From mboxrd@z Thu Jan  1 00:00:00 1970
From: William Henney <whenney@gmail.com>
Subject: A table formula bug: incremental column fill with negative values
Date: Fri, 23 Apr 2010 23:03:10 -0500
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To: emacs-org <emacs-orgmode@gnu.org>

Hi all

The following is using today's git trunk of org-mode with emacs
23.1.94.1 (aquamacs 2.0preview5)

    Consider the following table

    | -8 |
    |    |
    |    |
    |    |
#+TBLFM: $1=3D@-1 - 1::@1$1=3D-8

    Evaluate formulas once (C-u C-c *):

    | -8 |
    | -9 |
    |----|
    | -1 |

    Evaluate formulas again (C-u C-c *):

    | -8 |
    | -9 |
    |----|
    |----|

    What I expected:

    |  -8 |
    |  -9 |
    | -10 |
    | -11 |

The problem always seems to start at -10. When I turn on table
debugging, it first calculates the -10 value correctly, but then fails
to recognise the -10 cell as a number when calculating the next row,
using 0 instead, which results in -1. This is because during the
intermediate formatting of the cell the minus sign in -10 abuts the
column separator: "|-10 |", and the "|-" part is then interpreted as
the beginning of an hline.

Any possibility of a fix? Just prepending a space to all calculated
negative numbers might be enough.

Cheers

Will

--=20

  Dr William Henney, Centro de Radioastronom=EDa y Astrof=EDsica,
  Universidad Nacional Aut=F3noma de M=E9xico, Campus Morelia