[Bug-AUCTeX] bug#19121: AUCTeX should report an error if selected viewer fails

[Davide G. M. Salvetti]

Package: auctex
Version: 11.83
Severity: normal
Usertags: bugs.debian.org/409795

Neither `C-c C-c', nor `C-c C-v', nor `tool-bar view' appear to report
any error if the viewer selected by `TeX-view-program-selection' isn't
installed.

It would be useful if AUCTeX would check if the selected viewer is
installed on the system, falling back to some other viewer if available;
at a minimum, however, AUCTeX should give some clue to the user about
the failure to start a viewer.

This bug has been originally reported by a Debian user: see
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=409795>, in
particular items marked `0' and `2' by the original submitter.

-- 
Thanks,
Davide