Can we use ktlint as formatter as an alternative to the default ktfmt?

[Nyaacinth]

The main reason for posting this is ktfmt's configurability (As mentioned here by Google (ref); pointed out by ktfmt's README)

Especially when you are writing IJ Compose codes, it produces something like this:

fun main() = application { Window(title = "Conna", onCloseRequest = ::exitApplication) { App() } }

This is not expected as it produces a lot of wrapping without any line ending, and I cannot config anything, even max-line-length to prevent this. 😔

Expected:

fun main() = application {
    Window(title = "Conna", onCloseRequest = ::exitApplication) {
        App()
    }
}

[LucasAlfare]

Have you tried set the propper comands in formatter section of the kotlin language? Following example is my config for custom Rust formatting but you can put the target commands using your external formatter as following:

"languages": {
      "Rust": {
      "tab_size": 2,
      "formatter": {
        "external": {
          "command": "rustfmt",
          "arguments": ["--edition", "2024", "--emit", "stdout"]
        }
      }
    }
}

Share your results. ^^

[notpeter]

Untested, but I think you should be able to use ktlint with:

  "languages": {
    "Kotlin": {
      "formatter": {
        "external": {
          "command": "ktlint",
          "arguments": [
            "--format",
            "--stdin",
            "--stdin-path={buffer_path}"
          ]
        }
      }
    }
  }

Similarly, you can use ktfmt as an external formatter and to choose one of the built in style options with:

{
  "languages": {
    "Kotlin": {
      "formatter": {
        "external": {
          "command": "java",
          "arguments": [
            "-jar",
            "./ktfmt-0.54-jar-with-dependencies.jar",
            // "--meta-style",      // Use 2-space block indenting (default)
            // "--google-style",    // Google internal style (2 spaces)
            // "--kotlinlang-style" // Kotlin language guidelines style (4 spaces)
            "--stdin-name={buffer_path}",
            "-"
          ]
        }
      }
    }
  }
}

#26 (comment)