Example of a Swift file that breaks swiftformat --self remove

swiftformat_noself.sh

swiftformat --self remove tmp.swift

tmp.swift

import UIKit

/// Something about this `override var text` breaks swiftformat if it's present when trying to format the file.
/// Comment it out, and the setupView method below gets all the `self` references stripped.
class DangerField: UITextField {
    override var text: String? {
        get {
            return nil
        }

        set(newValue) {}
    }
}

class SomeView: UIView, UITextFieldDelegate {
    fileprivate func setupView() {
        self.addSubview(self.numberField)
        self.addSubview(self.dateField)
        self.addSubview(self.cvcField)
        self.addSubview(self.postalCodeField)

        self.addConstraint(NSLayoutConstraint(item: self, attribute: .top, relatedBy: .equal, toItem: self.numberField, attribute: .top, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self, attribute: .leading, relatedBy: .equal, toItem: self.numberField, attribute: .leading, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self, attribute: .trailing, relatedBy: .equal, toItem: self.numberField, attribute: .trailing, multiplier: 1, constant: 0))

        self.lineSpacingConstraint = NSLayoutConstraint(item: self.dateField, attribute: .top, relatedBy: .equal, toItem: self.numberField, attribute: .bottom, multiplier: 1, constant: self.lineSpacing)
        self.lineSpacingConstraint!.priority = UILayoutPriorityDefaultHigh
        self.addConstraint(self.lineSpacingConstraint!)

        self.addConstraint(NSLayoutConstraint(item: self.dateField, attribute: .top, relatedBy: .equal, toItem: self.cvcField, attribute: .top, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self.dateField, attribute: .top, relatedBy: .equal, toItem: self.postalCodeField, attribute: .top, multiplier: 1, constant: 0))

        self.addConstraint(NSLayoutConstraint(item: self, attribute: .leading, relatedBy: .equal, toItem: self.dateField, attribute: .leading, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self.dateField, attribute: .trailing, relatedBy: .equal, toItem: self.cvcField, attribute: .leading, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self.cvcField, attribute: .trailing, relatedBy: .equal, toItem: self.postalCodeField, attribute: .leading, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self.postalCodeField, attribute: .trailing, relatedBy: .equal, toItem: self, attribute: .trailing, multiplier: 1, constant: 0))

        self.addConstraint(NSLayoutConstraint(item: self.dateField, attribute: .width, relatedBy: .equal, toItem: self.cvcField, attribute: .width, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self.dateField, attribute: .width, relatedBy: .equal, toItem: self.postalCodeField, attribute: .width, multiplier: 1, constant: 0))

        self.addConstraint(NSLayoutConstraint(item: self, attribute: .bottom, relatedBy: .equal, toItem: self.dateField, attribute: .bottom, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self, attribute: .bottom, relatedBy: .equal, toItem: self.cvcField, attribute: .bottom, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self, attribute: .bottom, relatedBy: .equal, toItem: self.postalCodeField, attribute: .bottom, multiplier: 1, constant: 0))

        self.lineHeightConstraint = NSLayoutConstraint(item: self.numberField, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: self.lineHeight)
        self.addConstraint(self.lineHeightConstraint!)

        self.addConstraint(NSLayoutConstraint(item: self.numberField, attribute: .height, relatedBy: .equal, toItem: self.dateField, attribute: .height, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self.numberField, attribute: .height, relatedBy: .equal, toItem: self.cvcField, attribute: .height, multiplier: 1, constant: 0))
        self.addConstraint(NSLayoutConstraint(item: self.numberField, attribute: .height, relatedBy: .equal, toItem: self.postalCodeField, attribute: .height, multiplier: 1, constant: 0))

        self.updateCardImage()
    }
}