should I be able to write to filenames with a pipe in them?

this code:

a = "|AB|"
File.write(a, a)

fails:

$ ruby -v bad.rb
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin18]
sh: -c: line 1: syntax error: unexpected end of file

Filenames with pipes in them are valid in linux.  Is there something
I'm missing here or is this a bug do you think?

-Roger Pack-

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