The /g flag does not require that further matching must start past the end of the previous match--it just makes a request for any other unique matches.

No. It makes a request for another match to the leftright of the end of the previous match. The first match goes up to position 12: 

aaaBBBcccTGAddTGA
XXXXXXXXX
         TGA
           ^ match ends here

[download]
So the next match sees only <c>ddTGA</cc> to match against.
Perl 6 - links to (nearly) everything that is Perl 6.

In reply to Re^3: \G and regexes by moritz
in thread \G and regexes by 7stud

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