Hum? Yours "resets the regex-engine". Mine doesn't. How can you say we gave the same advice? 

>perl -wle "$_='bacada'; print pos while /a/g"
2
4
6

>perl -wle "$_='bacada'; print pos while s/a//"
Use of uninitialized value in print at -e line 1.

Use of uninitialized value in print at -e line 1.

Use of uninitialized value in print at -e line 1.

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In reply to Re^3: one line regex eating CPU by ikegami
in thread one line regex eating CPU by Anonymous Monk

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