I am currently trying to use luarocks to install lua packages under wine (for testing, as it should be easier to setup and require less resources then virtual machine) and found that it for some reason uses syntax which os.execute does not accept, specifically C: & cd C:\… & …: that fails with Can't recognize 'c: ' as an internal or external command, or batch script. (actually, not that, but a message about missing directories and no rights to write, this one comes up when I use --verbose). Note that failure message contains trailing whitespace, syntax appears to be fine if I just get rid of spaces around &.