Code folding in Emacs.

[tolugboji]

Emacs should develop code folding (opening and closing) to also work with the 
mouse.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Sunday, October 10th, 2021 at 8:16 AM, Hongyi Zhao <hongyi.zhao@gmail.com> 
wrote:

> I just found the following code snippet from here [1] for code folding in 
> Emacs:
>
> (global-set-key (kbd "<C-f5>") 'set-selective-display-dlw)
>
> (defun set-selective-display-dlw (&optional level)
>
> "Fold text indented same of more than the cursor.
>
> If level is set, set the indent level to LEVEL.
>
> If 'selective-display' is already set to LEVEL, clicking
>
> F5 again will unset 'selective-display' by setting it to 0."
>
> (interactive "P")
>
> (if (eq selective-display (1+ (current-column)))
>
> (set-selective-display 0)
>
> (set-selective-display (or level (1+ (current-column))))))
>
> The above code trick seems very simple, but it works for many
>
> languages. So I recommend it here.
>
> [1] https://discourse.julialang.org/t/code-folding-for-emacs/41421/3
>
> Regards
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Assoc. Prof. Hongyi Zhao hongyi.zhao@gmail.com
>
> Theory and Simulation of Materials
>
> Hebei Vocational University of Technology and Engineering
>
> No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province