The custom sort functions used from the templates had some subtle data race- and related issues,
especially when used in the single page template.
This commit fixes this by making copies and protect the read and writes with a RWMutex.
The results are cached (it will typically be invoked *number of pages* times with exactly the same data).
This is, not surprisingly, also faster:
```
benchmark old ns/op new ns/op delta
BenchmarkSortByWeightAndReverse 14228 491 -96.55%
benchmark old allocs new allocs delta
BenchmarkSortByWeightAndReverse 1 0 -100.00%
benchmark old bytes new bytes delta
BenchmarkSortByWeightAndReverse 32 0 -100.00%
```
Fixes#1293
The documentation for the RSS templating is a little unclear.
http://gohugo.io/templates/rss/
Some users may attempt to look for a ```__internal``` directory rather than assume that's the aforementioned "Hugo own template."
Here's my suggestion.
This commit adds a new PygmentsCodeFences config option (default false), which if true will allow GitHub style backtick code fences around code, which will then be rendered by Pygments.
For example:
``` language
your code
```
can be used instead of {{< highlight language >}}your code {{< /highlight >}}.
Fixes#362
Previously if no language was specified, then illegal args would be passed to pygments, for example `pygments -l -fhtml`, which would result in pygments printing an error.
I could be wrong here, but it looks to me like .Site.Social.facebook is used in tpl/template_embedded.go, but the variable is never set. I've added a line to initializeSiteInfo to map the info from config into this variable.
In particular, RawContent() excludes the metadata header.
This is necessary in the use case of embedding remarkjs.com slides, as it needs
the unprocessed Markdown content to generate the slides.
`where` template function's internal condition check function always
returns `false` when a target value doesn't exist or it's nil value but
this behavior makes it difficult to filter values which doesn't have a
particular parameter.
To solve it, this adds nil value comparison to the function.
`where Values ".Param.key" nil` like clause can be used for the case
above.
Only "=", "==", "eq", "!=", "<>", "ne" operators are allowed to be used
with `nil`. If an other operator is passed with `nil`, the condition
check function returns `false` like before.
Fix#1232
There have been some changes to the ´helpers.GetThemesDirPath()´ so it now returns an empty string when no theme.
This is correct, but it broke the watch service (at lest on OSX), as `strings.HasPrefix("", "somestring") evaluates to true somehow, and content changes are incorrectly branded as static.
There are other issues in there, but that will come later ...
See #1236
