(I hope these comments help resolve the ongoing issues. I am not an administrator here and am only trying to understand the differences between the submissions.)

For your reference, the a copy of the licence, file named COPYING, linked at an external website at https://savannah.nongnu.org/task/?16414#comment3 is included below:

---

Flex carries the copyright used for BSD software, slightly modified
because it originated at the Lawrence Berkeley (not Livermore!) Laboratory,
which operates under a contract with the Department of Energy:

Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007 The Flex Project.

Copyright (c) 1990, 1997 The Regents of the University of California.
All rights reserved.

This code is derived from software contributed to Berkeley by
Vern Paxson.

The United States Government has rights in this work pursuant
to contract no. DE-AC03-76SF00098 between the United States
Department of Energy and the University of California.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.

This basically says "do whatever you please with this software except
remove this notice or take advantage of the University's (or the flex
authors') name".

Note that the "flex.skl" scanner skeleton carries no copyright notice.
You are free to do whatever you please with scanners generated using flex;
for them, you are not even bound by the above copyright.

---

The current submitted file has a licence that states the following (in file LICENSE):

---

                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

[GNU v3 licence text follows]

---

It looks like a relicensing to me, from a BSD-like licence to a GNU GPL v3.

- Is it allowed to state 'All rights reserved' in a licence file?
- Is this allowed to change a licence like this? Perhaps someone has a copy with the old licence on it.
- Have other authors of flex, if anyone contributed other than yourself, been consulted about this?
- The present submission, in error.c file, has a author line " 2023 Gianluca Graziadei - Stefano Scanzio"; the external website stated "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007 The Flex Project." and "Copyright (c) 1990, 1997 The Regents of the University of California. All rights reserved." in the COPYING file, and "In 2001, Will Estes took over as maintainer of flex.

John Millaway is a co-author of the current version of flex. He has
contributed a large number of new features, fixed a large number of
outstanding bugs and has made significant contributions to the flex
documentation.

Aaron Stone has contributed several bug fixes to the flex codebase.

Vern Paxson wrote flex with the help of many ideas and much
inspiration from Van Jacobson.  Original version by Jef Poskanzer.

The fast table representation is a partial implementation of a design
done by Van Jacobson.  The implementation was done by Kevin Gong and
Vern Paxson." in AUTHORS file

- Noting the external website linked in https://savannah.nongnu.org/task/?16414#comment3 has a completely different software program, the contents of the .c files do not match; are these two softwares related? Please clarify.
- Perhaps the above is a good reason to choose another name for this software, that is, not "flex"? Perhaps FlexLibrary, flexlibrary, flex-library, flexlib, or libflex might be more suitable.
- Is it flex (as linked at https://savannah.nongnu.org/task/?16414#comment3 comment) or flet (as titled here)?

Thank you.

I checked and the problems seem solved. Can you check and list which are?

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Registration Details

• Name: flet - evaluator of arithmetic floating point expressions
• System Name:  flet
• Type: non-GNU software and documentation
• License: GNU General Public License v3 or later (GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007)

---

Description:

Evaluate arithmetic floating point expressions written in C and Bison for parser and Flex for scanner. This library is oriented to work with Bash.
Evaluate each ARG as an arithmetic expression. Each expression ends with semicolumn. The following list of operators is grouped into levels of equal-precedence operators. The levels are listed in order of decreasing precedence.
id++, id-- variable post-increment, post-decrement
++id, --id variable pre-increment, pre-decrement
-, + unary minus, plus
!, ~ logical and bitwise negation
** exponentiation
*, /, % multiplication, division, remainder
+, - addition, subtraction
<<, >> left and right bitwise shifts
<=, >=, <, > comparison
==, != equality, inequality
& bitwise AND
^ bitwise XOR
| bitwise OR
&& logical AND
|| logical OR
boolean_exp ? scalar_exp : scalar_exp conditional operator
=, *=, /=, %=,
+=, -=, <<=, >>=,
&=, ^=, |= assignment
id=scalar_exp|boolean_exp
acos(scalar_exp) computes arc cosine.
acosh(scalar_exp) computes arc hyperbolic cosine.
asin(scalar_exp) computes arc sine.
asinh(scalar_exp) computes the hyperbolic of arc sine of an argument.
atan(scalar_exp) computes the arc tangent of an argument.
atan2(scalar_exp) computes the arc tangent of an argument.
atanh(scalar_exp) computes arc hyperbolic tangent.
cbrt(scalar_exp) computes cube root of a number.
ceil(scalar_exp) computes the nearest integer greater than argument.
cos(scalar_exp) computes the cosine of an argument.
cosh(scalar_exp) computer hyperbolic cosine.
exp(scalar_exp) computes the exponential raised to the argument.
fabs(scalar_exp) computes absolute value.
floor(scalar_exp) calculates the nearest integer less than argument.
hypot(scalar_exp) computes hypotenuse.
log(scalar_exp) computes natural logarithm of an argument.
log10(scalar_exp) computes the base 10 logarithm of an argument.
pow(scalar_exp) Computes power of a number.
sin(scalar_exp) compute sine of a number.
sinh(scalar_exp) computes the hyperbolic sine of an argument.
sqrt(scalar_exp) computes square root of a number.
tan(scalar_exp) computes tangent.
tanh(scalar_exp) computes the hyperbolic tangent of an argument.

GitHub repository: https://github.com/GGraziadei/flet

Other Software Required:

- Bison (parser)  GNU General Public License https://www.gnu.org/software/bison/
- "Flex carries the copyright used for BSD software, slightly modified
because it originated at the Lawrence Berkeley (not Livermore!) Laboratory,
which operates under a contract with the Department of Energy:" complete license https://github.com/westes/flex/blob/master/COPYING
https://github.com/westes/flex

Tarball URL:

https://savannah.nongnu.org/submissions_uploads/9QBOku-flet.tar.gz