Experimental ​function-type-reference-spacing rule Unexpected whitespace for anonymous functions

[ViktorPetrovski]

Expected Behavior

The rule experimental:function-type-reference-spacing is complaining with Unexpected whitespace for anonymous functions:
val annonymousFunction = fun(inString: String): String? = "Test string"

Observed Behavior

I believe that the anonymous function is properly written and should not complain about unexpected whitespace after the = operator. And removing the whitespace after the operator complains about Missing spacing after "="

Steps to Reproduce

Running Ktlin check that checks for experimental rules should reproduce this

Your Environment

• Version of ktlint used: 0.45.1
• Relevant parts of the .editorconfig settings n/a
• Name and version (or code for custom task) of integration used (Gradle plugin, Maven plugin, command line, custom Gradle task): n/a
• Version of Gradle used (if applicable): n/a
• Operating System and version: n/a

[paul-dingemans]

Tnx for reporting. Your example is correct. I was not aware that anonymous functions could be declared this way.