NewContent is refactored to use the afero.Fs interface that should allow
full testing. This commit also pulls the metadata creation logic out of
NewContent and into a separate function to decrease the cyclomatic
complexity of NewContent.
The `intersect` function uses `in` to avoid adding duplicates to the
resulting set. We were passing `reflect.Value` items when we should
have been using `Value.Interface()` to send the actual data structure.
This fixes that.
See #1952
- updated the instructions to account for Windows 10 path editor
- linked to third-party editors for pre-10 Windows
- separated instructions for technical and non-technical users changed
D drive paths to C drive since D is the default optical drive on most
Windows systems
- cut the assumption about 64-bit Windows since 32-bit binary is also available
- cut the assumption about command line since we're giving GUI instructions
to non-technical users
- cut a bug in the doc where we had people typing D: at the command prompt
*after* submitting `cd D:\Hugo\Sites.` Recommend snipping 386 and AMD from
ZIP file names, since they don't add useful info and will just confuse novices.
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