first head_comment is removed from output about yq HOT 2 CLOSED

In 4.41.1 you can now do:

yq '
{"software": { "config":  (
    # merge top level object values into a new map
    .[] as $entry ireduce   ({}; 
        . * $entry
    )
    # process comments, set value to default
    | with_entries(
        .key headComment = "-- " + .value.description
        | .value = .value.default // ""
    )
) }}'

from yq.

The reason the head_comment is removed is because yq has some workarounds on pre-processing headers, you can turn this off by using the "--header-preprocess". Alternatively, you can do this in a single expression like so:

yq '
{"software": { "config":  (
.[] as $entry ireduce   ({}; 
    . * $entry
)
| to_entries 
| with(.[]; 
    .key headComment = "-- " + .value.description
    | .value = .value.default // ""
)
| from_entries 
) }}'

Explanation:

• Use reduce to create a new map, based on the children of top level LOG_LEVEL/FEATURE_FLAG map
• Go through each of the entries, add the headComment to the key and set the value to be the default

This has actually revealed a bug in the with_entries operator, so I've manually done to_entries / with / from_entries to work around it. I'll fix the with_entries bug for the next release.

from yq.