Forum OpenACS Development: Re: NaviServer 4.99: Issues with "rename"?
Short update: We are on the way to replace all exec ocurrences in ]po[ with "im_exec", which will include the Windows specific logic. So there is no "rename" anymore.
So I have moved the content from acs-tcl/tcl/windows-procs.tcl into this im_exec routine.
im_exec in turn calls exec, after some transformations of the arguments into a format that works with CygWin.