'substring' call should be replaced with 'substringBefore'

Reports calls like s.substring(0, s.indexOf(x)) that can be replaced with s.substringBefore(x).

Using substringBefore() makes your code simpler.

The quick-fix replaces the substring call with substringBefore.

Example:

fun foo(s: String) {
    s.substring(0, s.indexOf('x'))
}

After the quick-fix is applied:

fun foo(s: String) {
    s.substringBefore('x')
}

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Kotlin, @snapshot@

Last modified: 13 July 2023