A table formula bug: incremental column fill with negative values

A table formula bug: incremental column fill with negative values

[William Henney]

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=@-1 - 1::@1$1=-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

-- 

  Dr William Henney, Centro de Radioastronomía y Astrofísica,
  Universidad Nacional Autónoma de México, Campus Morelia

Re: A table formula bug: incremental column fill with negative values

[Carsten Dominik]

Hi William,

On Apr 24, 2010, at 6:03 AM, William Henney wrote:

> 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=@-1 - 1::@1$1=-8
>
>    Evaluate formulas once (C-u C-c *):
>
>    | -8 |
>    | -9 |
>    |----|
>    | -1 |
>
>    Evaluate formulas again (C-u C-c *):
>
>    | -8 |
>    | -9 |
>    |----|
>    |----|


:-) this is a nice bug.  Thanks for your report and analysis - I just
checked in a fix.

- Carsten