in reply to executing code within a regex

Strange. Using AS809 (5.8.3 for win32), I get the expected results.

$line = 'this && that || other & these | those'; output: P:\test>test3 cond && Conditionals: && cond || Conditionals: &&, || cond & Conditionals: &&, ||, & cond | Conditionals: &&, ||, &, |

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail