Random underscore in emacsclient return value

[Thorsten Jolitz <tjolitz@gmail.com>]

Hi List, 

this happened a few times to me, and its hard to tell why: I do some Org
exporting, and the returned transcoded string looks like this in an
emacs buffer:

,------------------------------------------
| "(2013 6 12) (14 18) (2013 6 12) (14 18)"
`------------------------------------------

But when I call the same functionality via emacsclient from another
program, there are occasionally random underscores in the received
string:

,------------------------------------------
| "(2013 6 12) (14 18) (2013 6_12) (14 18)"
`-----------------------------------------

Did anybody witness this too? Any idea what could be the reason? How can
I find out if the space between 6 and 12 in (2013 6 12) in the orignal
Org file is special in any way? It looks like every other space in the
file ...

-- 
cheers,
Thorsten