Regression on merge operator

[pierrecregut]

Merge empty object with other seems to always give an empty object

Version of yq: >= 4.9.2 (4.9.1 is fine)
Operating system: linux (not tested on other)
Installed via: binary release

Input Yaml

data.yml:

source:
  a: 1
  b: 2

Command
The command you ran:

yq e '.sink = {} * .source' data.yaml

Actual behavior

source:
  a: 1
  b: 2
sink: {}

Expected behavior

source:
  a: 1
  b: 2
sink:
  a: 1
  b: 2

Additional context
None

[pierrecregut]

As a side note yq e '{} * .source' data.yml gives the right result. So the title is a little misleading: the assignment is part of the problem.

[pierrecregut]

According to git bisect commit 77edbb9 is the culprit. It is not related to {} as I thought earlier due to my initial use case, you can put whatever you want as lhs of * operator.

[mikefarah]

Thanks for the clear issue - found the bug, will be fixed in the next release

[mikefarah]

Fixed in 4.9.7