zsh-syntax-highlighting / highlighters

Syntax highlighting is done by pluggable highlighters:

main - the base highlighter, and the only one active by default.
brackets - matches brackets and parenthesis.
pattern - matches user-defined patterns.
cursor - matches the cursor position.
root - triggered if the current user is root.

How to activate highlighters

To activate an highlighter, add it to the ZSH_HIGHLIGHT_HIGHLIGHTERS array in ~/.zshrc, for example:

ZSH_HIGHLIGHT_HIGHLIGHTERS=(main brackets pattern cursor)

How to tweak highlighters

Highlighters look up styles from the ZSH_HIGHLIGHT_STYLES array. Navigate into each highlighter directory to see what styles it defines and how to configure it.

How to implement a new highlighter

To create your own myhighlighter highlighter:

Create your script at highlighters/myhighlighter/myhighlighter-highlighter.zsh.
Implement the _zsh_highlight_myhighlighter_highlighter_predicate function. This function must return 0 when the highlighter needs to be called, for example:
```
  _zsh_highlight_myhighlighter_highlighter_predicate() {
    # Call this highlighter in SVN repositories
    [[ -d .svn ]]
  }
```
Implement the _zsh_highlight_myhighlighter_highlighter function. This function does the actual syntax highlighting, by modifying region_highlight, for example:
```
  _zsh_highlight_myhighlighter_highlighter() {
    # Colorize the whole buffer with blue background
    region_highlight+=(0 $#BUFFER bg=blue)
  }
```

Activate your highlighter in ~/.zshrc:

  ZSH_HIGHLIGHT_HIGHLIGHTERS+=(myhighlighter)