[basic.scope.scope] Update the note about special cases

[Endilll]

[basic.scope.scope] has a lengthy note about declarations that target a different scope than the scope they inhabit. This patch updates a bullet about declarations inhabiting a block scope in accordance with [dcl.meaning]/3.5 to make the note more complete:

If the declaration inhabits a block scope S and declares a function ([dcl.fct]) or uses the extern specifier, the declaration shall not be attached to a named module ([module.unit]); its target scope is the innermost enclosing namespace scope, but the name is bound in S.

[Endilll]

MacOS is failing with

/Library/TeX/texbin/tlmgr: checksum error when downloading /tmp/nUef4otpiw/wzBWoj7dcM from https://us.mirrors.cicku.me/ctan/systems/texlive/tlnet/tlpkg/texlive.tlpdb: digest disagree

I'm not sure this is my fault.

[jensmaurer]

I'm fine with adding the cross-reference.
I don't think notes need to be exhaustive or precise; they just have to be correct.
The existing note seems to be correct; if the missing mention of "function declarations" is the concern, I'm ok adding those: "Block-scope extern or function declarations..."
Other bullets in this note also talk about "larger enclosing scope".

[Endilll]

if the missing mention of "function declarations" is the concern, I'm ok adding those: "Block-scope extern or function declarations..."

Yes, this is the primary concern I have. I applied your suggestion.

Other bullets in this note also talk about "larger enclosing scope".

I see; I reverted the part about innermost namespace scope.