#!/bin/sh
#
# Display XTERM, ANSI or VT102 colours.
#
e=`echo | tr '012' '033'`  # escape character
E="$e["                    # escape sequence

echo "${E}m Display XTERM, ANSI or VT102 colours."
echo "  {ESC}[{arg};{arg}m"
echo "    Attributes:     set=0-7    unset=20-27    (WARNING: 22 for unbold)"
echo "       normal=0  bold=1  underline=4  blink=5  invert=7  invisble=8"
echo "    Color:       foreground=30-37     background=40-47"
echo "       black=0, red, green, yellow, blue, magenta, cyan, white=7"
echo "    No arguments -- return to defaults (normal)"
echo ""
echo ""
echo \
"Fore \ Back 40       41       42       43       44       45       46       47"
for fg in 30 31 32 33 34 35 36 37; do
  line1=" $fg    "
  line2="       "
  line3="       "
  for bg in 40 41 42 43 44 45 46 47; do
    line1="${line1} ${E}${fg};${bg}m Normal ${E}0m"
    line2="${line2} ${E}${fg};${bg};1m Bold   ${E}0m"
    #line3="${line3} ${E}${fg};${bg};5m Blink  ${E}0m"
  done
  echo "$line1"
  echo "$line2"
  #echo "$line3"
done

echo "Example :-"
echo "  ${E}31;40m red(31) on black(40)"
echo "     ${E}1m bold(1)        ${E}21m unbolded(21) ${E}22m unbolded(22)"
echo "     ${E}7m inverted(7)    ${E}27m no-invert(27)"
echo "     ${E}4m underlined(4)  ${E}24m no-underline(24)"
echo "     ${E}8m invisible(8)   ${E}28m visible(28)"
echo "     ${E}43m on yellow(43)  ${E}0m normal(0)"
cat - <<EOF

XF86-xterm Notes
  Bolding actually uses a different font AND a different color.  The color can
  be turned off with a  +pc  command line option.  To turn off actual bolding,
  you need to remove the bold font setting and turn of the bold overstrike
  with the -bdc command line option.

  If the bold font is not exactly equivelent to the normal font a XF86 v4
  XTerm will NOT use it and use overstrike instead. The XF86 v3 XTerm however
  will still use the supplied bold font though 'junk' may be left and bold
  characters are erased with unbold spaces.

  Blink is NOT supported, and will be drawn with overstrike bold instead of
  the bold font. Colors will remain unchanged (see above).

EOF