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[...]I was recently investigating the feasability of adding support for ".xor." as a synonym of ".neqv." as a GNU extension to the gfortran front-end [to match the equivalent functionality provided by several commercial fortran compilers], when I stumbled across match.c:gfc_match_strings.
[...]Perhaps my bioinformatics/chemoinformatics pattern matching background has made me sensitive to such inefficiencies [2], but the proposed patch below and the following follow-up, provide far more efficient implementations, based upon the theory/analysis described in [1].
Thoughts?
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