OK, at some point I see they started adding AppleWebKit/# to the User-Agent. On a device running iOS 6.1, I am seeing "536.26". In WebCore.framework it reports "6536.26" (at some point they dropped the leading "6" from versions).
It looks to just be missing the final version component, as even versions of iOS 6.0.x have that same version. So, I went and got the code from opensource.apple.com and started bisecting for the version... the code is totally different.
I don't think you understand the situation here: the iOS version of WebCore is not developed in public, and lots of parts of it are redacted. Even in the code dumps from Apple on opensource.apple.com, some of the code is a .a file.
To demonstrate this, as maybe it still isn't clear what is going on, Apple released iOS 6.0 in September of 2012. Apple released the source code for the iOS 6.0 version of WebCore, and it includes a special "platforms/ios" folder.
This folder contains files like ClipboardIOS.h. If we look in the WebKit source code repository, this file did not get "upstreamed" until May of 2013. You simply can't tag something if it isn't even in the source code repository.
(Interestingly, when Apple did finally provide this source code, they also provided the corresponding ClipboardIOS.mm: they did not on opensource.apple.com, and instead provided ClipboardIOS.o as part of libWebCore_armv7.a.)
I hadn't considered that you were focused on historical versions of WebKit as I was thinking of the latest shipping versions. You're quite correct about this for historical versions of iOS. Since then the iOS port of WebKit has been upstreamed into the WebKit SVN repository, and the WebCore content in the tags correspond exactly to the source that's built.
It looks to just be missing the final version component, as even versions of iOS 6.0.x have that same version. So, I went and got the code from opensource.apple.com and started bisecting for the version... the code is totally different.
I don't think you understand the situation here: the iOS version of WebCore is not developed in public, and lots of parts of it are redacted. Even in the code dumps from Apple on opensource.apple.com, some of the code is a .a file.
To demonstrate this, as maybe it still isn't clear what is going on, Apple released iOS 6.0 in September of 2012. Apple released the source code for the iOS 6.0 version of WebCore, and it includes a special "platforms/ios" folder.
This folder contains files like ClipboardIOS.h. If we look in the WebKit source code repository, this file did not get "upstreamed" until May of 2013. You simply can't tag something if it isn't even in the source code repository.
http://trac.webkit.org/changeset/150049
(Interestingly, when Apple did finally provide this source code, they also provided the corresponding ClipboardIOS.mm: they did not on opensource.apple.com, and instead provided ClipboardIOS.o as part of libWebCore_armv7.a.)