Dear Maintainer,

Tab completion seems to work fine for file names with special
characters. Except with newlines:

touch "$(echo -e 'a\ttab')"
touch "$(echo -e 'with-a\rcr')"
touch "$(echo -e 'but-a\nnl')"

Tab completion works fine for the first two files. But for the last one
I get:

$ echo b<tab><tab>
but-a  nl

$ echo bu<tab><tab>
but-a  nl

and so forth.

I tried '\echo' instead, just in case this is cased by a broken
completion function. But I get the same result.

I'll just note that this is a minor issue I never actually ran into in
"real life".