When the swift source file has a double slash path, it will cause an infinite loop

[cavivie]

It works:

xcrun swift-format /Users/cavivie/Workspace/DemoSwift/Hello.swift

It does not work, and casuse an infinite loop:

xcrun swift-format /Users/cavivie/Workspace/DemoSwift//Hello.swift
xcrun swift-format /Users/cavivie/Workspace/DemoSwift/scripts/..//Hello.swift


// why candidate path output:
/Users/cavivie/Workspace/DemoSwift//Hello.swift

// I think it should be converted to:
/Users/cavivie/Workspace/DemoSwift/Hello.swift

/Users/cavivie/Workspace/DemoSwift/Hello.swift and /Users/cavivie/Workspace/DemoSwift/scripts/../Hello.swift files should be considered as one file.

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