1f1ad09e38
The preceding commit, which made docs/highlighters.md and highlighters/README.md distinct, allows reverting their removal.
78 lines
2.6 KiB
Markdown
78 lines
2.6 KiB
Markdown
zsh-syntax-highlighting / highlighters
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======================================
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Syntax highlighting is done by pluggable highlighters:
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* `main` - the base highlighter, and the only one [active by default][1].
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* `brackets` - [matches brackets][2] and parenthesis.
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* `pattern` - matches [user-defined patterns][3].
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* `cursor` - matches [the cursor position][4].
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* `root` - highlights the whole command line [if the current user is root][5].
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* `line` - applied to [the whole command line][6].
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[1]: highlighters/main.md
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[2]: highlighters/brackets.md
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[3]: highlighters/pattern.md
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[4]: highlighters/cursor.md
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[5]: highlighters/root.md
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[6]: highlighters/line.md
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How to activate highlighters
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----------------------------
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To activate an highlighter, add it to the `ZSH_HIGHLIGHT_HIGHLIGHTERS` array in
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`~/.zshrc`, for example:
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ZSH_HIGHLIGHT_HIGHLIGHTERS=(main brackets pattern cursor)
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By default, `$ZSH_HIGHLIGHT_HIGHLIGHTERS` is unset and only the `main`
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highlighter is active.
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How to tweak highlighters
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-------------------------
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Highlighters look up styles from the `ZSH_HIGHLIGHT_STYLES` associative array.
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Navigate into the [individual highlighters' documentation](highlighters/) to
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see what styles (keys) each highlighter defines; the syntax for values is the
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same as the syntax of "types of highlighting" of the zsh builtin
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`$zle_highlight` array, which is documented in [the `zshzle(1)` manual
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page][zshzle-Character-Highlighting].
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[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
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Some highlighters support additional configuration parameters; see each
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highlighter's documentation for details and examples.
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How to implement a new highlighter
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----------------------------------
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To create your own `myhighlighter` highlighter:
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* Create your script at
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`highlighters/${myhighlighter}/${myhighlighter}-highlighter.zsh`.
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* Implement the `_zsh_highlight_myhighlighter_highlighter_predicate` function.
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This function must return 0 when the highlighter needs to be called and
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non-zero otherwise, for example:
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_zsh_highlight_myhighlighter_highlighter_predicate() {
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# Call this highlighter in SVN working copies
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[[ -d .svn ]]
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}
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* Implement the `_zsh_highlight_myhighlighter_highlighter` function.
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This function does the actual syntax highlighting, by modifying
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`region_highlight`, for example:
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_zsh_highlight_myhighlighter_highlighter() {
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# Colorize the whole buffer with blue background
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region_highlight+=(0 $#BUFFER bg=blue)
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}
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* Activate your highlighter in `~/.zshrc`:
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ZSH_HIGHLIGHT_HIGHLIGHTERS+=(myhighlighter)
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