/[pcre]/code/trunk/doc/pcrecompat.3
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revision 518 by ph10, Tue May 18 15:47:01 2010 UTC revision 562 by ph10, Sun Oct 31 14:06:43 2010 UTC
# Line 6  PCRE - Perl-compatible regular expressio Line 6  PCRE - Perl-compatible regular expressio
6  .sp  .sp
7  This document describes the differences in the ways that PCRE and Perl handle  This document describes the differences in the ways that PCRE and Perl handle
8  regular expressions. The differences described here are with respect to Perl  regular expressions. The differences described here are with respect to Perl
9  5.10/5.11.  versions 5.10 and above.
10  .P  .P
11  1. PCRE has only a subset of Perl's UTF-8 and Unicode support. Details of what  1. PCRE has only a subset of Perl's UTF-8 and Unicode support. Details of what
12  it does have are given in the  it does have are given in the
# Line 103  would not be possible to distinguish whi Line 103  would not be possible to distinguish whi
103  names map to capturing subpattern number 1. To avoid this confusing situation,  names map to capturing subpattern number 1. To avoid this confusing situation,
104  an error is given at compile time.  an error is given at compile time.
105  .P  .P
106  12. PCRE provides some extensions to the Perl regular expression facilities.  12. Perl recognizes comments in some places that PCRE doesn't, for example,
107    between the ( and ? at the start of a subpattern.
108    .P
109    13. PCRE provides some extensions to the Perl regular expression facilities.
110  Perl 5.10 includes new features that are not in earlier versions of Perl, some  Perl 5.10 includes new features that are not in earlier versions of Perl, some
111  of which (such as named parentheses) have been in PCRE for some time. This list  of which (such as named parentheses) have been in PCRE for some time. This list
112  is with respect to Perl 5.10:  is with respect to Perl 5.10:
# Line 160  Cambridge CB2 3QH, England. Line 163  Cambridge CB2 3QH, England.
163  .rs  .rs
164  .sp  .sp
165  .nf  .nf
166  Last updated: 12 May 2010  Last updated: 31 October 2010
167  Copyright (c) 1997-2010 University of Cambridge.  Copyright (c) 1997-2010 University of Cambridge.
168  .fi  .fi
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