• lseif
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        7 months ago

        /^[a-zA-Z_]\w*$/

        i think… most languages at least

        • anton@lemmy.blahaj.zone
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          7 months ago

          That’s variables and keyword.

          If you have a regex for a languages keywords you can substract as they are closed under that operation.

          • lseif
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            7 months ago

            good point. some languages (like rust) also support r# prefix to use a keyword as a variable also