![]() Interpretation of build numbers is more controversial, and has now reached a new height of opacity: apply this RSR to build number 22E261 and it becomes 22E772610a. Perhaps this has come as a surprise to the engineers maintaining Foundation. ![]() That’s why, for the moment, none of my apps can tell you which RSRs are installed, except where they already give the full string. Until it does, developers are left parsing the full string despite the documentation for operatingSystemVersionString specifically stating “this string is not appropriate for parsing.” returns the full string, such as “Version 13.3.1 (a)”, but the OperatingSystemVersion structure doesn’t yet have a component containing the RSR label. Similarly, those accessing ist will find a new key-value pair ofįor coding in Swift, though, extracting the RSR version is obscure. If you use the command tool sw_vers, then its main result now includes an additional line Or would we see a Mac with both RSRs installed as having macOS 13.3.1 (ab), or (a)(b)? Are the letters intended to reset with each patch version change, so that the first RSR to 13.4 would be 13.4 (a), or are they continuous, making that 13.4 (b), assuming that no further RSRs are released for 13.3.1?Īt least Apple has modified some calls that provide macOS information to accommodate this change. Perhaps the least appropriate would have been to introduce letters and punctuation marks other than the stop/period already used, and that’s exactly what Apple has chosen by making this first RSR 13.3.1 (a).Īlthough we all hope that RSRs won’t prove frequent, Apple hasn’t revealed whether they would then be incremental, with (b) including the changes in (a) in addition to its new fixes. One logical solution might have been to extend it to a fourth digit, making last week’s RSR 13.3.1.1. This new version numbering system introduced with Big Sur doesn’t provide for RSRs. I still dread thinking about the confusion that brought. This replaced the more chaotic scheme in which the major version number was fixed at 10, and security updates often ended up as numbered Supplemental Updates.
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