/[pcre]/code/trunk/doc/pcrecompat.3
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revision 628 by ph10, Wed Jul 20 18:03:20 2011 UTC revision 635 by ph10, Sat Jul 23 16:19:50 2011 UTC
# Line 37  terminated by zero. The escape sequence Line 37  terminated by zero. The escape sequence
37  represent a binary zero.  represent a binary zero.
38  .P  .P
39  5. The following Perl escape sequences are not supported: \el, \eu, \eL,  5. The following Perl escape sequences are not supported: \el, \eu, \eL,
40  \eU, and \eN. In fact these are implemented by Perl's general string-handling  \eU, and \eN when followed by a character name or Unicode value. (\eN on its
41  and are not part of its pattern matching engine. If any of these are  own, matching a non-newline character, is supported.) In fact these are
42  encountered by PCRE, an error is generated.  implemented by Perl's general string-handling and are not part of its pattern
43    matching engine. If any of these are encountered by PCRE, an error is
44    generated.
45  .P  .P
46  6. The Perl escape sequences \ep, \eP, and \eX are supported only if PCRE is  6. The Perl escape sequences \ep, \eP, and \eX are supported only if PCRE is
47  built with Unicode character property support. The properties that can be  built with Unicode character property support. The properties that can be
# Line 107  would not be possible to distinguish whi Line 109  would not be possible to distinguish whi
109  names map to capturing subpattern number 1. To avoid this confusing situation,  names map to capturing subpattern number 1. To avoid this confusing situation,
110  an error is given at compile time.  an error is given at compile time.
111  .P  .P
112  13. Perl recognizes comments in some places that PCRE doesn't, for example,  13. Perl recognizes comments in some places that PCRE does not, for example,
113  between the ( and ? at the start of a subpattern.  between the ( and ? at the start of a subpattern. If the /x modifier is set,
114    Perl allows whitespace between ( and ? but PCRE never does, even if the
115    PCRE_EXTENDED option is set.
116  .P  .P
117  14. PCRE provides some extensions to the Perl regular expression facilities.  14. PCRE provides some extensions to the Perl regular expression facilities.
118  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
# Line 167  Cambridge CB2 3QH, England. Line 171  Cambridge CB2 3QH, England.
171  .rs  .rs
172  .sp  .sp
173  .nf  .nf
174  Last updated: 20 July 2011  Last updated: 23 July 2011
175  Copyright (c) 1997-2011 University of Cambridge.  Copyright (c) 1997-2011 University of Cambridge.
176  .fi  .fi

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