bug#47757: 13.0.6; Point position after indent-for-tab-command with LaTeX-syntactic-comments

[Gustavo Barros]

Hi Tassilo,

On Wed, 14 Apr 2021 at 05:28, Tassilo Horn <tsdh@gnu.org> wrote:

> I was able to reproduce the behavior by your very good recipe.
> Basically, I like the behavior to move point to the actual comment 
> text
> but the combination with `electric-indent-mode' is indeed very 
> annyoing.
> I've changed it on our git master so that it'll jump after the % only 
> if
> the currently executing interactive command is an indentation command
> (and not, e.g., `TeX-newline').
>
> Here's the changed definition.  Please eval it and see if you spot 
> some
> raw edges.

Thank you very much for looking into this.

I've tested (lightly) the new definition, it does indeed fixes the 
interaction with `electric-indent-mode' and, as far as I can tell, 
introduces no other problems, and leaves no "raw edges" I could spot.

So it was intended behavior after all!  But, still, now that I became 
aware of it, I'm a little baffled by it.  I'm on the verge of asking you 
to make this configurable, but I'm still not sure about it.  Is this 
behavior indeed new?  My git-blame-fu, which is not very good, says it 
is pretty old.  But I really don't recall ever noticing it, perhaps it 
is just the age of that little piece between the keyboard and the 
chair...

To be a little more precise, I do like it to be able to move to the 
beginning of the comment content, just as you do.  As a matter of fact, 
I use a local variant of package `mwim' for the purpose.  But I'm not 
sure this is something I'd expect (or like) `indent-for-tab-command' (& 
friends) to do.  Also, I don't really get why this behavior should 
depend on `LaTeX-syntactic-comments'.  True, its docstring says it 
"influences the behavior indentation and filling", but I'd assume this 
means the end result of the indentation and filling in the buffer, not 
quite a difference in point behavior.  Regarding the later, why being 
"handled according to LaTeX syntax" means point is left at the beginning 
of the comment content instead of at the end of whitespace?  In other 
words, isn't "performing inner or outer indentation" (to use the 
terminology in `LaTeX-current-indentation') something different from 
"where to place point after indenting"?

Anyway, if this is old behavior and users are already familiar with it, 
it is certainly the case that I'll eventually get used to it too, and 
tampering with it is inadvisable.  And, even if it is new(ish), feel 
free to let the last couple of paragraphs just slide away.  Unless you 
happen to think there is something interesting in those observations, in 
which case I'm happy to discuss further.

Thanks again for the quick response and fix!

Best regards,
Gustavo.