Hi all,

the attached patch solves the problem of having hexified strings in hte 
vCard export. It happens when you are entering tel: links and phone 
numbers that start with `+`. The plus sign causes the link insert helper 
to hexify the url.

In tel: links the plus makes sense for international numbers. The C-c 
C-l helper makes that

[[tel:%-encoded glibberish][tel:+49 xxx]]

with the %-encoded part ending up in vCards. Which my phone accepts but 
does not dial properly. So far I cleaned them manually but this seems a 
better solution.

Cheers,

Simon