bug#19717: 24.4.50; printing.el still uses ps-eval-switch

[Jorge A. Alfaro-Murillo]

Hi Vinicius,

I was trying to modify the variable pr-txt-switches for printing, 
but it is not working. I think that the problem is that the 
function pr-switches tries to use ps-eval-switch, which was 
removed from ps-print.el (see commit 
2cdeb903c57126d3ad5f0cbd72e182584b76ee29).

The problem for pr-txt-print can be fixed by using 
lpr-print-region instead of lpr-region, since the former uses 
switches as an argument. I could submit a patch for that, but I 
think that pr-switches is used for other things as well, so I 
wanted to let you know since you probably can submit a more 
complete patch.

Best,

--

Jorge.