On Mon, 9 Jul 2012, ND wrote:
And you are right: not only atomic group but some backtracking verbs gives
same result.
May be some code correction needed in those two places.
Yes. It seems that the .* optimization must be disabled if the .* is
inside an atomic group, or if *PRUNE or *SKIP is
On Tue, 10 Jul 2012, I wrote:
Yes. It seems that the .* optimization must be disabled if the .* is
inside an atomic group, or if *PRUNE or *SKIP is present in the pattern.
I will look at the code to see how best to do this.
I have committed a patch (r994) that I believe fixes this related
On 2012-07-09 05:20, Zoltán Herczeg wrote:
I have investigated this issue, and in the optimized case,
PCRE_STARTLINE is set, so it searches the first newline.
If DOTALL is set the result is the same. It seems that is_anchored() is in
action. I think PCRE must not assume such patterns as
If DOTALL is set the result is the same. It seems that is_anchored() is in
action. I think PCRE must not assume such patterns as anchored.
No.
/* .* means start at start or after \n if it isn't in brackets that
may be referenced. */
else if (op == OP_TYPESTAR || op == OP_TYPEMINSTAR
On 2012-07-09 10:51, Zoltán Herczeg wrote:
If DOTALL is set the result is the same. It seems that is_anchored()
is in action. I think PCRE must not assume such patterns as anchored.
No.
Yes. Consider followed pattern:
PCRE version 8.31 2012-07-06
/(?.*?a)b/sI
Capturing subpattern count = 0
Good day!
Here is pcretest.exe listing:
PCRE version 8.31 2012-07-06
/(?.*?a)(?=ba)/
aba
No match
MATCH was inspected.
More investigation returns that is start optimization issue.
PCRE version 8.31 2012-07-06
/(*NO_START_OPT)(?.*?a)(?=ba)/
aba
0: ba
What kind of start optimization doing
Hi,
I have investigated this issue, and in the optimized case, PCRE_STARTLINE is
set, so it searches the first newline. There is a comment for this before
is_startline(...):
/* This is called to find out if every branch starts with ^ or .* so that
first char processing can be done to speed
