bug#62536: 30.0.50; Can we add """ ... """ electric pair in elixir, just like python

[Wilhelm Kirschbaum]

Wilhelm Kirschbaum <wkirschbaum@gmail.com> writes:

> > > From: 牟 桐 <mou.tong@outlook.com>
> > > Date: Thu, 30 Mar 2023 04:25:07 +0000
> > > In elixir, the docs in src are like this:
> > > ``` elixir-ts-mode
> > > defmodule Foo do
> > >   @moduledoc """
> > >   Foo-related functions.
> > >   ## Examples
> > >       iex> Foo.sum(1, 2)
> > >       3
> > >   """
> > >   @doc """
> > >   Calculate the sum of two numbers.
> > >   """
> > >   def sum(a, b), do: a + b
> > > end
> > > ```
> > > In python-mode, input the continious triple quotes, it will 
> > > insert
> > > the
> > > left quotes when electric-pair-mode is on.
> > > python-mode did it here:
> > > https://github.com/emacs-mirror/emacs/blob/bfa3500c3c6e4df58978e84753718cd5358c06fb/lisp/progmodes/python.el#L6599-L6607
> > > https://github.com/emacs-mirror/emacs/blob/bfa3500c3c6e4df58978e84753718cd5358c06fb/lisp/progmodes/python.el#L6637-L6639
> > > This behavior is also very common in elixir, so can we add 
> > > this to
> > > elixir-ts-mode? thx

Will it make sense to also add a newline when closing a multiline
comment/heredoc? It feels smoother to me rather than having to 
press
enter and then C-o ( open-line ) to position the cursor correctly?

Instead of this:

(save-excursion
     (insert (make-string 2 last-command-event)))

perhaps this:

(save-excursion
     (newline)
     (insert (make-string 2 last-command-event)))
(newline)

Then the when you type

@moduledoc """

it will jump to

@moduledoc """
|
"""

instead of
@moduledoc """|"""      

I am adding two patches, one for the electric pair and another to 
fix
the issue where the point jumps to the end of a multi-line comment 
when
type `"` within the multi-line comment.

0001-Propertize-heredocs-in-elixir-ts-mode.patch
Description: Propertize heredocs

0002-Handle-electric-heredocs-pairs-in-elixir-ts-mode.patch
Description: Handle electric heredocs