Implement algorithm2e bindings

[brucemiller]

[Originally Ticket 1557, reported by cheshirekow]

I would like to request that the algorithm2e package be implemented for latexml.

[brucemiller]

From CTAN:
Algorithm2e is an environment for writing algorithms in LaTeX2e.
An algorithm is defined as a floating object like figures.
It provides macros that allow you to create different sorts of key
words, thus a set of predefined key words is given. You can also
change the typography of the keywords.'

The CTAN page is here: http://ctan.org/tex-archive/macros/latex/contrib/algorithm2e/
The package maintainer: http://www.lirmm.fr/~fiorio/miscellaneous/algorithm2e.html
Documentation from the latest release: http://www.lirmm.fr/~fiorio/files/misc/Algorithm2e-4.01/algorithm2e.pdf

[brucemiller]

I've tried to read the documentation for latexml to understand if I have the skills to write the binding myself but I don't think I do. What I would hope from the post processor is that it creates a div for the algorithm which is styled with a fixed width, borders, and auto left,right margins (centered on the page) so that it looks like the "float" generated from latex or pdflatex.

[brucemiller]

I added a very primitive proof-of-concept implementation. The result can be viewed : here. Some minor details are on the Mailing List.

[dginev]

We should merge in and expand on cheshirekow's work before the LaTeXML 0.8 release.

[dginev]

But from a tactical perspective, let's bump to 0.9 as it's not a core priority and we want to add some modifications to "do things right" here.

[binarez]

I'm not exactly sure how to signify that I would really like this feature implemented so I'll just say it here in this comment. 👍

Discussion on tex.sx

[dginev]

Thanks for speaking up @binarez , we hear you!

[pirofti]

Is there even an experimental algorithm2e binding that I can test? I could not get the one I wrote to define and pass the @float and end@float undefined errors:

Error:undefined:\@float The token T_CS[\@float] is not defined.
algorithm2e.sty.ltxml.txt

[brucemiller]

On 05/01/2017 06:44 AM, Paul Irofti wrote: Is there even an experimental algorithm2e binding that I can test? I could not get the one I wrote to define and pass the @float <https://github.com/float> and ***@***.*** undefined errors:

Funny you should mention that. I recently was looking at your binding, and the docs, and experimenting with the newer approach to let algorithm2e.sty do most of the work, with some clever low-level latexml-specific stuff. It actually mostly works, but for one deep problem. algorithm2e relys on \afterpar and *lots* of \par in order to number lines, indent, draw lines, etc. Unfortunately, it uses lots of redundant \par's; Real TeX ignores \par when it's already in vertical mode. Alas, LaTeXML currently only understands text and math modes, so it generates a bunch of blank lines and junk. There's a couple of Tricky Bits to that, but it's being thought about; so watch this space...