Problems with the listings package

[Hoffmann, Jobst]

Hello Karl,

I wanted to prepare the next version of the listings package v1.11.

v1.11 is needed, because there is an error since v1.3b, you can see the
error by formatting the attached file list_tex.tex.

The documentation says:

stepnumber=number
All lines with “line number ≡ 0 modulo number” get a line number. If
you
turn line numbers on and off with numbers, the parameter stepnumber
will
keep its value. Alternatively you can turn them off via stepnumber=0
and
on with a nonzero number, and keep the value of numbers.

numberfirstline=true|false
The first line of each listing gets numbered (if numbers are on at all)
even if
the line number is not divisible by stepnumber.

In list_test.tex the first line of the first snippet gets wrongly a 1,
the second snippet is ok.

This error was introduced by Carsten with the patch for v1.3b (Oct.
that 2002), Matt copied this patch directly into listings.dtx v1.4, so
at least the command \lst at SetFirstNumber is contained twice. Obviously
no regression test took place.

The question is, whether I should fix the error after such a long time
and how can I assure compatibility with the current user
documents/package documentation?

While testing the different versions I found that at the moment the
file listings.dtx isn't formattable. I found the culprit in the
comparison of different flexible columns format, I attach two MWEs (one
tabular_00.dtx for .dtx-files, the other tabular_01.tex for .tex-
files), which are formattable with a pdflatex version at least from
Sep. 2024, but not with the current version. Is this incompatibility
intended or will ist be fixed? If it is intended, is there a way to use
the old documentation code?

Best wishes
Jobst
-- 
Prof. Dr. Jobst Hoffmann            Tel:   +49 (241) 6009-5 31 59
Fachhochschule Aachen Abt. Jülich   Fax:   +49 (241) 6009-5 31 89
Fachbereich 09                      email: j.hoffmann at fh-aachen.de
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