Hi Gustaf,
Thanks for your answer.
I am not sure about the configuration of the server at installation time, I need to check with Héctor on that. From what I can see, LANG is set to es_ES.UTF-8 or en_US.UTF-8 for all the users involved (aolserver one, etc), the default being es_ES.UTF-8.
Regarding setting "encoding system" from inside OpenACS, I already grep'd the whole tree when we first noticed the difference and indeed the only one that sets it is lors-central but in our case 1. we don't use it, 2. it sets it to utf-8 anyway.
Also, trying to run Brian's test case on my mac (so UTF-8 in all cases then), I noticed that "fconfigure $channel -translation binary" would use iso8859-1 unless -encoding is set. I tested with a text file, encoded using utf-8. The new file encoding is iso8859-1. Note that in the content I use spanish specific characters like "ñ".
:-S