Tuesday 29 April 2008 5:46:45 am

Answering myself as I just got the solution :

Actually I created an override on the pagelayout:

[rss_pagelayout]
Source=pagelayout.tpl
MatchFile=rss_pagelayout.tpl
Subdir=templates
Match[viewmode]=rss_full

So that when I call a page in rss_full viewmode (or an override of it), the right pagelayout were used.

I expected the 2 Urls "/layout/set/rss/content/view/rss_full/2" and "/content/view/rss_full/2" to give the same result.
But, in facts, the content type is different and only the "layout/set/rss" will respond as text/xml.

Is that a bug, or a feature ?
Well, I understand that it's not a bug as the overrided pagelayout.tpl is to be a "text/html" content.
By the way, there's no particular need overriding the normal pagelayout if I set my url translator with "layout/set/rss" ;)