problem generating pdf with embedded font

[Bart De Man]

Hello,

I have a problem generating pdf's from svg using the inkscape shell.

I generate multiple pdf's from multiple svg's in a single shell session.

On certain occasions, I get an error when opening the resulting pdf file. The error message is "Cannot extract the embedded font 'CairoFont-0-0'. Some characters may not display or print correctly.".
See included file b.pdf to see the error.

Steps to reproduce:
- unzip the included zip file
- install the fonts calibri.ttf and IDAutomationC128XL_0.ttf on your system
- start an inkscape shell session to generate 2 pdfs:
inkscape --shell
a.svg -A a.pdf
b.svg -A b.pdf
quit

You will now see that the resulting b.pdf is corrupt with the errormessage from above. a.pdf is a valid pdf file with the right fonts embedded.

When you execute:

inkscape --shell
b.svg -A b.pdf
quit

There is no error message! b.pdf is a valid pdf file

When you execute

inkscape --shell
b.svg -A b.pdf
a.svg -A a.pdf
quit

b.pdf is correct and a.pdf will show the error message.

When you execute
inkscape --shell
a.svg -A a.pdf
b.svg -A b.pdf
b.svg -A b2.pdf
quit

b.pdf is invalid, but a.pdf and b2.pdf are valid!

Versions:
Inkscape 0.47 r22583 (Aug 21 2010)
Linux centos-6-vagrant.vagrantup.com 2.6.32-279.19.1.el6.x86_64 #1 SMP Wed Dec 19 07:05:20 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux