Unterminated single quotes may run arbitrary commands
bug: The shell does not create and error upon a wrong let binding with single quotes. It appears to run arbitrary commands, when further single quotes appear. If you are lucky, it creates a core dump.
expect: Not silently accepting a wrong grammar (for files). The REPL should also indicate, that the string is not terminated.
let a = 'ab''
ion: syntax error: unterminated single quote
interaction: Alacritty with ion
context: terminal multiplexers may prevent faster core dump