How can I select a syntax highlighting at the (shell-) command line?

Question

Usually, vim will get the highlighting right from the file extension, but this obviously doesn't work when I'm displaying content read from standard input.

cat File.hs | some | processing | pipeline | view -

I can obtain the proper highlighting with

:set syntax=haskell

but that's awkward to do multiple times. How do I select the highlighting right at command-line invocation?

cat File.hs | vim -R {???syntax=haskell} -

Answer 1

You can use +command to execute command after the "file" is loaded:

cat File.hs | some | processing | pipeline | vim -R +'setf haskell' -