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( strings being sent to parse routines are always null
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terminated )
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: (parsec) ( a -- n f )
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( apostrophe is ASCII 39 )
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DUP C@ 39 = NOT IF 0 EXIT THEN ( a 0 )
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DUP 2+ C@ 39 = NOT IF 0 EXIT THEN ( a 0 )
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( surrounded by apos, good, return )
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1+ C@ 1 ( n 1 )
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;
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