Cannot grep special devices such as /dev/urandom

[kenorb]

What version of ripgrep are you using?

ripgrep 0.8.1

What operating system are you using ripgrep on?

macOS High Sierra

Bug

This works:

$ rg . </etc/hosts
##
# Host Database

---

This doesn't:

$ rg . < /dev/urandom

or more practical example:

$ rg -uuu -o abc < /dev/urandom

It seems it fallback into searching the current folder.

However this syntax work:

$ cat /dev/urandom | rg -uuu -o abc

---

I believe it should work similar as other tools, e.g.

$ strings </dev/urandom | head
Q)CD
h`m3
+xRF:?

$ grep . </dev/urandom # GNU grep
Binary file (standard input) matches

[BurntSushi]

This is a bug, but I do not believe it can be fixed in a way that doesn't produce more serious bugs. The simplest work-around is to create a pipe: cat /dev/urandom | rg ..

See also:

• ab0d1c1
• rg exits with 1 when ran from within neovim #35
• Usage with vim/neovim and fzf.vim #81