bug#16413: 24.3.50; Inconsistent behavior of text property functions in narrowed buffer

[Nathan Trapuzzano]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> To the user, the text outside of the visible area doesn't exist at all.
> (line-number-at-pos (point-min)) should return 1 there, even though
> there are always several/many lines of text before point-min.

So maybe there should be a defcustom that says whether to number lines
according to the whole buffer or just the narrowed part.  These problems
seem far from insurmountable.