[pcre-dev] Start optimization issue

[ND]

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 things? I don't find in  
documentation anything about this case.

Thanx.

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