This changes the base16 theme back from #RRGGBB0f to #RRGGBB00,
reverting part of #934. That PR used the 0f encoding to produce ANSI
escape sequences 30-37 and 40-47 rather than 38;5 and 48;5 which require
256-color support. Unfortunately, it resulted in base16 using the wrong
colors becuase ansi_term does not support the bright variants (90-97 and
100-107) so it simply mapped them to the non-bright colors.
This PR makes combines the 00 and 0f alpha encodings into 00, and makes
them use the Color enum for the first 8 colors and Fixed otherwise. This
means the ansi-light and ansi-dark themes will work on terminals without
256-color support, and base16 will render bright colors correctly.
This adds a new `--diff` option that can be used to only show lines
close to Git changes (added/removed/modified lines). The amount of
additional context can be controlled with `--diff-context=N`.
closes#23
We used to call `less` with
``` bash
less --RAW-CONTROL-CHARS --quit-if-one-screen --no-init
```
We only passed `--no-init` because there was a bug with previous versions
of `less` which required the use of `--no-init` in combination with
`--quit-if-one-screen` to prevent this "no output" issue from happening.
Since bat 0.13, [we omit the `--no-init` option](0ecc94956b/src/output.rs (L85-L97))
if we can detect that the version of `less` is higher than or equal to 530. We
did that because `--no-init` breaks mouse support and because [less 530 fixed
the above-mentioned bug](http://www.greenwoodsoftware.com/less/news.530.html).
However, it seems that this bug was *not* fixed on Windows!
According to @gwsw, the issue should be fixed with less 559 on Windows.
closes#887
