This is the pattern
highlighter, that highlights user-defined patterns.
To use this highlighter, associate patterns with styles in the
ZSH_HIGHLIGHT_PATTERNS
associative array, for example in ~/.zshrc
:
# Declare the variable
typeset -A ZSH_HIGHLIGHT_PATTERNS
# To have commands starting with `rm -rf` in red:
ZSH_HIGHLIGHT_PATTERNS+=('rm -rf *' 'fg=white,bold,bg=red')
The syntax for values is the same as the syntax of "types of highlighting" of
the zsh builtin $zle_highlight
array, which is documented in the zshzle(1)
manual page.