@roberto: The println thing was for debugging purposes, I actually wanted to spit it to a file, but the result was the same, just a lazyseq symbol once println worked so too did spit

spitting to a file is also a side effect

anything that does IO is a side effect

true but the spit does not need to be part of the map

my final command was actually (spit "/tmp/tst" (apply str (map map-remapping remappings)))

hmm, I’ve never used spit to write to a file. I always prefer to use io/copy

will have to try spit to see whats the difference

also, map is lazy

did you try mapv ?

I did not, however apply str did seem to give me a full material result

ok, cool