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[docs] Add support for Markdown documentation in Sphinx
Differential Revision: https://reviews.llvm.org/D44910 llvm-svn: 337509
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# Markdown Quickstart Template | ||
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## Introduction and Quickstart | ||
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This document is meant to get you writing documentation as fast as possible | ||
even if you have no previous experience with Markdown. The goal is to take | ||
someone in the state of "I want to write documentation and get it added to | ||
LLVM's docs" and turn that into useful documentation mailed to llvm-commits | ||
with as little nonsense as possible. | ||
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You can find this document in `docs/MarkdownQuickstartTemplate.md`. You | ||
should copy it, open the new file in your text editor, write your docs, and | ||
then send the new document to llvm-commits for review. | ||
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Focus on *content*. It is easy to fix the Markdown syntax | ||
later if necessary, although Markdown tries to imitate common | ||
plain-text conventions so it should be quite natural. A basic knowledge of | ||
Markdown syntax is useful when writing the document, so the last | ||
~half of this document (starting with [Example Section](#example-section)) gives examples | ||
which should cover 99% of use cases. | ||
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Let me say that again: focus on *content*. But if you really need to verify | ||
Sphinx's output, see `docs/README.txt` for information. | ||
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Once you have finished with the content, please send the `.md` file to | ||
llvm-commits for review. | ||
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## Guidelines | ||
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Try to answer the following questions in your first section: | ||
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1. Why would I want to read this document? | ||
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2. What should I know to be able to follow along with this document? | ||
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3. What will I have learned by the end of this document? | ||
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Common names for the first section are `Introduction`, `Overview`, or | ||
`Background`. | ||
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If possible, make your document a "how to". Give it a name `HowTo*.md` | ||
like the other "how to" documents. This format is usually the easiest | ||
for another person to understand and also the most useful. | ||
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You generally should not be writing documentation other than a "how to" | ||
unless there is already a "how to" about your topic. The reason for this | ||
is that without a "how to" document to read first, it is difficult for a | ||
person to understand a more advanced document. | ||
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Focus on content (yes, I had to say it again). | ||
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The rest of this document shows example Markdown markup constructs | ||
that are meant to be read by you in your text editor after you have copied | ||
this file into a new file for the documentation you are about to write. | ||
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## Example Section | ||
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Your text can be *emphasized*, **bold**, or `monospace`. | ||
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Use blank lines to separate paragraphs. | ||
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Headings (like `Example Section` just above) give your document its | ||
structure. | ||
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### Example Subsection | ||
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Make a link [like this](http://llvm.org/). There is also a more | ||
sophisticated syntax which [can be more readable] for longer links since | ||
it disrupts the flow less. You can put the `[link name]: <URL>` block | ||
pretty much anywhere later in the document. | ||
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[can be more readable]: http://en.wikipedia.org/wiki/LLVM | ||
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Lists can be made like this: | ||
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1. A list starting with `[0-9].` will be automatically numbered. | ||
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1. This is a second list element. | ||
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1. Use indentation to create nested lists. | ||
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You can also use unordered lists. | ||
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* Stuff. | ||
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+ Deeper stuff. | ||
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* More stuff. | ||
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#### Example Subsubsection | ||
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You can make blocks of code like this: | ||
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``` | ||
int main() { | ||
return 0; | ||
} | ||
``` | ||
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As an extension to markdown, you can also specify a highlighter to use. | ||
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``` C++ | ||
int main() { | ||
return 0; | ||
} | ||
``` | ||
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For a shell session, use a `console` code block. | ||
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```console | ||
$ echo "Goodbye cruel world!" | ||
$ rm -rf / | ||
``` | ||
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If you need to show LLVM IR use the `llvm` code block. | ||
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``` llvm | ||
define i32 @test1() { | ||
entry: | ||
ret i32 0 | ||
} | ||
``` | ||
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Some other common code blocks you might need are `c`, `objc`, `make`, | ||
and `cmake`. If you need something beyond that, you can look at the [full | ||
list] of supported code blocks. | ||
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[full list]: http://pygments.org/docs/lexers/ | ||
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However, don't waste time fiddling with syntax highlighting when you could | ||
be adding meaningful content. When in doubt, show preformatted text | ||
without any syntax highlighting like this: | ||
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. | ||
+:. | ||
..:: :: | ||
.++:+:: ::+:.:. | ||
.:+ : | ||
::.::..:: .+. | ||
..:+ :: : | ||
......+:. .. | ||
:++. .. : | ||
.+:::+:: : | ||
.. . .+ :: | ||
+.: .::+. | ||
...+. .: . | ||
.++:.. | ||
... | ||
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##### Hopefully you won't need to be this deep | ||
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If you need to do fancier things than what has been shown in this document, | ||
you can mail the list or check the [Common Mark spec]. Sphinx specific | ||
integration documentation can be found in the [recommonmark docs]. | ||
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[Common Mark spec]: http://spec.commonmark.org/0.28/ | ||
[recommonmark docs]: http://recommonmark.readthedocs.io/en/latest/index.html |
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