126 |
6. Callouts are supported, but the value of the \fIcapture_top\fP field is |
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 |
7. |
7. The \eC escape sequence, which (in the standard algorithm) matches a single |
|
The \eC escape sequence, which (in the standard algorithm) matches a single |
|
130 |
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 |
131 |
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 |
132 |
through the tree. |
through the tree. |
133 |
|
.P |
134 |
|
8. None of the backtracking control verbs such as (*PRUNE) are supported. |
135 |
. |
. |
136 |
.SH "ADVANTAGES OF THE ALTERNATIVE ALGORITHM" |
.SH "ADVANTAGES OF THE ALTERNATIVE ALGORITHM" |
137 |
.rs |
.rs |
182 |
.rs |
.rs |
183 |
.sp |
.sp |
184 |
.nf |
.nf |
185 |
Last updated: 29 May 2007 |
Last updated: 08 August 2007 |
186 |
Copyright (c) 1997-2007 University of Cambridge. |
Copyright (c) 1997-2007 University of Cambridge. |
187 |
.fi |
.fi |