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
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.
Even as a copy at the end is needed, this consumes way less memory on Go 1.4.2:
```benchmark old ns/op new ns/op delta
BenchmarkParsePage 145979 139964 -4.12%
BenchmarkReplaceShortcodeTokens 633574 631946 -0.26%
BenchmarkShortcodeLexer 195842 187938 -4.04%
benchmark old allocs new allocs delta
BenchmarkParsePage 87 87 +0.00%
BenchmarkReplaceShortcodeTokens 9424 9415 -0.10%
BenchmarkShortcodeLexer 274 274 +0.00%
benchmark old bytes new bytes delta
BenchmarkParsePage 141830 141830 +0.00%
BenchmarkReplaceShortcodeTokens 35219 25385 -27.92%
BenchmarkShortcodeLexer 30178 30177 -0.00%
```
See #1148
This commit replaces the regexp driven `replaceShortcodeTokens` with a handwritten one.
It wasnt't possible to handle the p-tags case without breaking performance.
This fix actually improves in that area:
```
benchmark old ns/op new ns/op delta
BenchmarkParsePage 142738 142667 -0.05%
BenchmarkReplaceShortcodeTokens 665590 575645 -13.51%
BenchmarkShortcodeLexer 176038 181074 +2.86%
benchmark old allocs new allocs delta
BenchmarkParsePage 87 87 +0.00%
BenchmarkReplaceShortcodeTokens 9631 9424 -2.15%
BenchmarkShortcodeLexer 274 274 +0.00%
benchmark old bytes new bytes delta
BenchmarkParsePage 141830 141830 +0.00%
BenchmarkReplaceShortcodeTokens 52275 35219 -32.63%
BenchmarkShortcodeLexer 30177 30178 +0.00%
```
Fixes#1148
Before this commit, taxonomy names were hyphenated, lower-cased and normalized -- then fixed and titleized on the archive page.
So what you entered in the front matter isn't necessarily what you got in the final site.
To preserve backwards compability, `PreserveTaxonomyNames` is default `false`.
Setting it to `true` will preserve what you type (the first characters is made toupper for titles), but normalized in URLs.
This also means that, if you manually construct URLs to the archive pages, you will have to pass the Taxonomy names through the `urlize` func.
Fixes#1180
Section names are also used as the title of the list pages, but naming section folders as `Fish and Chips` and similar didn't work very well.
This commit fixes that.
This commit also changes the title casing of the section titles. Some may argue that this is a breaking change, but the old behaviour was also pretty broken,
even for languages that use title capitalizations, as it didn't follow any particular style guide, `fish and chips` became `Fish And Chips` etc.
Now it just turns the first letter into upper case, so `Fish and Chips` will be left as `Fish and Chips`.
People wanting the good old behaviour can use the `title` template func.
Fixes#1176
To determine if a page is the "Home Page" has inspired lots of creativity in the template department.
This commit makes it simpler: IsHome will tell the truth.
Setting `RelativeURLs` to `true` will make all relative URLs in the site *really* relative.
And will do so with speed.
So:
In `/post/myblogpost.html`:
`/mycss.css` becomes `../mycss.css`
The same in `/index.html` will become:
`./mycss.css` etc.
Note that absolute URLs will not be touched (either external resources, or URLs constructed with `BaseURL`).
The speediness is about the same as before:
```
benchmark old ns/op new ns/op delta
BenchmarkAbsURL 17462 18164 +4.02%
BenchmarkAbsURLSrcset 18842 19632 +4.19%
BenchmarkXMLAbsURLSrcset 18643 19313 +3.59%
BenchmarkXMLAbsURL 9283 9656 +4.02%
benchmark old allocs new allocs delta
BenchmarkAbsURL 24 28 +16.67%
BenchmarkAbsURLSrcset 29 32 +10.34%
BenchmarkXMLAbsURLSrcset 27 30 +11.11%
BenchmarkXMLAbsURL 12 14 +16.67%
benchmark old bytes new bytes delta
BenchmarkAbsURL 3154 3404 +7.93%
BenchmarkAbsURLSrcset 2376 2573 +8.29%
BenchmarkXMLAbsURLSrcset 2569 2763 +7.55%
BenchmarkXMLAbsURL 1888 1998 +5.83%
```
Fixes#1104Fixes#622Fixes#937Fixes#157
Create new field in Node
Update Page to look for lastmod field in the front matter. If not present, then assign Date to Lastmod
Update Site, to assign a value to Lastmod (based on the same logic used for Date)
Fixes#733
Pretty sure it has worked at some point, but that PR probably has been rebased to pieces.
This refactors the fix by @dannys42 into a method, as this URL fix is applied several places.
Fixes#1114
Many minor fixes to make test logs more consistent and correct a
mispelling.
Standardize on "[%i] got X but expected Y" for log messages. Using
a consistent layout makes it easier to read the test results. This
was mostly changing "Got" to "got". Swapped the order of values on
several calls to bring them in line with the convention.
A few log messages had a sequence number added to identify the
exact scenario that failed. Otherwise, there would be no way to
ascertain which failed When there are many scenarios.
Correct spelling of "expected."
Fixes#1028
Merged be2097e1ad
[close#1040]
The current menu system works great, but is too much work if all you want is a simple menu with the sections as menu items, and having these menu items connected to the pages in a way that enables setting the correct menu item as active for both the section lists and the pages itself.
This commit adds a new option `SectionPagesMenu' which, if set, will create a new menu with that name with all the sections as menu items. The pages in the sections will behave as "shadow members" of these section items as `blogpage.HasMenuCurrent "sectionmenu" $sectionmenuitem` will return true.
If a menu item with the same `identifier` is defined in site config, *that* item will take precedence.
`Paginate`now returns error when
1) `.Paginate` is called after `.Paginator`
2) `.Paginate` is repeatedly called with different arguments
This should help remove some confusion.
This commit also introduces DistinctErrorLogger, to prevent spamming the log for duplicate rendering errors from the pagers.
Fixes#993
Commit 358dcce supposedly added ".adoc" extension recognition
for AsciiDoc, but one place was missed.
Thanks to @sjfloat for reporting the bug!
See discussions at #470.
Put version handling into the helpers package so it can be used by many,
and split version and suffix to make it possible to calculate the next Hugo version.
Thanks to @bep's new, brilliant helpers.Deprecated() function,
the following functions or variables are transitioned to their
new names, preserving backward compatibility for v0.14
and warning the user of upcoming obsolescence in v0.15:
* .Url → .URL (for node, menu and paginator)
* .Site.BaseUrl → .Site.BaseURL
* .Site.Indexes → .Site.Taxonomies
* .Site.Recent → .Site.Pages
* getJson → getJSON
* getCsv → getCSV
* safeHtml → safeHTML
* safeCss → safeCSS
* safeUrl → safeURL
Also fix related initialisms in strings and comments.
Continued effort in fixing #959.
See #470
* Based on existing support for reStructuredText files
* Handles content files with extensions `.asciidoc` and `.ad`
* Pipes content through `asciidoctor --safe -`.
If `asciidoctor` is not installed, then `asciidoc --safe -`.
* To make sure `asciidoctor` or `asciidoc` is found, after adding
a piece of AsciiDoc content, run `hugo` with the `-v` flag
and look for this message:
INFO: 2015/01/23 Rendering with /usr/bin/asciidoctor ...
Caveats:
* The final "Last updated" timestamp is currently not stripped.
* When `hugo` is run with `-v`, you may see a lot of these messages
INFO: 2015/01/23 Rendering with /usr/bin/asciidoctor ...
if you have lots of `*.ad`, `*.adoc` or `*.asciidoc` files.
* Some versions of `asciidoc` may have trouble with its safe mode.
To test if you are affected, try this:
$ echo "Hello" | asciidoc --safe -
asciidoc: ERROR: unsafe: ifeval invalid
asciidoc: FAILED: ifeval invalid safe document
If so, I recommend that you install `asciidoctor` instead.
Feedback and patches welcome!
Ideally, we should be using https://github.com/VonC/asciidocgo,
@VonC's wonderful Go implementation of Asciidoctor. However,
there is still a bit of work needed for asciidocgo to expose
its API so that Hugo can actually use it.
Until then, hope this "experimental AsciiDoc support through external
helpers" can serve as a stopgap solution for our community. :-)
2015-01-30: Updated for the replaceShortcodeTokens() syntax change
2015-02-21: Add `.adoc` extension as suggested by @Fale
Conflicts:
helpers/content.go
First step to use initialisms that golint suggests,
for example:
Line 116: func GetHtmlRenderer should be GetHTMLRenderer
as see on http://goreportcard.com/report/spf13/hugo
Thanks to @bep for the idea!
Note that command-line flags (cobra and pflag)
as well as struct fields like .BaseUrl and .Url
that are used in Go HTML templates need more work
to maintain backward-compatibility, and thus
are NOT yet dealt with in this commit.
First step in fixing #959.
...
Prevent 404.html from prettifying into 404/index.html
Restore @realchaseadams's commit 348e123
"Force `UglyUrls` option to force `404.html` file name"
which got lost after some refactoring (commit 8db3c0b).
Remove the equivalent "force `UglyUrls`" code for `sitemap.xml`
because the refactored code now calls `renderAndWriteXML()`
which uses `WriteDestFile()` which does not prettify a filename.
Fixes#939 (reverted from commit c4c19ad303)
Restore @realchaseadams's commit 348e123
"Force `UglyUrls` option to force `404.html` file name"
which got lost after some refactoring (commit 8db3c0b).
Remove the equivalent "force `UglyUrls`" code for `sitemap.xml`
because the refactored code now calls `renderAndWriteXML()`
which uses `WriteDestFile()` which does not prettify a filename.
Fixes#939
Added a new Template.PrintErrors() function call,
used in hugolib/site.go#Process() so it does not clutter
up `go test -v ./...` results.
Special thanks to @tatsushid for mapping out the call trace
which makes it a lot easier to find the appropriate places
to place the Template.PrintErrors() call.
Fixes#316
The variable scope in the Go templates makes it hard, if possible at all, to write templates with counter variables or similar state.
This commit fixes that by adding a writable context to Node, backed by a map: Scratch.
This context has three methods, Get, Set and Add. The Add is tailored for counter variables, but can be used for any built-in numeric values or strings.
* Add meta author, description and generator tags
* Add Hugo version beside the logo and in the footer
* Suggest the user to run `go get -u -v` to update dependencies
* Requires Go 1.3+ rather than Go 1.1+
* Improve rendering/formatting in some places
* Add trailing slash to URLs where appropriate
* GitHub redirects all http requests to https, update accordingly
Two new configuration properties, `Paginate` (default `0`) and `PaginatePath` (default `page`) are added.
Setting `paginate` to a positive value will split the list pages for the home page, sections and taxonomies into chunks of size of the `paginate` property.
A `.Paginator` is provided to help building a pager menu.
There are two ways to configure a `.Paginator`:
1. The simplest way is just to call `.Paginator.Pages` from a template. It will contain the pages for "that page" (`.Data.Pages` will (like today) contain all the pages).
2. Select a sub-set of the pages with the available template functions and pass the slice to `.Paginate` : `{{ range (.Paginate (where .Data.Pages "Type" "post")).Pages }}`
**NOTE:** For a given Node, it's one of the options above. It's perfectly legitimate to iterate over the same pager more than once, but it's static and cannot change.
The `.Paginator` contains enough information to build a full-blown paginator interface.
The pages are built on the form (note: BLANK means no value, i.e. home page):
```
[SECTION/TAXONOMY/BLANK]/index.html
[SECTION/TAXONOMY/BLANK]/page/1/index.html => redirect to [SECTION/TAXONOMY/BLANK]/index.html
[SECTION/TAXONOMY/BLANK]/page/2/index.html
....
```
Fixes#96
When we have an absolute menu url specified in the config file
(e.g., `menu: { main: { name: "News", url: "/news" } }`),
its menu entry is generated by prefixing it with the BaseUrl.
The result is then run through prepUrl(), which uses helpers.Urlize to
convert urls such as 'My First Link' to 'my-first-link'.
The behaviour is backwards: we do not want to run helpers.Urlize on the
BaseUrl, only on the absolute component. Currently, a BaseUrl such as
'http://my.edu/ENG101' will be converted to 'http://my.edu/eng101',
resulting in broken links in all of my menus.
This commit switches the URL prep and BaseUrl prepending actions around. I
would argue that these URLs shouldn't be run through prepUrl anyway
because the site developer has specified them explicitly in a config file
and might be surprised for, e.g., URLs to change case, but that's another
commit for another time.
Setting per-page Blackfriday angledQuotes did not work
with TOML or JSON front matter, but it does work with YAML.
It turns out that page.Params("blackfriday") returns
type map[interface{}]interface{} for YAML, but
type map[string]interface{} for JSON and TOML.
This patch updates page.GetParam() to catch the latter,
with an error message if page.GetParam() does not recognize
a type. A test is also added.
canonifyUrls=true, RelPermalink and baseUrl with sub-path did not work.
This fixes that by adding a check for canonifyUrl=trues=true in RelPermalink().
So given
- baseUrl "http://somehost.com/sub/"
- the path "some-path/file.html"
For canonifyUrls=false RelPermalink() returns "/sub/some-path/file.html"
For canonifyUrls=true RelPermalink() returns "/some-path/file.html"
In the last case, the Url will be made absolute and clickable in a later step.
This commit also makes the menu urls defined in site config releative. To make them work with canonifying of urls, the context root is prepended if canonifying is turned off.
Fixes#519Fixes#711
This map can potentially be used many times for a given page, and altough the cost of re-creating the map should be minimal, caching it is simple -- and could save some GC and CPU cycles.
(Experimental) reStructuredText support was working in v0.12,
but was no longer handled after some refactoring in v0.13-DEV.
That experimental support is now restored.
Furthermore, check for both rst2html and rst2html.py in the PATH,
and execute whichever is found.
See #472 for more information.
Instead of `strings.TrimSpace()`, use `strings.Join(strings.Fields(s), " ")`
to collapse all whitespaces into single spaces, in order to match the
behaviour of helpers.TruncateWordsToWholeSentence(),
in order to detect non-truncated content correctly.
Added Version, CommitHash and BuildDate to hugolib/hugo.go and used it in build
Removed commitHash and buildDate from commands/version.go and used hugolib vars
Removed getDateFormat function from commands/version.go
Conflicts:
README.md
docs/content/templates/variables.md
This rewrites `extractFrontMatterDelims` function to make it work with
an archetype file without the final EOL and adds more detailed error
messages and comments.
It also removes `matches` and `matches_quick` functions which aren't
called anywhere.
Having correct dates is important in Hugo. Previously date parsing errors were swallowed, leading to confusing results.
This commit adds ERROR logging when date or publishdate in front matter cannot be parsed into a time.Time.
The flag `HTML_SMARTYPANTS_ANGLED_QUOTES` was added to Blackfriday on Black Friday. This configures rendering of double quotes as angled left and right quotes («
»).
Typical use cases would be either or, or combined, but never in the same
document. As an example would be a person from Norway; he has a blog in both
English and Norwegian (his native tongue); he would then configure Blackfriday
to use angled quotes for the Norwegian section, but keep them as reqular
double quotes for the English.
This commit adds configuration support for this new flag, configuration that can be set in the site configuration, but overridden in page front matter.
Fixes#605
Menu urls like /categories/новости-проекта would turn into /categories/d0bdd0bed0b2d0bed181d182d0b8-d0bfd180d0bed0b5d0bad182d0b0, which is illegal, while the directory under the categories/ is created with the original name. It results in 404 not found error.
This commit fixes that by make sure that SanitizeUrl() is called last.
Fixes#719
- `.Ref` and `.RelRef` take a reference (the logical filename for a
page, including extension and/or a document fragment ID) and return
a permalink (or relative permalink) to the referenced document.
- If the reference is a page name (such as `about.md`), the page
will be discovered and the permalink will be returned: `/about/`
- If the reference is a page name with a fragment (such as
`about.md#who`), the page will be discovered and used to add the
`page.UniqueID()` to the resulting fragment and permalink:
`/about/#who:deadbeef`.
- If the reference is a fragment and `.*Ref` has been called from
a `Node` or `SiteInfo`, it will be returned as is: `#who`.
- If the reference is a fragment and `.*Ref` has been called from
a `Page`, it will be returned with the page’s unique ID:
`#who:deadbeef`.
- `.*Ref` can be called from either `Node`, `SiteInfo` (e.g.,
`Node.Site`), `Page` objects, or `ShortcodeWithPage` objects in
templates.
- `.*Ref` cannot be used in content, so two shortcodes have been
created to provide the functionality to content: `ref` and `relref`.
These are intended to be used within markup, like `[Who]({{% ref
about.md#who %}})` or `<a href="{{% ref about.md#who %}}">Who</a>`.
- There are also `ref` and `relref` template functions (used to create
the shortcodes) that expect a `Page` or `Node` object and the
reference string (e.g., `{{ relref . "about.md" }}` or `{{
"about.md" | ref . }}`). It actually looks for `.*Ref` as defined on
`Node` or `Page` objects.
- Shortcode handling had to use a *differently unique* wrapper in
`createShortcodePlaceholder` because of the way that the `ref` and
`relref` are intended to be used in content.
File handling was broken on Windows. This commit contains a revision of the path handling with separation of file paths and urls where needed.
There may be remaining issues and there may be better ways to do this, but it is easier to start that refactoring job with a set of passing tests.
Fixes#687Fixes#660
Enable blackfriday.EXTENSION_AUTO_HEADER_IDS to generate the name of the
header ID from the text in the header. Works for prefix and underline
headers.
- TOC extraction had to be modified to look for `<li><a href="#`>
instead of `#toc_` because of this change.
- Fixed a number of tests that depended on the presence of `toc_` with
as an `id` or as a `href` value.
- Renames the earlier parameter `footnoteref` to `documentId` as it more
accurately represents the nature of the parameter. The `documentId` is
appended to all generated headers through the new HTML renderer
parameter `HeaderIDSuffix`.
Some newly added shortcode tests compared maps in assertions.
This failed on Travis, as iteration order isn't guaranteed for maps since Go 1.
This commit fixes that by do a sort of the keys in the shortcode String() function.
- Prevent `.xml` generation for root section
- Remove redundant check for DisableRSS
- Fix permalinks for rel="alternate"
- Rename generated xml file to <type>/index.xml
- Add required description element in default template
- Make default RSS template validate on w3c (timezone format is still an issue)
Conflicts:
hugolib/site.go
- Change order of HasPrefix to match correct order
- Remove theme concatenation to _internal in last loop of
appendthemetemplates so it looks in the right place for internal
templates
Conflicts:
hugolib/site.go
This commit contains a restructuring and partial rewrite of the shortcode handling.
Prior to this commit rendering of the page content was mingled with handling of the shortcodes. This led to several oddities.
The new flow is:
1. Shortcodes are extracted from page and replaced with placeholders.
2. Shortcodes are processed and rendered
3. Page is processed
4. The placeholders are replaced with the rendered shortcodes
The handling of summaries is also made simpler by this.
This commit also introduces some other chenges:
1. distinction between shortcodes that need further processing and those who do not:
* `{{< >}}`: Typically raw HTML. Will not be processed.
* `{{% %}}`: Will be processed by the page's markup engine (Markdown or (infuture) Asciidoctor)
The above also involves a new shortcode-parser, with lexical scanning inspired by Rob Pike's talk called "Lexical Scanning in Go",
which should be easier to understand, give better error messages and perform better.
2. If you want to exclude a shortcode from being processed (for documentation etc.), the inner part of the shorcode must be commented out, i.e. `{{%/* movie 47238zzb */%}}`. See the updated shortcode section in the documentation for further examples.
The new parser supports nested shortcodes. This isn't new, but has two related design choices worth mentioning:
* The shortcodes will be rendered individually, so If both `{{< >}}` and `{{% %}}` are used in the nested hierarchy, one will be passed through the page's markdown processor, the other not.
* To avoid potential costly overhead of always looking far ahead for a possible closing tag, this implementation looks at the template itself, and is branded as a container with inner content if it contains a reference to `.Inner`
Fixes#565Fixes#480Fixes#461
And probably some others.
Following issues are fixed
1. Can't access fields and methods specified in GroupBy call
2. PagesGroup doesn't contain Pages. It's always empty.
3. When GroupBy is called with Section key, it doesn't work as expected
- In `layouts/_default/taxonomy.html`, the `.Data` result does not
provide the same information that `layouts/_default/terms.html` does
for being able to identify the plural value of the term.
- This change adds `.Data.Singular` and `.Data.Plural` to provide
similar capabilities.
- This *may* be incompatible with templates that check for `{{ if ne
$taxonomy "Pages" }}` if the `page.Params` has either the singular or
plural values as keys.
…`map[string]string` to `map[string]interface{}`.
This allows values other than `string` values to be saved to Author,
such as:
```toml
# config.toml
…
[Author]
name = "Austin Ziegler"
social-site = [ "Facebook", "Twitter", "GitHub" ]
```
My specific use-case is that I’m trying to make something work similar
whether it’s specified in `.Params.Author` or in `.Site.Author` without
introducing `.Site.Params.Author`.
`GroupBy` is modified to allow it to receive a method name argument for
example `Type` as its first argument. It is only allowed to call with
a method which takes no arguments and returns a result or a pair of
a result and an error.
The functions discussed at #443 are also added
- `ByPublishDate`: Order contents by `PublishDate` front matter variable
- `GroupByPublishDate(format, order)`: Group contents by `PublishDate`
front matter variable formatted in string like `GroupByDate`
- `GroupByParam(key, order)`: Group contents by `Param` front matter
variable specified by `key` argument
- `GroupByParamDate(key, format, order)`: Group contents by `Param`
front matter variable specified by `key` argument and formatted in
string like `GroupByDate`. It's effective against `time.Time` type
front matter variable
Prior to this commit, `HasMenuCurrent` and `IsMenuCurrent` on `Node` always returned false.
This made it hard (if possible at all) to mark the currently selected menu item/group for non-Page content (home page, category pages etc.), i.e. for menus defined in the site configuration.
This commit provides an implementation of these two methods.
Notable design choices:
* These menu items have a loose coupling to the the resources they navigate to; the `Url` is the best common identificator. To facilitate a consistent matching, and to get it in line with the menu items connected to `Page`, relative Urls (Urls starting with '/') for menu items in the site configuration are converted to permaLinks using the same rules used for others’.
* `IsMenuCurrent` only looks at the children of the current node; this is in line with the implementation on `Page`.
* Due to this loose coupling, `IsMenuCurrent` have to search downards in the tree to make sure that the node is inside the current menu. This could have been made simpler if it could answer `yes` to any match of any menu item matching the current resource.
This commit also adds a set of unit tests for the menu system.
Fixes#367
TOML and YAML handles integers differently, creating issues when using integer values from configuration or front matter in the First template function.
This currently works in YAML (parses into int), but not in TOML (parses into int64).
This commit modifies First so it accepts any int.
Fixes#551
The Intersect template-method would fail if one or both of the lists were nil (post vs page; post has tags, page has not).
This commit adds a nil-check and returns an empty result if any of the inputs are nil.
See #537
If content pages are fully rendered in a list page, footnotes that use
the same reference (`[^fn]`) will have duplicated anchors. This change
builds on #526 to put the page filename (`Page.File.Name`) as part of
the anchor for a footnote.
This would fix discussion [116](http://discuss.gohugo.io/t/footnote-references-are-duplicated-on-list-pages/116).
- The config file can provide FootnoteAnchorPrefix, which will be used
by blackfriday when rendering to HTML. A value of `q:` has the effect
of making the anchor for a footnote `[^footie]` be `fn:q:footie`. The
default is `""`.
- The config file can provide FootnoteReturnLinkContents, which will be
used by blackfriday when rendering to HTML. A value of `^` has the
effect of making the return link be `^` instead of `[return]`.
Node.Site.Recent is not really just recent pages, but all pages, so I figured it was better to add a new parameter with a more informative name.
I also changed the code slightly so that all pages are added to the list of pages before we start rendering shortcodes... this way you can use a shortcode to refer to another page. Previosuly, this had been broken, because the list ofg pages would not be fully populated while the shortcodes were being processed. The code that does this is not reading from disk or doing any rendering, so it shouldn't take any more time to do.
This fixes#450. There are two problems:
1.) We're creating a new goroutine for every page.
2.) We're calling s.Pages = append(s.Pages, page) inside each goroutine.
1 is a problem if in that if you have a ton of pages, that's a ton of goroutines. It's not really useful to have more than a few goroutines at a time, and lots can actually make your code much slower, and, evidently, crash.
2 is a problem in that append is not thread safe. Sometimes it returns a new slice with a larger capacity, when the original slice isn't large enough. This can cause problems if two goroutines do this at the same time.
The solution for 1 is to use a limited number of workers (I chose 2*GOMAXPROCS as a nice guess).
The solution for 2 is to serialize access to s.Pages, which I did by doing it in a single goroutine.
