zsh-syntax-highlighting/highlighters/README.md
2015-11-24 06:06:16 +00:00

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zsh-syntax-highlighting / highlighters
======================================
Syntax highlighting is done by pluggable highlighters:
* [`main`](main) - the base highlighter, and the only one active by default.
* [`brackets`](brackets) - matches brackets and parenthesis.
* [`pattern`](pattern) - matches user-defined patterns.
* [`cursor`](cursor) - matches the cursor position.
* [`root`](root) - triggered if the current user is root.
* [`line`](line) - applied to the whole command line
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 and
non-zero otherwise, 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)