yq omit document dividers (---) in result

Question

In yq 4.11.2, If I do this:

echo '---\nfoo: foo\n---\nfoo: foo\n' | yq eval '.foo' -

I get this:

foo
---
foo

Using yq only (not grep, awk, etc.), how can I remove the --- to get this?

foo
foo

Answer 1

There is a problem with your echo invocation, that it does not expand literal newline characters by default, unless you run with echo -e or enable xpg_echo shell option if you are running this on bash/zsh

mikefarah/yq implementation has a mode -N that prints the filter output with out the document separators See yq --help when tested on version 4.13.3

echo -e '---\nfoo: foo\n---\nfoo: foo\n' | yq -N e '.foo' -
foo
foo