@DJMcMayhem Clearing LANG. It's usually set to en_US.UTF8.

Linux is appending 0a 07 to the output, and WSL was doing 07 "output" 0a. I was using head -c -1 to remove the trailing newline (but didn't know about the 07) so that would explain the trailing newline on TIO

Although Try it online! just appends the trailing newline (on both WSL and linux), so I'm guessing that there's an error somewhere in vim, triggering the bell, and WSl and linux handle the bell differently

Could you pull the dev version? The newline issue should be fixed, but I'm still a bit worried about the encoding. I'd like to test the program Á. in particular, which should append a "." to the input

@DJMcMayhem Pulled the rewrite.