From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Brand <michael.ch.brand@gmail.com>
Subject: Re: Bug: named columns in tables not working if name contains "_"
Date: Wed, 24 Aug 2011 22:15:51 +0200
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To: Carsten Dominik <carsten.dominik@gmail.com>
Cc: =?ISO-8859-1?Q?Andr=E1s_Major?= <andras.g.major@gmail.com>, Bastien <bzg@altern.org>, nicholas.dokos@hp.com, emacs-orgmode <emacs-orgmode@gnu.org>

On Tue, Aug 23, 2011 at 20:29, Carsten Dominik
<carsten.dominik@gmail.com> wrote:
> I have checked, underscore is aceptable, calc allows it in variables names.
> However, I would not recommend adding any more characters to this regexp.

Just to mention: Although "_" is the subscript operator that takes the
nth vector element in Calc, I don't mind the change since the formula
below that uses "$vector_1" did also not work before the change
probably because some other regexp to parse the field name already
included "_". And the alternative formula with "subscr($vector, 1)"
seems to be syntactically more robust/flexible/clear/etc. anyway.

|   | [x y]  | x | x | #ERROR | x |
| ^ | vector |   |   |        |   |
#+TBLFM: @<$3 = $2_1 :: @<$4 = subscr($2, 1) :: @<$5 = $vector_1 ::
@<$6 = subscr($vector, 1)

Michael