Does spectrum_ls() work?

[apjanke]

I've been looking at lib/spectrum.zsh since I've been working on prompt color stuff lately.

Does the spectrum_ls() function work? It says it displays all 256 colors, but when I run it, only the first 8 or so lines are colored, and the rest are in the default color. This happens on OS X 10.9, Windows 7, and Debian 7.

Here's the implementation.

# Show all 256 colors with color number
function spectrum_ls() {
  for code in {000..255}; do
    print -P -- "$code: %F{$code}$ZSH_SPECTRUM_TEXT%f"
  done
}

Instead of using the ${FG[n]} control sequences it defined itself, it's using zsh's %F...%f prompt color controls. I don't think those support 256-color numeric codes; only the basic ANSI colors.

If I rewrite it using the control sequences instead of prompt color controls, then all 256 colors are shown as being colored.

# Show all 256 colors with color number
function spectrum_ls2() {
  for code in {000..255}; do
    print -P "$code: ${FG[$code]}$ZSH_SPECTRUM_TEXT${FX[reset]}"
  done
}

Am I missing something here?

[apjanke]

Turns out this was due to user error. I had my terminal misconfigured. $TERM was set to xterm instead of xterm-256color. Switching it to xterm-256color made the current implementation of spectrum_ls work.

I couldn't find anywhere in the Zsh reference manual that discusses 256 color support, and the doco for %F/%f talks about following it with a single ASCII digit. But maybe the documentation is just out of date.