why does ktlint wrap this line? ``` fun <T> autoClose(wrapped: T, closeFunction: suspend (T...

# ktlint

[christophsturm]

why does ktlint wrap this line?

fun <T> autoClose(wrapped: T, closeFunction: suspend (T) -> Unit): T

I get these 3 errors:

> Task :failgood:lintKotlinMain FAILED
/Users/christoph/Projects/failgood/failgood/jvm/src/failgood/dsl/ResourcesDSL.kt:25:23: Lint error > [standard:function-signature] Newline expected after opening parenthesis
/Users/christoph/Projects/failgood/failgood/jvm/src/failgood/dsl/ResourcesDSL.kt:25:35: Lint error > [standard:function-signature] Parameter should start on a newline
/Users/christoph/Projects/failgood/failgood/jvm/src/failgood/dsl/ResourcesDSL.kt:25:69: Lint error > [standard:function-signature] Newline expected before closing parenthesis

the whole line is only 73 chars long.

[Paul Dingemans]

In ktlint-official code style, the function-signature rules starts wrapping function signatures when the function contains 2 or more parameters regardless of line length. See documentation for configuration

[christophsturm]

ok. one possible improvement would be that the error message could mention that it splits because of the number of parameters.

[christophsturm]

does the idea formatter also do that or is it recommended in a style guide?

[Paul Dingemans]

No and no. ktlint_official goes beyond the style guides and puts more emphasis on consistency of code. By formatting all function signatures in a consistent way, maintenance becomes easier in my opinion. IntelliJ IDEA allows all following in same class/file:

fun foo1(a: String, b: String) = "foo"
fun foo2(
    a: String, b: String
) = "foo"
fun foo3(
    a: String,
    b: String
) = "foo"

When working with multiple developers on the same project, or when maintain a long lived project, more and more variations of function signatures are introduced. This rules, restricts the number of variations by imposing stricter rules.

[christophsturm]

i really want uniform formatting for calls but i only want it to wrap when the max line count is reached. how can i do that?

[Paul Dingemans]

See documentation for configuration