Edit: I was wrong about Github not supporting AsciiDoc
To be honest, there was never really any conscious decision to pick Markdown over AsciiDoc. It was just serendipity that when I was looking to convert a bunch of my existing Markdown notes to papers, John happened to add (at Martin Fenner's urging) pretty robust support for citations to Pandoc. Being able to use an existing .bst files and Natbib author/year syntax with existing Bibtex database files, while also using CSL to format to everything else was pretty key. The syntax only worked in Markdown at the time, so I went with that. This project just simply grew into an experiment on how to get the least hack-y looking source document for what I needed.
Basically, I had a bunch of existing Markdown stuff typed with both my phone and my computer using NValt (already using the double-backtick math syntax as a hack), and I was looking for a way to reuse all that. If I had to do conversions or had to start from scratch, I would have just started another LaTeX Document, and then this project wouldn't be here.
As an aside aside: I personally think that one shortcoming of AsciiDoc is that Markdown ended up having a more mature application ecosystem outside of the most general purpose text-editing tools. I'm thinking of something like Scrivener/Ulysses which is really great for project writing and has robust markdown support while writing. I've also recently found out that TeXpad "mysteriously" formats Markdown syntax in the editor, and builds an in-editor TOC of it. This is in addition to with rendering support in basically every note-taking tool. Sadly AsciiDoc doesn't seem to have experienced a similar growth spurt in terms of popularity amongst developers, and as a result have a bit more friction to use.
For live preview of asciidoc there are some options - http://asciidoctor.org/docs/editing-asciidoc-with-live-previ.... Among them Atom with live preview works really well.
citation: http://asciidoctor.org/docs/asciidoc-syntax-quick-reference/...
I don't have much experience with AsciiDoc, but I've encountered other limitations in writing pandoc's AsciiDoc renderer. For example, I didn't see any way to include multiple paragraphs (or other block content) in an AsciiDoc footnote. That's a deal-breaker for many academics.
I also want to emphasize something that is often not mentioned in comparisons of Markdown and AsciiDoc. As John Gruber emphasizes in his Markdown documentation, Markdown emphasizes ease of reading in source format. AsciiDoc has different priorities, and it sacrifices the readability of the source document to get them. Here's an example involving nested lists, from the AsciiDoc manual:
1. List item one.
+
List item one continued with a second paragraph followed by an
Indented block.
+
.................
$ ls *.sh
$ mv *.sh ~/tmp
.................
+
List item continued with a third paragraph.
2. List item two continued with an open block.
+
--
This paragraph is part of the preceding list item.
a. This list is nested and does not require explicit item continuation.
+
This paragraph is part of the preceding list item.
b. List item b.
This paragraph belongs to item two of the outer list.
--
Markdown equivalent: 1. List item one.
List item one continued with a second paragraph followed by an
Indented block.
$ ls *.sh
$ mv *.sh ~/tmp
List item continued with a third paragraph.
2. List item two continued with an open block.
This paragraph is part of the preceding list item.
1. This list is nested and does not require explicit item continuation.
This paragraph is part of the preceding list item.
2. List item b.
This paragraph belongs to item two of the outer list.
Note that the AsciiDoc is at least as easy to write, perhaps easier, because you don't need to worry about indentation. But the Markdown source is more readable; the indentation makes clear the structure of the list in a way that mirrors how it would be displayed in a browser or on the page.Markdown's syntax constrains how much it can ever do, whereas AsciiDoc is designed to be extensible, providing macros at the "language" level and underneath that there's the whole DocBook toolchain: it seems to me that the clever move is leverage all this, rather than create yet-another-Markdown (and it's not like the syntax tradeoff is at all dramatic.) I think the footnote issue you mention can be done in block macros, but I'm not sure.
I might be getting a bit utopian here, but what would be really great is if all these markup languages sought to have their canonical implementation in pandoc, which would allow for the standardisation of a set of pass-throughs/filters/annotations for things like equations and citations.
Thanks for pandoc, btw. Just out of interest, is there a reason you haven't attempted an AsciiDoc reader? (Or have you?) Assuming it'd be quite a bit more work than the others, what with macros and so forth.
You stated about the footnote support being a deal-breaker for many academics, the poor equation support is a deal-breaker for me. Most of what I write is full of equations, especially aligned equations. It's necessary to reference a specific equation that might be on a different page (or far above it on an HTML page).
It looks like Asciidoc has different ways of handling LaTeX equations for non-LaTeX output. It can render a PNG, it can use a Javascript solution, or it can output MathML.
Turns out, you just need to write consecutive expressions one after another. Put ampersands in all these consecutive expressions and ScholarlyMarkdown will turn it into one giant align environment. If there is no ampersands, it generates a gather environment instead.
I apologize for this not being in the documentation. After all, I estimate that it is only about 30% complete. It really is in a dismal state. I originally didn't expect much people to see the site until later this year when I plan to launch it. This will all be rectified eventually, promise!
Here is literally a large align-block example straight out of the thesis that I'm currently busy working on (instead of the documentation). You can inspect the Scholdoc-rendered LaTeX code to see that you can really do align blocks reliably with this syntax.
If you output to HTML, it will just turn this same align block into a MathJax-friendly format, and hand it off to MathJax for rendering. This is what it will look like:
http://jsfiddle.net/hzvwa139/3/
Where the equation numbering is place is entirely a non issue. Why? It's not being decided by ScholarlyMarkdown, but by MathJax. Go to the jsFiddle example above and change the line that reads
TagSide: "left",
To now read TagSide: "right",
and you get it now on the left. Scholdoc simply put those default setting there for convenience; you're not tied to it at all.Why put the number on the left side by default? Think of what happens when you have a long equation, and when you're trying to read it on a narrow screen such as a phone. If the number was on the right, it may very well be cut-off by the screen, forcing you to scroll around to find equations. Sometimes layout decisions that made sense for paper for centuries doesn't make sense for screens.
I should point out that Scholdoc is only using MathJax on the HTML side for consistency; there is no technical reason why it can't use another renderer that understands LaTeX, but so far MathJax is the only one that even comes close to supporting all standard AMS features. Note that MathJax itself does HTML/CSS, MathML, SVG, and PNG (via a node server) output, and is entirely user-configurable.
For me, MathJax can't render my equations. I use some techniques to get a vector with an arrow on the bottom. Two commands I used all throughout my thesis are:
\def \rV#1{\hbox{$#1$\kern-0.38em\lower0.85em\hbox{$\vec{}\,$}}\,}
and \def \Vec#1{\hbox{$#1$\kern-1.0em\lower0.4em\hbox{${\scriptstyle \rightarrow }$}}}
These won't work in MathJax (understandably).C'mon, nobody deserves to be subject to automatic TeX expression breaking. Even careful hand-tuning with help from the breqn package can often look pretty bad.
> Two commands I used all throughout my thesis are:
At the risk of turning this into TeX StackExchange, I just want to point out that these kerning manipulations are entirely possible in MathJax. The problem is that, maddeningly, they chose to have non-math commands like kern and lower work exclusively in math mode, and not outside one like in a hbox. Therefore, if you change your second command to something like this:
$a \kern-1em\lower0.4em\hbox{$\scriptstyle \rightarrow$}$
then it will work in MathJax. Of course, this would then break in regular TeX because you're not supposed to use kern and lower in math mode. I keep myself sober by remaining optimistic about a potential overhaul in the MathJax latex processing code.In the meantime, I think we would benefit from a stopgap service that renders these things in an actual TeX engine running on a server into high-res PNG (easy) or SVG (doubtful). There's been quite a resurgence in effort to make latex rendering into a scaleable web service lately. I'd love to collaborate with someone from, say, ShareLaTeX on that, if possible.
I know that there's dvisvgm for SVG output from DVI. I think there's also a tex2svg. Also, there's LatexRender-ng. So, there's a number of tools for SVG output.
In addition to default asciidoctor style, there are other themes available - http://themes.asciidoctor.org/preview/ (See bottom right for theme switcher).
You can also take a look at Pro Git book styles - http://git-scm.com/book/en/v2 which was written in asciidoc - https://github.com/progit/progit2
On the other hand, they also have an epub style sheet, and it appears (a little oddly) that the layout of the epub is better than the pdf.
FWIW most "heavily optimized" custom LaTeX styles I've come across tend to feel like being slapped in the face with MS Word -- and I think I've yet to encounter any that actually improve on the "standard" styles in any meaningful way (with possible exception of the APA style, which is ugly, but as it has to conform to APA, it's ugly by design. And looks better than most other APA conforming styles I've seen).
Still, having a starting point makes the job much easier -- so this is a great resource.
For an extra five minutes learning you get a boatload (think container ship) more features[1] - it compiles to DocBook: a mature, actually standardised, highly structured format, and from that you get HTML, EPUB, PDF, slideshows, and man pages for free.[0] For math you get MathML, ASCIIMath, and LaTeX (along with a number of ways to render them.) It has a super nice syntax, is equally good at little docs and huge books, and you could theoretically write a proper academic paper in it with the LaTeX backend. And you always know what's going to happen when you try to mix bold and italic...
Also endorsed by Linus.[2]