On Mon, Dec 07, 2020 at 03:24:36PM +0100, pietru@caramail.com wrote:

[...]

> > => "ma: 15 mb: 26"
> 
> Hmmm. Variables local to function.

Yes. "Local" meaning here either dynamical extent (called functions
"see" the variables up the call chain, think Unix shells) or
lexical extent (code contexts "see" the variables of enclosing
code contexts (think C or Java or...), depending on whether you
chose lexical binding [1].

[...]

> > ...would you expect it to change the number 15 to whatever the word's
> > beginning position is? You would mess up maths with that :)
> 
> Yes, it would mess up.

Gödel's nothing against that :-D

Cheers

[1] Cf. Chapter "Lexical Binding" in the Elisp manual, or here
    https://www.gnu.org/software/emacs/manual/html_node/elisp/Lexical-Binding.html

 - t