Support isotopes in logical expressions. The grammar needed to be cha… #401
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…nged and introduces and ambiguity but does the correct thing, we use LOOKAHEAD(1) to suppress the warnings.
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…nged and introduces and ambiguity but does the correct thing, we use LOOKAHEAD(1) to suppress the warnings.
The javacc grammar is complicated so can be difficult to work out if it's correct but no existing SMARTS tests change their counts/match status. I've got patches ready to go on a new much simpler SMARTS parser/expressions but this needed to be fixed.