Added Cyg-Win

Agent-Windows/OGP64/usr/share/screen/colortest.sh

@@ -0,0 +1,79 @@
+#!/bin/bash
+
+# Adapted from:
+# - 256color2.pl by Todd Larason <jtl@molehill.org>
+# - https://github.com/termstandard/colors
+# By Andrew Schulman <andrex.e.schulman@gmail.com>
+
+# System colors (range 0-15)
+
+echo System colors:
+for ((color = 0; color < 8; ++color)) ; do
+	printf "\033[48;5;${color}m  "
+done
+printf "\033[0m\n"
+for ((color = 8; $color < 16; color++)) ; do
+	printf "\033[48;5;${color}m  "
+done
+printf "\033[0m\n\n"
+
+# Color cube (range 16-231)
+
+echo Color cube, 6x6x6:
+for ((g = 0; g < 6; ++g)) ; do
+	for ((r = 0; r < 6; ++r)) ; do
+		for ((b = 0; b < 6; ++b)) ; do
+			color=$(( 16 + 36*r + 6*g + b ))
+			printf "\033[48;5;${color}m  "
+		done
+		printf "\033[0m "
+	done
+	echo
+done
+echo
+
+# Grayscale ramp (range 232-255)
+
+echo Grayscale ramp:
+for ((color = 232; color < 256; ++color)) ; do
+	printf "\033[48;5;${color}m  "
+done
+printf "\033[0m\n\n"
+
+# Truecolor ramp
+
+for n in $(tput cols) $COLUMNS 80 ; do
+	ncols=$n
+	break
+done
+
+echo Truecolor ramp:
+for ((col = 0; col < ncols; ++col)) ; do
+	r=$(( 255 - ( 255 * col / ncols ) ))
+	g=$(( 510 * col / ncols )) ; if (( g > 255 )) ; then g=$(( 510 - g )) ; fi
+	b=$(( 255 * col / ncols ))
+	printf "\033[48;2;%d;%d;%dm" $r $g $b
+	printf "\033[38;2;%d;%d;%dm" $(( 255 - r )) $(( 255 - g )) $(( 255 - b ))
+	printf -- "-\033[0m"
+done
+echo
+
+# Interpretation
+
+ncols=$(printf "%-3d" $ncols)
+cat <<END
+
+If your terminal supports
+this many colors:                  8    16    256    24-bit
+
+Then you'll see about this many
+distinct shades of color above:
+
+System colors ..................   8    16   8-16        16
+Color cube (each square) .......   3    10     36        36
+Greyscale ramp (incl. black) ...   1     4     25        25
+Truecolor ramp .................   1     1      1       ${ncols}
+
+See /usr/share/doc/screen/README.Cygwin for information about terminal color
+support in Cygwin.
+END