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## Δ
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A syntax-highlighter for git.
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< table >
< tr >
< td >
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< img width = 518px style = "border: 1px solid black"
src="https://user-images.githubusercontent.com/52205/60410484-8cbb5e00-9b96-11e9-9d56-bb84ac0bce82.png"
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alt="image" />
< / td >
< td >
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< img width = 500px style = "border: 1px solid black"
src="https://user-images.githubusercontent.com/52205/60282969-230d2c80-98d6-11e9-8656-09073c8a0985.png"
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alt="image" />
< / td >
< / tr >
< / table >
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## Usage
```
delta 0.1.0
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Dan Davison < dandavison7 @ gmail . com >
A syntax-highlighter for git.
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USAGE:
delta [FLAGS] [OPTIONS]
FLAGS:
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--compare-themes Compare available syntax highlighting themes. To use this option, supply git diff output
to delta on standard input. For example: `git show --color=always | delta --compare-
themes`.
--dark Use colors appropriate for a dark terminal background. For more control, see --theme,
--plus-color, and --minus-color.
-h, --help Prints help information
--highlight-removed Apply syntax highlighting to removed lines. The default is to apply syntax highlighting
to unchanged and new lines only.
--light Use colors appropriate for a light terminal background. For more control, see --theme,
--plus-color, and --minus-color.
--list-languages List supported languages and associated file extensions.
--list-themes List available syntax highlighting themes.
-V, --version Prints version information
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OPTIONS:
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--minus-color < minus_color > The background color (RGB hex) to use for removed lines.
--plus-color < plus_color > The background color (RGB hex) to use for added lines.
--theme < theme > The syntax highlighting theme to use.
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-w, --width < width > The width (in characters) of the background color highlighting. By default, the
width is the current terminal width. Use --width=variable to apply background
colors to the end of each line, without right padding to equal width.
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```
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## Installation
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1. **Install the Rust development environment:** < br >
See https://www.rust-lang.org/tools/install.
2. **Clone this repo** < br >
3. **Build the executable:** < br >
```sh
cd delta
cargo build
```
This creates an executable inside the repo at `target/debug/delta` . Make sure this executable is found on your shell
`$PATH` .
For example, if `~/bin` is in your `$PATH` , then you could use a symlink:
```
cd ~/bin
ln -s /path/to/delta/target/debug/delta delta
```
Alternatively, you can ignore `$PATH` and use
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`/path/to/delta/target/debug/delta` in the next step.
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4. **Configure git to use delta:** < br >
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(Note that delta defaults to a dark theme, so if you're using a light terminal background, you'll want to use `--light` or `--theme=<theme-name>` .)
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Edit your `~/.gitconfig` :
```
[core]
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pager = delta
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```
Alternatively, run this command:
```
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git config --global core.pager delta
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```
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You can pass arguments to delta in your `.gitconfig` . An example is
```
[core]
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pager = delta --plus-color="#012800" --minus-color="#340001" --theme="base16-ocean.dark"
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```
Please include the `=` characters; I'm not sure why yet, but they're necessary when writing a delta command line in `.gitconfig` !
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All git commands that display diff output should now display syntax-highlighted output. For example:
- `git diff`
- `git show`
- `git log -p`
- `git stash show -p`
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## 24 bit color
delta works best if your terminal application supports 24 bit colors. See https://gist.github.com/XVilka/8346728. For example, on macos, iTerm2 works but Terminal.app does not.
If you're using tmux, it's worth checking that 24 bit color is working correctly. For example, run a color test script like [this one ](https://gist.githubusercontent.com/lifepillar/09a44b8cf0f9397465614e622979107f/raw/24-bit-color.sh ), or the others listed at https://gist.github.com/XVilka/8346728. If you do not see smooth color gradients, see the discussion at [tmux#696 ](https://github.com/tmux/tmux/issues/696 ). The short version is you need something like this in your `~/.tmux.conf` :
```
set -ga terminal-overrides ",xterm-256color:Tc"
```
and you may then need to quit tmux completely for it to take effect.
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## Credit
https://github.com/trishume/syntect< br >
https://github.com/sharkdp/bat