Re: [BUG] Source block indentation does not work properly for yaml-mode [9.6.6 ( @ /home/user/.emacs.d/elpa/org-9.6.6/)]

[Ihor Radchenko]

Sébastien Miquel <sebastien.miquel@posteo.eu> writes:

> Ihor Radchenko writes:
>> But why do we need to avoid indenting empty lines?
>
> In the following link, Greg Minshal argues for preserving empty lines:
> https://list.orgmode.org/725763.1632663635@apollo2.minshall.org/T/

Thanks for the reference!
I can see that non-empty blank line below might be annoying for some users.

\t#+begin_src lang
\t  line1
\t  line2
^\t  $
\t#+end_src

However, I do not see why Org should clear blank lines created by the
lang-mode itself

\t#+begin_src lang
\t  line1:
\t  \tline2:
^\t \t\t$
\t#+end_src

If source code in the edit buffer contains non-empty blank lines, it is
not Org's responsibility to clear them. In fact, it will go against
possible user settings!

So, I agree that we should not indent empty lines. However, I do not
agree that we should not indent non-empty blank lines.

---

The code in your patch is confusing, considering the above
considerations.

> -        (setq org-src--preserve-blank-line preserve-blank-line)
> +        (setq org-src--indent-current-empty-line (and blank-line
> +                                                      (not empty-line)))

Here, you have a variable named "empty-line" set when (not empty-line). ??

Also,

>       (while (not (eobp))
> -       (skip-chars-forward " \t")
> -          (when (or (not (eolp))                               ; not a blank 
> line
> -                    (and (eq (point) (marker-position marker)) ; current line
> +          (when (or (not (eolp)) ; not an empty line
> +                    ;; If the current line is empty, we may
> +                    ;; want to indent it.
> +                    (and (eq (point) (marker-position marker))
>                           preserve-blank-line))
>            (insert indent-str))
>         (forward-line)))

removed `skip-chars-forward' call, so the loop will always check every
bol and (not (eolp)) will be t for every line, except ^$.
Then, considering that preserve-blank-line is set when (not empty-line),
your second condition will never trigger.

I feel that something is fishy in the logic.

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
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