wrong error message for previous-error

[Holger Schurig]

When I start a fresh emacs and issue M-X previous-error, then the 
error message is "no next-error capable buffer found". It should 
either be more specific, e.g. "no previous-error capable buffer 
found" or less specific "no error jumping capable buffer found".


Rationale:

I got trapped by this error message when I tries to customize my 
Emacs 22.0.90.1. Not an Emacs expert yet, I did not knew how to 
specify Shift-F8 in my .emacs file. The line

(global-set-key [F8] 'next-error)

worked correctly. But then I tried the following lines, one after 
the other:

(global-set-key [S-F8] 'previous-error)
(global-set-key [s-F8] 'previous-error)
(global-set-key [\?S-F8] 'previous-error)
(global-set-key [\?s-F8] 'previous-error)
(global-set-key (kbd "S-<f8>") 'previous-error)

and stopped and started emacs. Pressing Shift-F8 always yielded 
a "no next-error capable buffer found" error message, so I 
thought that none of my tries got it correct, that 
always "next-error" was executed.