| 848 |
single fixed starting character. A bitmap of possible starting bytes is |
single fixed starting character. A bitmap of possible starting bytes is |
| 849 |
created. This speeds up finding a position in the subject at which to start |
created. This speeds up finding a position in the subject at which to start |
| 850 |
matching. |
matching. |
| 851 |
|
.P |
| 852 |
|
The two optimizations just described can be disabled by setting the |
| 853 |
|
PCRE_NO_START_OPTIMIZE option when calling \fBpcre_exec()\fP or |
| 854 |
|
\fBpcre_dfa_exec()\fP. You might want to do this if your pattern contains |
| 855 |
|
callouts, or make use of (*MARK), and you make use of these in cases where |
| 856 |
|
matching fails. See the discussion of PCRE_NO_START_OPTIMIZE |
| 857 |
|
.\" HTML <a href="#execoptions"> |
| 858 |
|
.\" </a> |
| 859 |
|
below. |
| 860 |
|
.\" |
| 861 |
. |
. |
| 862 |
. |
. |
| 863 |
.\" HTML <a name="localesupport"></a> |
.\" HTML <a name="localesupport"></a> |
| 2178 |
.rs |
.rs |
| 2179 |
.sp |
.sp |
| 2180 |
.nf |
.nf |
| 2181 |
Last updated: 20 June 2010 |
Last updated: 21 June 2010 |
| 2182 |
Copyright (c) 1997-2010 University of Cambridge. |
Copyright (c) 1997-2010 University of Cambridge. |
| 2183 |
.fi |
.fi |