Re: The Org mode in the Org Git does not export

[Ihor Radchenko]

Rudolf Adamkovič <salutis@me.com> writes:

>> Can you
>> 1. M-x debug-on-entry <RET> org-export--generate-copy-script <RET>
>> 2. Start export
>> 3. Step into the function (use "d", not "c" binding)
>> 4. Try to identify which part (if any) is being slow
>
> FYI: I had to do "(require 'ox)" before this worked.
>
> I spent about 30 minutes pressing "d".  I saw Org sorting some character
> encodings in a large number of steps, and then it started doing a large
> number of various tasks, spending time in the AVL tree, etc.  I have no
> idea what else to do.

That's quite an involved stepping through. Thanks for your time, and sorry
for not being clear enough about what you can do!

The basic idea of this kind of test is use "d" to step-in once and then
continue with "c" until you run into a long-running function. Then, you
restart the process but also "d" into that identified function and again
continue with "c". There is no need to dig to the bottom. At least, I
expected to know if and individual call to
org-export--generate-copy-script is slow and what inside it may be
causing the slowdown.

In any case, your elp results combined with previous message when you
used "c" imply that (1) org-export--generate-copy-script is called
recursively; (2) the top-level call is taking a lot of time somehow.

This is all very strange.

Let's try to approach this problem from another direction.

Can you please set org-element-use-cache to nil and org-fold-core-style
to 'overlays in your config and try the export again?

These are two major new features that are complex enough to cause
potential issues.

If you see not improvement, we may arrange a screen session for more
interactive debugging.

> I could not figure out how to step through N times at once for N > 1.  I
> tried 'C-9 C-9 d' to step through 99 times, but that did not work.  The
> documentation for 'debugger-step-through' contains just two sentences,
> and I do not even understand the second one:
>
> "Proceed, stepping through subexpressions of this expression.  Enter
> another debugger on next entry to eval, apply or funcall."

Usually, "d" (step-in) is combined with "c" (step through).

> (The buffer also contains a header line, with e.g. "Function Name", but
> Emacs did not allow me to select and copy it for you.)

That's because it is not a part of buffer text. Just like modeline.

-- 
Ihor Radchenko,
Org mode contributor,
Learn more about Org mode at https://orgmode.org/.
Support Org development at https://liberapay.com/org-mode,
or support my work at https://liberapay.com/yantar92