Override a base localizable.strings file

Question

Is there a way to have one base localizable.strings file for multiple targets within a project, and also have a second localizable.string file for each target that will override

Answer 1

For Swift 4 users that come across this issue...

func localizedString(
    for key: String, tableName: String = "OverrideLocalizable", 
    bundle: Bundle = .main, comment: String = ""
) -> String {
    let defaultValue = NSLocalizedString(key, comment: comment)
    return NSLocalizedString(
        key, tableName: tableName, bundle: bundle, 
        value: defaultValue, comment: comment
    )
}

Answer 2

Here is the solution I found:

NSString *PSILocalizedString(NSString *key, NSString *comment)
{
    return NSLocalizedStringWithDefaultValue(key,
                                             @"OverrideLocalizable",
                                             [NSBundle mainBundle],
                                             NSLocalizedString(key, nil),
                                             comment);
}

What this will do is search a file called OverrideLocalizable.strings for the key. If the value for key is not found in OverrideLocalizable.strings, it will search localizable.strings for key. NSLocalizedString(key, nil) by default will search localizable.strings

Pretty simple and elegant solution