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by thwarted 1114 days ago
The way you worded this reminded me about some language extensions for the Commodore 64 and 128 that hooked into the BASIC language tokenizer. I remember one published in RUN magazine, I think for additional graphics functions, that added new BASIC instructions that were all prefixed with @. Not only did this prefix invoke the new code while interpreting, it also namespaced the addition avoiding conflicts with existing BASIC code.