Re: AUCTeX PDF2DSC error on preview

[Tassilo Horn <tsdh@gnu.org>]

benwr@vt.edu writes:

Hi Ben,

>> If you have time to, you could edebug `preview-pdf2dsc-sentinel' to
>> see where exactly the error comes from.
>
> Thanks for the reply!  When I turn on debug-on-signal, I get this:
>
>> Debugger entered--Lisp error: (wrong-type-argument arrayp nil)
>>   replace-regexp-in-string("[^-0-9a-zA-Z_./\n]" "\\\\\\&" nil)
>>   shell-quote-argument(nil)
>>   mapconcat(shell-quote-argument (nil
>> "-dOutputFile=(_region_.prv/tmp1671KOM/pr1-%d.png)" "-q" "-dDELAYSAFER"
>> "-dNOPAUSE" "-DNOPLATFONTS" "-dPrinted" "-dTextAlphaBits=4"
>> "-dGraphicsAlphaBits=4" "-sDEVICE=png16m" "-r110.418x110.613") " ")
>>   preview-gs-restart()

Ah, great, now I see where the error happens.  The reason seems to be
that `preview-gs-command' is nil.  If you didn't set that explicitly,
then it seems there is neither "rungs", "mgs", "GSWIN32C.exe", nor "gs"
on your PATH.

Don't you have GhostScript installed?  That's required by preview.

Bye,
Tassilo