Blank resolution causing problems

[Nick Barnes]

At 2005-04-09 19:33:38+0000, Gervase Markham writes:
> Developers,
> 
> The use of the value "" for "no resolution" is causing problems in 
> charting. The charting code is pretty generic (it has to be, to cope 
> with arbitrary charts) but if this value is to be used in labels, it 
> needs special-casing everywhere.
> 
> For some of the problems using "" causes, see:
> https://bugzilla.mozilla.org/show_bug.cgi?id=289697
> https://bugzilla.mozilla.org/show_bug.cgi?id=289694
> https://bugzilla.mozilla.org/show_bug.cgi?id=289691

I don't understand.  Why is the special string "" more difficult to
handle than the special string "[None]" (or "Sproink!" or "42")?

Is it just because "" has a magic truth value in Perl?

Nick B