Tidies for the 7.7-RC1 distribution.

git-svn-id: svn://vcs.exim.org/pcre/code/trunk@345 2f5784b3-3f2a-0410-8824-cb99058d5e15

1 files changed, 21 insertions, 4 deletions

diff --git a/doc/html/pcreapi.html b/doc/html/pcreapi.html
index 155873b..266e2e6 100644
--- a/doc/html/pcreapi.html
+++ b/doc/html/pcreapi.html
@@ -558,6 +558,22 @@ If this option is set, an unanchored pattern is required to match before or at
 the first newline in the subject string, though the matched text may continue
 over the newline.
 <pre>
+  PCRE_JAVASCRIPT_COMPAT
+</pre>
+If this option is set, PCRE's behaviour is changed in some ways so that it is
+compatible with JavaScript rather than Perl. The changes are as follows:
+</P>
+<P>
+(1) A lone closing square bracket in a pattern causes a compile-time error,
+because this is illegal in JavaScript (by default it is treated as a data
+character). Thus, the pattern AB]CD becomes illegal when this option is set.
+</P>
+<P>
+(2) At run time, a back reference to an unset subpattern group matches an empty
+string (by default this causes the current matching alternative to fail). A
+pattern such as (\1)(a) succeeds when this option is set (assuming it can find
+an "a" in the subject), whereas it fails by default, for Perl compatibility.
+<pre>
   PCRE_MULTILINE
 </pre>
 By default, PCRE treats the subject string as consisting of a single line of
@@ -718,14 +734,15 @@ out of use. To avoid confusion, they have not been re-used.
   54  DEFINE group contains more than one branch
   55  repeating a DEFINE group is not allowed
   56  inconsistent NEWLINE options
-  57  \g is not followed by a braced name or an optionally braced
-        non-zero number
-  58  (?+ or (?- or (?(+ or (?(- must be followed by a non-zero number
+  57  \g is not followed by a braced, angle-bracketed, or quoted
+        name/number or by a plain number
+  58  a numbered reference must not be zero
   59  (*VERB) with an argument is not supported
   60  (*VERB) not recognized
   61  number is too big
   62  subpattern name expected
   63  digit expected after (?+
+  64  ] is an invalid data character in JavaScript compatibility mode
 </pre>
 The numbers 32 and 10000 in errors 48 and 49 are defaults; different values may
 be used if the limits were changed when PCRE was built.
@@ -1955,7 +1972,7 @@ Cambridge CB2 3QH, England.
 </P>
 <br><a name="SEC22" href="#TOC1">REVISION</a><br>
 <P>
-Last updated: 23 January 2008
+Last updated: 12 April 2008
 <br>
 Copyright &copy; 1997-2008 University of Cambridge.
 <br>