/[pcre]/code/trunk/doc/pcreprecompile.3
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revision 99 by ph10, Tue Mar 6 12:27:42 2007 UTC revision 182 by ph10, Wed Jun 13 15:09:54 2007 UTC
# Line 17  tables, it is a little bit more complica Line 17  tables, it is a little bit more complica
17  If you save compiled patterns to a file, you can copy them to a different host  If you save compiled patterns to a file, you can copy them to a different host
18  and run them there. This works even if the new host has the opposite endianness  and run them there. This works even if the new host has the opposite endianness
19  to the one on which the patterns were compiled. There may be a small  to the one on which the patterns were compiled. There may be a small
20  performance penalty, but it should be insignificant.  performance penalty, but it should be insignificant. However, compiling regular
21    expressions with one version of PCRE for use with a different version is not
22    guaranteed to work and may cause crashes.
23  .  .
24  .  .
25  .SH "SAVING A COMPILED PATTERN"  .SH "SAVING A COMPILED PATTERN"
# Line 115  usual way. Line 117  usual way.
117  .SH "COMPATIBILITY WITH DIFFERENT PCRE RELEASES"  .SH "COMPATIBILITY WITH DIFFERENT PCRE RELEASES"
118  .rs  .rs
119  .sp  .sp
120  The layout of the control block that is at the start of the data that makes up  In general, it is safest to recompile all saved patterns when you update to a
121  a compiled pattern was changed for release 5.0. If you have any saved patterns  new PCRE release, though not all updates actually require this. Recompiling is
122  that were compiled with previous releases (not a facility that was previously  definitely needed for release 7.2.
 advertised), you will have to recompile them for release 5.0 and above.  
 .P  
 If you have any saved patterns in UTF-8 mode that use \ep or \eP that were  
 compiled with any release up to and including 6.4, you will have to recompile  
 them for release 6.5 and above.  
 .P  
 All saved patterns from earlier releases must be recompiled for release 7.0 or  
 higher, because there was an internal reorganization at that release.  
123  .  .
124  .  .
125  .  .
# Line 143  Cambridge CB2 3QH, England. Line 137  Cambridge CB2 3QH, England.
137  .rs  .rs
138  .sp  .sp
139  .nf  .nf
140  Last updated: 06 March 2007  Last updated: 13 June 2007
141  Copyright (c) 1997-2007 University of Cambridge.  Copyright (c) 1997-2007 University of Cambridge.
142  .fi  .fi
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