Clearing console prints characters instead

[Rochet2]

The following code is suggested to be used to clear the console.
The code seems to print the characters to console instead of clearing the console.
Using ubuntu 18.04.4 tested with c94cdc7 and 9c6150b

#include <stdio.h>

int main (int argc, char *argv[]) {
	printf ("Hello world!\n");
	/* try clear console */
	puts ("\033[H\033[J");
	printf("\e[1;1H\e[2J"); 
	return 0;
}

Other wasm runtimes like wasm3, wasmer and wavm seemed to clear the console as expected with both codes.
Is this something that should be supported / is a bug?

[rene-fonseca]

wasmtime filters ansi escape codes that could be used to trick/mislead users.

You can check the topic at WebAssembly/WASI#162

[Rochet2]

thanks