man @1.6g_0: add Xcode man pages to search path

[raimue (Rainer Müller)]

man @1.6g_0 cannot find man pages provided by Xcode, while /usr/bin/man will:

$ man -w clang
No manual entry for clang
$ /usr/bin/man -w clang
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/man/man1/clang.1

Apple ​patched /usr/bin/man to add the Xcode location to the search paths by obtaining these paths from libxcselect. Unfortunately, the macOS SDK does not include the referenced xcselect.h header file. This modified patch recreates the necessary declarations from the context of this patch.

This patch can be applied for all versions of the Mac operation system with libxcselect. As far as I know, this should be the case for >= 10.9. I added this as a variant in order to allow users to disable this feature and retain the previous behavior.

[kurthindenburg (Kurt Hindenburg)]

I would say go ahead and commit this - it worked when I tried it last - mww hasn't been active recently

[raimue (Rainer Müller)]

Port abandonment initiated: #52863

[raimue (Rainer Müller)]

In d320be82/macports-ports:

man: add Xcode man pages to search path

Closes: #52464 (maintainer timeout)

[raimue (Rainer Müller)]

In e72ae70f/macports-ports:

man: add missing patchfile after d320be8

See: #52464