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June 2010

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[cl-ppcre-devel] Prioritising matches by the order of the alternatives.
by David Johnson-Davies 23 Jun '10

23 Jun '10

Is it possible to prioritise matches by the order of the alternatives? This demonstrates what I want to do: (cl-ppcre::scan-to-strings "super(man|dog|girl|woman|boy)" "this is the story of superboy and superman.") This matches "superboy" because it matches the first "super" and then tries each of the ORs until it finds "boy". What I want it to do is match according to the priority I've specified in the OR list. For example, if it finds a "superman" anywhere in the target-string it should match that before trying "superdog" etc. I know I could do this with a bit of Lisp code, but if it's possible to keep it all in the regexp I'd prefer to do that. Thanks, David Johnson-Davies

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