Below is the generated HTML for with line numbers and without line numbers, respectively.
```html
<!-- Without line numbers -->
<pre class="sourceCode scala">
<code class="sourceCode scala">
<span class="kw">trait</span>
Monad[M[_]]
</code>
</pre>
<!-- With line numbers -->
<table class="sourceCode scala numberLines">
<tr class="sourceCode">
<td class="lineNumbers">
<pre>1</pre>
</td>
<td class="sourceCode">
<pre>
<code class="sourceCode scala">
<span class="kw">trait</span>
Monad[M[_]]
</code>
</pre>
</td>
</tr>
</table>
```
The markdown used is:
```
~~~~ { .scala }
trait Monad[M[_]]
~~~~
~~~~ { .scala .numberLines}
trait Monad[M[_]]
~~~~
```
Notice that without line numbers the outer `pre` has a `sourceCode` class whereas with line numbers the `sourceCode` class is only put in `code` and table-related tags.
In the original `syntax.css` file synax highlighting was only triggered if the `kw` and friends tags were within a `pre.sourceCode` - that means it did not trigger with line numbers. This change removes the requirement for the `pre` prefix so that highlighting is triggered with or without line numbers, so long as the code is within *some* `.sourceCode` tag.
Pandoc 1.12 decouples citeproc-hs from itself, so there is no longer a
Text.Pandoc.Biblio module in Pandoc. Further, citeproc-hs depends on
pandoc-types 1.10 but Pandoc 1.12 depends on pandoc-types 1.12. To
alleviate these issues, pandoc-citeproc was created which includes a
copy of the citeproc-hs source made to be compatible, since the
developer of citeproc-hs is apparently MIA.
pandoc-citeproc is a separate module that handles the mixture of
citeproc-hs and Pandoc. It includes `processCites` in Text.CSL.Pandoc,
which is the new name of what used to be `processBiblio` from
Text.Pandoc.Biblio
Most of these changes are seamless, consisting of simple name changes in
both functions and modules. However, a more direct change in the
Hakyll API itself is that `readPandocBiblio`'s second parameter, the
CSL, is now mandatory, i.e. not of type Maybe. This is to reflect the
same change in the underlying processing function from Text.CSL.Pandoc,
`processCites`, where the Style argument is now mandatory, and the style
is derived from the CSL.
See the old function:
processBiblio :: Maybe Style -> [Reference] -> Pandoc -> Pandoc
Compared to the new one:
processCites :: Style -> [Reference] -> Pandoc -> Pandoc
Sources:
* http://hackage.haskell.org/packages/archive/pandoc/1.11.1/doc/html/Text-Pandoc-Biblio.html
* http://hackage.haskell.org/packages/archive/pandoc-citeproc/0.1/doc/html/Text-CSL-Pandoc.html
Similarly, there is no longer a `readerReferences` field in the reader
options structure.
toSiteRoot uses splitPath, joinPath, and takeDirectory from the
System.FilePath module. On Windows systems, the implementation of
joinPath will build up a path using the Windows path separator "\\".
We don't want this behavior since the paths we are working with
are always URLs, so we force POSIX behavior for System.FilePath.
Make it possible to specify the default port to listen on when the
preview server is run. This is useful if another service on the system
already runs on port 8000 (the default), since it's a hassle to keep
providing the port overriding option. For example: ./site preview vs.
./site preview -p 4000
