bug#17180: [PATCH] eldoc doesn't find docstrings for variable aliases

[Lars Ingebrigtsen <larsi@gnus.org>]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> +  /* If we don't have any documentation for this symbol, try to see whether
>> + it's an indirect variable and get the documentation from there
>> instead. */
>> +  if (NILP (tem))
>> +    {
>> +      Lisp_Object indirect = Findirect_variable (symbol);
>> +      if (!NILP (indirect))
>> +	tem = Fget (indirect, prop);
>> +    }
>
> In theory documentation-property can be used for any property, so it's
> not necessarily specific to variables.  IOW I think we should only do
> that if `prop` is `variable-documentation`.

Ah, makes sense.  I'll fix that up...

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