Redirect Streams

Question

I am trying to redirect the results of rg to comm to compare the match intersection. Fish seems to think that I will be passing a file path and and not the stream.

> comm -12 <(rg -l "\\bar\\b" | sort) <(rg -l "@" | sort)
fish: Invalid redirection target: (rg -l "\\bar\\b" | sort)
comm -12 <(rg -l "\\bar\\b" | sort) <(rg -l "@" | sort)
         ^
fish: Invalid redirection target: (rg -l "@" | sort)
comm -12 <(rg -l "\\bar\\b" | sort) <(rg -l "@" | sort)

Answer 1

comm -12 <( … ) <( … ) works in Bash but I believe the right syntax in fish is like

comm -12 ( … | psub ) ( … | psub )

Yes, psub belongs to the syntax.