>> a space character is not allowed in a url; user agents that read one usually represent it in percent encoded form (`%20`). if you use that, things also work for direct links, which i assume caused the problem (for both the links in the original description render correctly): `\[[http://dada.pink/scarsdale/Statement%2020140527.pdf]]` renders [[http://dada.pink/scarsdale/Statement%2020140527.pdf]].
>>
>> spaces are allowed in internal pages because wiki page names are not urls per se but converted using conversion rules -- this allows people to not think about url rules and just link to pages, but when you're linking outside ikiwiki, some strings just aren't valid urls. --[[chrysn]]