On 23/12/2019 01:59, Michael Clark wrote: > git doesn’t really support large files that well either so I’ll have to keep that in mind... I presume you are thinking of the Git-for-Windows (GfW) implementation here, where 'sizeof(long)'=32 bits, so currently the GfW is limited to 2/4GB file sizes. The limitation is partly due to the zlib library API which uses 'long' for stream sizes, though does have 'pointer*' file sizing, and hence follows the Microsoft 32->64 bit transition approach. However zlib is able to handle larger files when the deflation/inflation is done in chunks of less than 'size(long)'. On the 'Linux' version the limit is a 64 bit address and file size, so probably not a real issue on those platforms ;-) There has been a body of work on the change to using size_t for Git file sizes, but such a change is extensive and may not be acceptable because of the size of the code churn. I (and others!) had been looking at it https://github.com/git-for-windows/git/pull/2179. Hope that helps clarify the large file support limitation on Windows. Philip