Comment by dzaima

The decompressed output needn't be in-memory (or even on-disk; it could be directly streamed to analysis) all at the same time, at which point resource limits aren't a problem at all. And I believe --long already is a "grater than or equal to" value, and should also be effectively a memory limit (or pretty close to one at least).

Seeking back in the input might theoretically work, but I feel like that could easily get very bad (aka exponential runtime); never mind needing actual seeking.