[O] [Feature request] LaTeX blocks preview

[edgar]

Hello,

I would like to ask if it is possible to preview latex blocks. Something 
like this (replace EXPORT with SRC, if you wish):

        #+BEGIN_EXPORT latex
        \begin{align}
          I_{0}
          & > \max{(\lambda_{f}^{2})}
          \\
          & > 2^{2}
          \\
          I_{0} & > 4
        \end{align}
        #+END_EXPORT

to be previewed in the same way as

        \begin{align}
          I_{0}
          & > \max{(\lambda_{f}^{2})}
          \\
          & > 2^{2}
          \\
          I_{0} & > 4
        \end{align}

- Rationale :: the LaTeX blocks have improved highlighting and editing 
commands than pure Org-mode, they can be folded (hidden?) in Org-mode 
and some extra options can be activated when exporting. Many times, it 
is needed to preview the equations before actually exporting.

- Related ::
  - org-edit-latex-mode
    There is org-edit-latex-mode, but it requires  some extra work:
    1. org-edit-special (C-')
    2. org-edit-latex-preview-at-point (C-c C-p C-p)
    3. org-edit-src-exit (C-')

    Besides, the preview does not stay in the original Org-mode buffer, 
but it's lost with step 3.

Please? Thank you!

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