/[pcre]/code/trunk/doc/pcrematching.3
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revision 167 by ph10, Mon Apr 16 13:25:10 2007 UTC revision 168 by ph10, Tue May 29 15:18:18 2007 UTC
# Line 119  not supported, and cause errors if encou Line 119  not supported, and cause errors if encou
119  4. For the same reason, conditional expressions that use a backreference as the  4. For the same reason, conditional expressions that use a backreference as the
120  condition or test for a specific group recursion are not supported.  condition or test for a specific group recursion are not supported.
121  .P  .P
122  5. Callouts are supported, but the value of the \fIcapture_top\fP field is  5. Because many paths through the tree may be active, the \eK escape sequence,
123    which resets the start of the match when encountered (but may be on some paths
124    and not on others), is not supported. It causes an error if encountered.
125    .P
126    6. Callouts are supported, but the value of the \fIcapture_top\fP field is
127  always 1, and the value of the \fIcapture_last\fP field is always -1.  always 1, and the value of the \fIcapture_last\fP field is always -1.
128  .P  .P
129  6.  7.
130  The \eC escape sequence, which (in the standard algorithm) matches a single  The \eC escape sequence, which (in the standard algorithm) matches a single
131  byte, even in UTF-8 mode, is not supported because the alternative algorithm  byte, even in UTF-8 mode, is not supported because the alternative algorithm
132  moves through the subject string one character at a time, for all active paths  moves through the subject string one character at a time, for all active paths
# Line 177  Cambridge CB2 3QH, England. Line 181  Cambridge CB2 3QH, England.
181  .rs  .rs
182  .sp  .sp
183  .nf  .nf
184  Last updated: 06 March 2007  Last updated: 29 May 2007
185  Copyright (c) 1997-2007 University of Cambridge.  Copyright (c) 1997-2007 University of Cambridge.
186  .fi  .fi

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