Extracting object values by iterating via keys causes missing items

[ryenus]

Describe the bug
Extracting object values by iterating via keys causes missing items, see the example below:

Version of yq: 4.45.2
Operating system: mac
Installed via: homebrew

Command
The command you ran:

echo '["a","b"]' | yq '. as $o | keys[] | $o[.]'

Actual behaviour

a

Expected behaviour

a
b

Additional context
The problem appears to be related to the $o[.] part, somehow it only produced the value of the first key (index 0).

However, it works when iterating over keys[] with an intermediate variable, e.g.:

• echo '["a","b"]' | yq '. as $o | keys[] | . as $k | $o[$k]'
• echo '["a","b"]' | yq '. as $o | keys[] | . as $k | $o[.]' ## $k is not even used

Both would produce the expected result mentioned above.