Please note that I mentioned 5.9.2, the most current release of the developer branch, which has a patch by demerphq, that builds a very optimized tree out of a list like mine. The tree (actually a Trie) can the optimally match/compare against the string, by looking at exactly the first three chars of the string and quickly decide if it matches or not.

In reply to Re^3: Regexp for range of numbers by Corion
in thread Regexp for range of numbers by loris

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