Thanks !
The answer was not exactly this one but it was in symbol2list (how did I missed it ?)

using a zero-symbol as delimiter will break the symbol up into its characters.

symbol test
|
|                 symbol
|                /
symbol2list
|
|
unpack s s s s
\     \      \     \
t     e     s     t

Thanks very much !

--
Alexandre Lard

http://alexandre.lard.free.fr