e165f18c75
The escaped caret was taken for a negated character class. This caused test-data/arith1.zsh to XPass: the arithmetic expansion was consumed by the 'while' loop.
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.