Unfortunately that's a shortcoming of the gzip format itself, and isn't likely to get fixed any time soon (it's in an Internet RFC). The topic is discussed in the manual.
- Does -l option of gzip work correctly for large files (about 1... Peng Yu
- Re: Does -l option of gzip work correctly for large files... Eric Blake
- Re: Does -l option of gzip work correctly for large files... Paul Eggert
