dotfiles/shells/zsh/lib/syntax-highlighting/highlighters

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)