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User guide, chapter 3.2.3. Forcing Interactive Input: code sample: add Kotlin version #1627

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Mar 7, 2022
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User guide, chapter 3.2.3. Forcing Interactive Input: code sample: add Kotlin version #1627

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19 changes: 19 additions & 0 deletions docs/index.adoc
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Expand Up @@ -689,6 +689,25 @@ public class Main implements Runnable {
}
----

.Kotlin
[source,kotlin,role="secondary"]
----
@Command
class Main : Runnable {
@Option(names = ["--interactive"], description = ["unattended run"], interactive = true)
var value: String? = null
override fun run() {
if (value == null && System.console() != null) {
// alternatively, use console::readPassword
value = System.console().readLine("Enter value for --interactive: ")
}
println("You provided value '$value'")
}
}

fun main(args: Array<String>) : Unit = exitProcess(CommandLine(Main()).execute(*args))
----

=== Short (POSIX) Options
Picocli supports http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html#tag_12_02[POSIX clustered short options]:
one or more single-character options without option-arguments, followed by at most one option with an option-argument, can be grouped behind one '-' delimiter.
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