f73f3d53d3
Without this when bracket_color_size is 0, $(( (levelpos[$pos] - 1) % bracket_color_size + 1 )) errors with division by zero.
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.