formulas not undone back to LaTeX when editing re-opened draft

[eudoxos]

When re-opening draft e-mail (or sent e-mail, then selecting "Edit as new"), old formulas will not be converted back to LaTeX source, instead they remain as images in the text. I am not sure whether it is a bug on my side or design decision/issue of LatexIt.

[protz]

This is not unfeasible, but clearly requires more energy that what's
done already. LatexIt has its own undo stack, which is basically a
stack of closures. Re-editing a saved draft creates a completely new
Javascript environment, so naturally, the undo stack does not persist.
What you could do is:

• add a class on all latexit-generated images
• add an item on the compose window context menu that's enabled when
  you right-click on an image that has the right class,
• the associated action would be: take the image, and replace it with a
  text node that contains its alt text (the alt text is the original
  formula).

A little bit of work, but nothing that can't be solved over a week-end.
I'm waiting for your patch! :-)

(I'm swamped with other stuff so I don't have any more time/energy to
devote to LatexIt).

On Tuesday, September 06, 2011 2:23:55 PM, eudoxos wrote:

When re-opening draft e-mail (or sent e-mail, then selecting "Edit as new"), old formulas will not be converted back to LaTeX source, instead they remain as images in the text. I am not sure whether it is a bug on my side or design decision/issue of LatexIt.

[eudoxos]

Thanks for your comments, I will have a look. I have unfortunately no experience with javascript, but hope python skills will not betray me. I will first just try to find all IMG nodes in the DOM which have ALT text beginning with $, that's a reasonable approach I guess.

[drevicko]

It may be a good idea to use this approach instead of / in combination with, the undo stack, as strange effects can occur if you, for example, "latexit" an email, delete one of the images, then try to use "undo latexit" - I found that latex generated images after the deleted images were not undone.