This uses the Emoji map from https://github.com/kyokomi/emoji -- but with a custom replacement implementation.
The built-in are fine for most use cases, but in Hugo we do care about pure speed.
The benchmarks below are skewed in Hugo's direction as the source and result is a byte slice,
Kyokomi's implementation works best with strings.
Curious: The easy-to-use `strings.Replacer` is also plenty fast.
```
BenchmarkEmojiKyokomiFprint-4 20000 86038 ns/op 33960 B/op 117 allocs/op
BenchmarkEmojiKyokomiSprint-4 20000 83252 ns/op 38232 B/op 122 allocs/op
BenchmarkEmojiStringsReplacer-4 100000 21092 ns/op 17248 B/op 25 allocs/op
BenchmarkHugoEmoji-4 500000 5728 ns/op 624 B/op 13 allocs/op
```
Fixes#1891
This commit adds a custom index template function that deviates from the stdlib
simply by not returning an "index out of range" error if an array, slice or
string index is out of range. Instead, we just return nil values. This should
help make the new default function more useful for Hugo users.
Fixes#1949
This commit fixes a few things:
1. `given` is now a variadic parameter so that piping works properly
2. add separate template tests to make sure piping works
3. support time values
4. add more tests of the dfault function
The common is the `where` func and this:
```
panic: reflect: call of reflect.Value.Type on zero Value [recovered]
panic: reflect: call of reflect.Value.Type on zero Value
```
There is no good reason to export all the template funcs:
* They're not used outside the templates.
* If usable in other packages, they should be moved (to helpers?)
* They create too broad an interface;
users of the tpl package don't see the forest for all the trees.
Add humanize (inflect.Humanize) to the template funcMap. Documentation and
tests are included.
Various code cleanups of the template funcs:
- Break pluralize and singularize out into stand-alone funcs.
- Sort the list of funcMap entries.
- Add some minimal godoc comments to all public funcs.
- Fix some issues found by golint and grind.
This fixes a exported field check condition in a way described at Go
issue https://golang.org/issue/12367
According to the issue comments, this fix should be safe under Go 1.6.
