Line Feed

Line Feed is a language by User:PythonshellDebugwindow in which the only valid character is a newline. It shares a file extension (.lf) with LogicF---.

Commands

Command	Definition
(newline)	Nop

All others raise an error.

Interpreter in Python

code = "\n\n"
assert code == "\n" * len(code), "Invalid character in source code"

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Another implementation:

code = "\x01\nf\n"
assert(max(code)==min(code)=="\n")

Interpreter in Io

code := "\n\n"
if("\n" repeated(code size) == code, 0, fail)

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See also

• Definitely unusable