From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Dokos <nicholas.dokos@hp.com>
Subject: Re: Bug: named columns in tables not working if name contains "_"
Date: Tue, 23 Aug 2011 09:53:47 -0400
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Cc: nicholas.dokos@hp.com, emacs-orgmode <emacs-orgmode@gnu.org>

Andr=C3=A1s Major <andras.g.major@gmail.com> wrote:


> Yet another one I just stumbled across: if I create a table and use
> "!" in the first column to assign names to the columns, I can only
> reference those columns by name in #+TBLFM: if the names don't contain
> a "_" character.  This isn't mentioned in the docs and shouldn't be
> so, IMHO.  I haven't checked for other common characters that are
> prohibited, but the "_" bites me quite a bit.
>=20

Try adding an underscore to the regexp on line 2179 of org-table.el -
something like this (untested):

          ...
	  (if (string-match "^[a-zA-Z][a-zA-Z0-9_]*$" name)
	      (push (cons name (int-to-string cnt)) org-table-column-names))))


The only characters permitted are alphanumerics. That can probably be
easily relaxed.

Nick