Is the dash required in "special-filename parsing"?

[Zoli]

Is the dash required in "special-filename"?

The computer application performs some special-filename parsing.

 

[emsr2d2]

As long as "special" and "filename" are connected in whatever you're talking about, then yes. If you mean "special parsing" of "filenames", then no.
I have no idea what a "special filename" is or why it needs to be parsed but I'm sure someone here understands the jargon.

 

[Skrej]

I'm fairly sure there is no connection, it's just that the application creates a unique filename following a particular set of naming conventions. As emsr2d2 mentions, in that case don't hyphenate.