[aidenn0]

I ran some tests, and with zstd, brotli, and gzip, single-byte identifiers win on even slightly more complicated examples. If you have more than N identifiers (where N is the valid number of single-byte identifiers) then using short strings from the brotli dictionary seems to be at worst break-even for brotli.

Also, there seems to be a 40-byte minimum size on zstd; Making the original example significantly smaller (or larger with repeated patterns) all yielded 40 byte files. I had to change it to e.g. print(hello);foo(hello); bar(hello) to get any difference between using "x" and "hello" as an identifier.