Cannot capture a Table[string, string]

[xigoi]

If I understand the implementation of `capture` correctly, this is what your 
code expands to:
    
    
    import std/tables, sugar
    
    proc getProc(): (proc()) =
      var tab: Table[string, string]
      (proc(tab: auto): proc() =
        return (proc() =
          echo "Hello World"
        )
      )(tab)
    
    
    Run

So the error is not referring to the proc you’re returning, but to the proc 
generated by `capture`. If you replace the `auto` with `Table[string, string]` 
in the expanded code, it seems to work.