[Issue 18149] New: Add a compiler trait to detect if a function is @disabled

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18149

          Issue ID: 18149
           Summary: Add a compiler trait to detect if a function is
                    @disabled
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: b2.temp at gmx.com

Although there's not much concrete application (since a call to a @disabled is
already statically checked) for now there is no way to know if a function is
@disable.

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