Add yaml's map to a document using yq

Question

I want to add a map (which maps a string to another string, e.g. fff: bar) to the following

aaa: hello
bbb: world
ccc: foo

so I'm using

document='aaa: hello
bbb: world
ccc: foo'
yq '. = . + {fff: bar}' <<<"$document"

but I get Error: 1:10: invalid input text "fff: bar}".

If I add a map of numbers, it works

document='aaa: hello
bbb: world 
ccc: foo' 
yq '. = . + {111: 222}' <<<"$document"

outputs

aaa: hello
bbb: world
ccc: foo
111: 222

What am I missing?

Thanks, Luca

Answer 1

You'll need to add quotes around the fff key and value:

document='aaa: hello
bbb: world
ccc: foo'
yq '. += {"fff": "bar"}' <<<"$document"
aaa: hello
bbb: world
ccc: foo
fff: bar
➜  ~
➜  ~

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I've also changed . = . + to the more readable . +=