Erlang - fwrite tilde

Question

If a string contains a ~, I can't seem to print that to standard out.

> A = "/.git".
> io:fwrite(A).
/.gitok

> B = "~/.git".
> io:fwrite(B).
** exception error: bad argument
 in function  io:format/3
    called as io:format(<0.50.0>,"~/.git",[])

How can I print a string with tildes to standard out?

Answer 1

If a string contains a ~, I can't seem to print that to standard out.

To format output, you construct a string containing format sequences that start with a ~. Erlang thinks your string contains a format sequence. If you want Erlang to output a literal ~, you can escape it with another ~:

22> io:format("~~/.git~n").
~/.git
ok