i found the problem, and unfortunately it's not that we were looking for. the memory increase was due to (load-texture) and printing the error messages. printing the long strings increased the buffer size of the repl. and load-texture was caching the files by filename, even when they were not found. this is now fixed in git.The next thing would be to write a small c program to replacate this and post it to the racket list.
best, gabor
