readline etc hotkey reminder, two versions for smaller n larger terms

hotkey_reminder.zsh

# readline etc hotkey reminder, two versions depending on tty/vty width
# https://gist.github.com/mxmilkiib/2dda9d8b62c542cf8ab32ad637930bd0

echo_color() {
  local cyan="\033[0;96m"
  local red="\033[0;91m"
  local key_color=$cyan # Cyan for hotkeys
  local desc_color=$red # Red for descriptions
  local reset="\033[0m"
  local output=""

  # Loop through arguments in pairs (key, description)
  while [[ $# -gt 0 ]]; do
    output+="${key_color}${1}${reset} ${desc_color}${2}${reset} "
    shift 2
  done

  printf "${output}\n"
}

# Function to display hotkeys based on terminal width
display_initial_hotkeys() {
  # Check terminal width and display appropriate hotkeys
  if [[ $COLUMNS -gt 120 ]]; then
    # Wider terminal layout
    echo_color "C-B    " "Move back one character      " "C-F    " "Forward a character          " "C-H    " "Delete back a character      " "C-D    " "Delete a character           "
    echo_color "A-B    " "Back to word start           " "A-F    " "Forward to word end          " "C-W    " "Delete back a word           " "A-D    " "Delete forward a word        "
    echo_color "C-A    " "Go to line start             " "C-E    " "Jump to line end             " "C-K    " "Delete to end of line        " "C-U    " "Delete entire line           "
    echo_color "C-T    " "fzf recursive file search    " "A-T    " "fzf dirs                     " "C-R    " "fzf history                  " "C-Space" "fzf multi select             "
    echo_color "gencomp cmd" "add new comp             " "**     " "extra fuzzy                  "
  else
    # Narrower Terminal Layout
    echo_color "C-B " "Back char   " "C-F " "Fwd char    " "C-H " "Del back chr" "C-D " "Del fwd chr "
    echo_color "A-B " "Back word   " "A-F " "Fwd word    " "C-W " "Del back wrd" "A-D " "Del fwd wrd "
    echo_color "C-A " "Line start  " "C-E " "Line end    " "C-K " "Del to end  "
    echo_color "C-P " "Prev line   " "C-N " "Next line   " "C-Y " "Undo line   "
  fi
}

# Function to be added to precmd_functions array. Runs only once.
_cascade_display_hotkeys_once() {
  # Check if the function exists before calling and unsetting
  if typeset -f display_initial_hotkeys > /dev/null; then
    display_initial_hotkeys
    unset -f display_initial_hotkeys
    # Remove this function itself after it runs
    unset -f _cascade_display_hotkeys_once
  fi
}

# Add our one-time function to the precmd execution hooks
precmd_functions+=(_cascade_display_hotkeys_once)