LaTeX > PDF blocked by extender chars in filename

[Eduardo Mercovich <eduardo@mercovich.net>]

Dear all.

I hope this is the right place to share this. If not, please 
forgive me for the bothering and point me to the right place.

When a referenced file has an extended character in it's filename, 
the export to pdf function ends without export nor any informative 
error.

I found it by chance... I do most of my work in spanish but I tend 
not to use spaces or extended chars (á, é, í, ó, ú, ñ at least) in 
filenames to simplify potential issues with the OS. However, today 
a "ñ" slipped by and suddently I couldn't export the document to 
pdf. I found no other information in the messages buffer than 
buffername".pdf wasn't produced". It took me some time to bisect 
the origin and finally got it. 

The file > img/ProcesoDeDiseñoDeInteraccion.pdf

was translated/inserted on the org buffer as > 
img/ProcesoDeDise%C3%B1oDeInteraccion.pdf

Is this how it's supposed to be?

Some relevant info:

+ OS: Debian 8.9
+ Emacs: GNU Emacs 24.5.1 of 2016-03-19 on trouble, modified by 
Debian
+ Org-mode: Org-mode version 8.3.4 (8.3.4-88-g792bb9-elpaplus)

locale says:
--8<---------------cut here---------------start------------->8---
LANG=es_AR.UTF-8
LANGUAGE=es_AR:es
LC_CTYPE="es_AR.UTF-8"
LC_NUMERIC="es_AR.UTF-8"
LC_TIME="es_AR.UTF-8"
LC_COLLATE="es_AR.UTF-8"
LC_MONETARY="es_AR.UTF-8"
LC_MESSAGES="es_AR.UTF-8"
LC_PAPER="es_AR.UTF-8"
LC_NAME="es_AR.UTF-8"
LC_ADDRESS="es_AR.UTF-8"
LC_TELEPHONE="es_AR.UTF-8"
LC_MEASUREMENT="es_AR.UTF-8"
LC_IDENTIFICATION="es_AR.UTF-8"
LC_ALL=
--8<---------------cut here---------------end--------------->8---

Is it any other test or info that could be useful? I'd be glad to 
help. 

Thanks a lot, as always, for such a worderful tool and community. 
:)

Best...


-- 
eduardo mercovich

 Donde se cruzan tus talentos 
 con las necesidades del mundo, 
 ahí está tu vocación. 
 (Anónimo)