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[O] Edit whole session with org-edit-src-edit

From: Yury G. Kudryashov
Subject: [O] Edit whole session with org-edit-src-edit
Date: Sun, 08 Oct 2017 18:58:49 -0400
User-agent: mu4e 0.9.18; emacs 25.3.1


I want to use orgmode for literate programming with Coq.
I like the "edit in major mode" org-edit-src-edit feature, but it
exports only the current src block to the temprorary buffer, so it's
impossible to debug the file in the temporary buffer using coq-mode
(proofgeneral) "phrase by phrase" execution.

I think that some other languages may have similar problems. Say,
code completion works better, if the whole file is available.

I propose the following feature:

1. When the temporary buffer is created,

   - the whole session (or all the code with that will go to one file
     when tangling) is written to the buffer;
   - all the code except for the current block is marked as read-only.

2. When writing the temporary buffer back to the main file, drop the
     read-only regions.

An even more useful (though may be harder to implement) version:

1. When the temporary buffer is created,

   - then whole session is written to the temporary buffer;
   - before each block, a commented line with some meta-data (original
     buffer, line range, src-block #+NAME attribute) is inserted;
   - these commented lines are made read-only, while the blocks are left

2. When writing back, each block is rewritten.

This way a user may have file headers (#include in C/C++, imports in
Python etc) in one #src block, and easily modify it while editing some
"main" code in a temporary buffer.

Unfortunately, I'm new to (e)lisp, so I'm not sure whether I'll manage
to implement these features myself.
Sincerely yours,
Yury G. Kudryashov

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