You need to enclose in double-quotes any filespecs that are not 10.3 compatible. For example:
.COPY "/vm/miame/some directory/this is a long filename.dat" = shortname.dat
.COPY shortname.dat = "/vm/miame/some directory/this is a long filename.dat"
.COPY "/this is one/long file name.dat" = "/another/long file name.dat"
This technique should work any place you use a filespec within a program (e.g. OPEN, LOOKUP, etc.) and also on the command line of any LIT command that supports wildcards, plus a few that don't, such as VUE and TYPE. (See
Native Filespecs , which I located in the documentation index under File > specs).