Digit separation might make long numbers more readable, but now they’re also more locale-dependent. Same goes for commas versus periods. Regardless, I think the

Digit separation might make long numbers more readable, but now they’re also more locale-dependent. Same goes for commas versus periods. Regardless, I think the grave accent is a poor choice here. Whitespace would be better, much like adjacent string literals in C. A compiler could warn by default about numeric literals crossing line boundaries in free-form languages, to catch missing punctuation. This also has the advantage of precedent in scientific literature. Unfortunately it doesn’t work in languages without some redundancy, like many in the vector family. Is this a four-vector of one-digit numbers or a one-vector of a four-digit number? [1 2 3 4]