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Use uv_fs_realpath() instead. It seems that uv_fs_realpath() has some problems on non-Linux platforms: - macOS and other BSDs: this function will fail with UV_ELOOP if more than 32 symlinks are found while resolving the given path. This limit is hardcoded and cannot be sidestepped. - Windows: while this function works in the common case, there are a number of corner cases where it doesn't: - Paths in ramdisk volumes created by tools which sidestep the Volume Manager (such as ImDisk) cannot be resolved. - Inconsistent casing when using drive letters. - Resolved path bypasses subst'd drives. Ref: https://docs.libuv.org/en/v1.x/fs.html#c.uv_fs_realpath I don't know if the old implementation that uses uv_chdir() and uv_cwd() also suffers from the same problems. - For the ELOOP case, chdir() seems to have the same limitations. - On Windows, Vim doesn't use anything like chdir() either. It uses _wfullpath(), while libuv uses GetFinalPathNameByHandleW().