
Such a command word would, if not valid, fall through to the `type -w` case, where the output would be misparsed, consequently the forward-compatible [arg0] style would be used.
zsh-syntax-highlighting / highlighters
Navigate into the individual highlighters' documentation to see
what styles ($ZSH_HIGHLIGHT_STYLES
keys) each highlighter defines.
Refer to the documentation on highlighters for further information.