Re: Bug: __index returns truncated to one.
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- Subject: Re: Bug: __index returns truncated to one.
- From: Duncan Cross <duncan.cross@...>
- Date: 2014年4月10日 13:28:57 +0100
On Thu, Apr 10, 2014 at 1:23 PM, Dirk Zoller <duz@sol-3.de> wrote:
> I'd like to rephrase this as a bug report:
>
> Checking the current Lua reference manual, section
>
> 2.4 - Metatables and Metamethods
>
> Nothing in the description of the __index method mentions such
> truncation. The (pseudo?-)Lua code that specifies the semantics
> of "index" just returns
>
> return (h(table, key))
>
> in the relevant situation which would be
>
> __index(t,42)
>
> in above example and no truncation of the number of results is
> indicated.
When you place seemingly-redundant parentheses around a function call,
as in this line:
> return (h(table, key))
...this does indeed truncate the results to one value.
-Duncan