[Issue 20821] Aliased template method confuses overload resolution

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20821

--- Comment #4 from Basile-z <b2.temp at gmx.com> ---
The alias is more like

  template fun()
  {
    alias fun = gun;
  }

to make the shortand syntax work this is how things must be lowered.

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