Closed
Description
Description
In case-insensitive regular expressions containing repetitions (+ or *), the repeated part is not matched correctly against differently cased characters in the string to be searched.
Reproduction
func test(_ pattern: Regex<Substring>, on s: String) throws {
print("\(s) contains \(try pattern.firstMatch(in: s)?.output ?? "no match")")
}
for s in ["ab", "Ab"] {
try test(#/ab/#.ignoresCase(), on: s)
try test(#/a*b/#.ignoresCase(), on: s)
try test(#/a+b/#.ignoresCase(), on: s)
}This snippet outputs
ab contains ab
ab contains ab
ab contains ab
Ab contains Ab
Ab contains b
Ab contains no match
Expected behavior
I would expect it to output
ab contains ab
ab contains ab
ab contains ab
Ab contains Ab
Ab contains Ab
Ab contains Ab
Environment
swift-driver version: 1.115 Apple Swift version 6.0.2 (swiftlang-6.0.2.1.2 clang-1600.0.26.4)
Target: arm64-apple-macosx15.0
Additional information
No response