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Is it possible to perform a s///g substitution in such a way that the substituted text is itself recursively parsed? That is, can I mangle the code so that I wind up instead with $_ = 'aaaab'? (I don't mean by taking $_ = 'aaab' to begin with, either. :-) ) The problem, as I understand it—and this is probably either over-simplified or blatantly wrong—is that pos is set to point just after the substitution; but something silly like setting pos manually doesn't seem to help either:
UPDATE: By the way, I know that I could just do something like 1 while s///, but I'm curious—purely for academic reasons (or, really, if you must know, because of moritz)—if it can be done entirely inside the regex itself; that is, if regexes can provide the necessary control structure. (Sorry, I unfairly added this while bobf and ikegami were replying.) In reply to Recursive substitution by JadeNB
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