[Issue 10378] Prevent local imports from hiding local symbols

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=10378

--- Comment #27 from hsteoh at quickfur.ath.cx ---
In the discussion on the PR for this bug, #313 and #314 were mentioned as
primary candidates to be fixed in the next compiler release. I think it makes
sense to fix these module-related bugs as the goal for this release, since some
of them will be breaking changes, and it's better to break module-related stuff
once and have it work correctly from then on, than to be forced to break code
multiple times -- users would revolt.

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