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

[Daniel Colascione]

On 01/10/2014 07:05 PM, Nathan Trapuzzano wrote:
> The various functions for examining text properties behave unintuitively
> and incosistently at (point-max) on narrowed buffers.  Rather than
> returning `nil', they return the prop(s) of the text at (point-max),
> even though the text is not actually visible in the buffer, due to
> narrowing.  By contrast, `char-after' always returns `nil' when passed
> (point-max).  It seems to me the text property functions should also
> return `nil', as they do at (eobp) on widened buffers.

I agree that this behavior is unintuitive, but I wonder whether we can 
fix this bug without breaking existing elisp.