Comment 3 for bug 349547

Why must matching regarding the 1284DeviceID be case insensitive?

As far as I know the values in the sub-strings in 1284DeviceID
are exactly the sequence of characters which is spit out
by the printer hardware when device discovery (e.g. via USB) happens.

David,
could you provide (preferably via an official public developer documentation)
how exactly model matching must be implemented (preferably with example
code e.g. in C or via command line tools like grep and sed)?