functions-with-overly-long-names

ITT we create a list of functions/class/modules/etc with long and verbose names. The minimum length allowed is 25 characters

From the R6RS:
make-custom-textual-input/output-port
call-with-bytevector-output-port
make-i/o-file-does-not-exist-error
bytevector-ieee-double-native-set!
port-has-set-port-position!?

>>4
Sorry for not knowing the naming conventions in your toy language.