Hacking mime.types

[Tim Kelley]

I'm having a problem with postscript files generated by a certain application being rejected by cups as invalid (no %%Pages string)
This application fortunately also puts its name in the postscript file so they can easily be identified.

Can't I put something in mime.types, before postscript, something to the effect of:

application/postscript-other  eps string(bytes,"%%Creator: ArcInfo 8.1")

and then in mime.convs exclude it from the pstops filter that rejects it?

Problem is, I have no idea what to put in the first field there ... the man page says

string(offset,"string")
    True if bytes are identical to string

 how do I calculate the offset ... ??

I tried:

mime.types (before the postscript entry):
application/vnd.arcinfo-ps      eps string(0,"%%Creator: ArcInfo 8.1")

mime.convs
application/vnd.arcinfo-ps application/vnd.cups-raw 0 -


but looking at the logs I see
envp[24]="FINAL_CONTENT_TYPE=application/vnd.cups-postscript"


The file gets sent to the printer and the job is marked "completed" but they do not print. If I print them with -o raw they print fine.