Fix swiftIdentifier crash with empty strings
#105
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| let (head, _) = identifierCharacterSets(exceptions: exceptions) | ||
| guard let firstChar = string.unicodeScalars.first, | ||
| !string.isEmpty else { return "" } |
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string.isEmpty can't ever be false if string.unicodeScalars.first is not nil, right? If string is empty, then string.unocodeScalars.first will return nil and already make the condition fail anyway
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You'd think so, wouldn't you? Give it a try, for some absolutely bizarre reason, the isEmpty check is needed 🤷♂️
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Wait seriously?
isEmpty checks on characters, unicodeScalars is different, so that could make sense, maybe… but can't see an example
Do you mean that if we don't test isEmpty, the test on "" fails?
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It throws an exception (SIGINT or something I think)
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Just tested by cloning your branch and removing that !string.isEmpty in the condition and all test passed successfully, without SIGINT?
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Fixes SwiftGen/SwiftGen#528.