Backport "fix: allow postfix setters under language.postfixOps" to 3.7.4 #24032
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Allow for postfix operators to be followed by assigns.
This enables the definition and use of the following syntax (more
precisely the parsing of the `>_=` method as a `postfix operator +
assign`):
```scala
val v = new Vector(1, 2, 3)
println(v) // prints <1, 2, 3>
v<1> = 10 // assign 10 to element at index 1
println(v) // prints <1, 10, 3>
println(v<1>) // prints: value at 1 is 10
// Definition of Vector:
class Vector(values: Int*) {
val data = values.toArray
class Getter(i: Int) {
def `>_=`(x: Int) =
data(i) = x
def > : Int =
data(i)
}
def < (i:Int) = new Getter(i)
override def toString = data.mkString("<", ", ", ">")
}
```
[Cherry-picked de18af4]
Base automatically changed from
release-3.7.4_backport-23722
to
release-3.7.4
September 23, 2025 09:56
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Backports #23775 to the 3.7.4.
PR submitted by the release tooling.
[skip ci]