Add new rule to rewrite the class signature

[fzyzcjy]

EDIT: I can workaround by avoiding writing code like this (instead let the constructor be at the same line with class name). I just want to report it so you can know that it happens, but please make this a low priority.

---

Hi thanks for the lib! For the following code, intellij idea thinks there should be 4 spaces at (message: String?) while ktlint thinks 0.

cat ~/temp/a.kt && java -jar /Users/tom/opt/ktlint-0.44.0-20220123.092956-49-all.jar ~/temp/a.kt --debug       
package hello

class MyException
    (message: String?) : RuntimeException(message)
[DEBUG] Discovered reporter with "baseline" id.
[DEBUG] Discovered reporter with "checkstyle" id.
[DEBUG] Discovered reporter with "json" id.
[DEBUG] Discovered reporter with "html" id.
[DEBUG] Discovered reporter with "plain" id.
[DEBUG] Discovered reporter with "sarif" id.
[DEBUG] Initializing "plain" reporter with {verbose=false, color=false, color_name=DARK_GRAY}
[DEBUG] Rule with id 'standard:max-line-length' should run after the rule with id 'experimental:trailing-comma'. However, the latter rule is not loaded and is allowed to be ignored. For best results, it is advised load the rule.
[DEBUG] Rules will be executed in order below (unless disabled):
           - standard:filename, 
           - standard:final-newline, 
           - standard:chain-wrapping, 
           - standard:colon-spacing, 
           - standard:comma-spacing, 
           - standard:comment-spacing, 
           - standard:curly-spacing, 
           - standard:dot-spacing, 
           - standard:import-ordering, 
           - standard:keyword-spacing, 
           - standard:modifier-order, 
           - standard:no-blank-line-before-rbrace, 
           - standard:no-consecutive-blank-lines, 
           - standard:no-empty-class-body, 
           - standard:no-line-break-after-else, 
           - standard:no-line-break-before-assignment, 
           - standard:no-multi-spaces, 
           - standard:no-semi, 
           - standard:no-trailing-spaces, 
           - standard:no-unit-return, 
           - standard:no-unused-imports, 
           - standard:no-wildcard-imports, 
           - standard:op-spacing, 
           - standard:parameter-list-wrapping, 
           - standard:paren-spacing, 
           - standard:range-spacing, 
           - standard:string-template, 
           - standard:indent, 
           - standard:max-line-length
[DEBUG] Checking /Users/tom/temp/a.kt
Resolving .editorconfig files for /Users/tom/temp/a.kt file path
Loaded .editorconfig: []
/Users/tom/temp/a.kt:1:1: class MyException should be declared in a file named MyException.kt (cannot be auto-corrected)
/Users/tom/temp/a.kt:4:1: Unexpected indentation (4) (should be 0)
[DEBUG] 784ms / 1 file(s) / 2 error(s)

[paul-dingemans]

A new rule needs to be written to format class headers accordingly to the https://kotlinlang.org/docs/coding-conventions.html#class-headers

[paul-dingemans]

Duplicates #1097, #941

[romtsn]

We should close it if it's a duplicate I think

[georgi-mirchev]

Any updates on this one?

[paul-dingemans]

Any updates on this one?

Nope. Also it is not likely to be picked up soon, at least not by me. Please feel free to contribute if you would like to have this on short term.