[cups.general] STR #1923 fix incomplete?

[Tim Waugh]

The fix for STR #1923 (no way to distinguish user-set job default
options from system defaults) doesn't quite seem to fix the original
problem.

With the fix in place, there is at least a way of finding out *what* the
job default options are even for options that aren't user-set, but there
is no way to know if any given option has been set by the user or if it
is a system default.

The only hack I can think of is to experimentally alter the queue: try
removing an option and re-fetch, to see if it has changed.  But even
this would not let me discover a user-set option that has been set
(coincidentally) to the system default's value.

Let me explain why this is an issue for me: the user interface we use in
Fedora for altering these options is an add/remove type, as shown in the
attachment.  Currently this is implemented by fetching printers.conf and
parsing it for 'Option' lines, which of course requires the root
password.  The reason I filed STR #1923 is to avoid the need for the
root password when displaying the options screen.

Tim.
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