
Using Registers: The re_registers type and related fns.
Freeing GNU Pattern Buffers: regfree ()
POSIX Regex Functions
POSIX Pattern Buffers: The regex_t type.
POSIX Regular Expression Compiling: regcomp ()
POSIX Matching: regexec ()
Reporting Errors: regerror ()
Using Byte Offsets: The regmatch_t type.
Freeing POSIX Pattern Buffers: regfree ()
BSD Regex Functions
BSD Regular Expression Compiling: re_comp ()
BSD Searching: re_exec ()

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