When I press tab for autocomplete in bash I get: "Cannot parse arguments: unknown option -r"

Question

My tab key's autocomplete function is not working. Instead, it spits out this error message: Cannot parse arguments: unknown option -r

Answer 1

If you run set -x, the shell will print everything it is running, so you can figure out what command is malformed. Then if you run complete with no arguments, you can also see what completion commands have been configured. One of them obviously has a syntax error.