Option to format indices in generated properties

[jakub-bochenski]

Please describe your feature request.
I want the generated properties to work with Spring Boot.

Problem is Spring Boot uses a bracket notation for list indices ([]).

Describe the solution you'd like
If we have data:

# block comments come through
person: # neither do comments on maps
    name: Mike Wazowski # comments on values appear
    pets: 
    - cat # comments on array values appear
    food: [pizza] # comments on arrays do not
emptyArray: []
emptyMap: []

it could output

# block comments come through
# comments on values appear
person.name = Mike Wazowski
​
# comments on array values appear
person.pets[0]=cat
person.food[1]=pizza

Describe alternatives you've considered
Sed the output

[jakub-bochenski]

FTR sed solution to compact spaces and bracketed indices is:

find \
  -name 'application*.yml' \
  -exec sh -c "yq -o=props {} | sed -r  -e 's/^([^=]+)\.([0-9]+)/\1[\2]/g' -e 's/^([^=]+) = /\1=/g' > \$(echo {} | sed s/.yml$/.properties/)" \; \
  -delete

[mikefarah]

Fixed in 4.42.1