replace greyscale ramp table with calculation

Author: ap

autoload/css_color.vim

@@ -67,32 +67,7 @@ else
 		\ [ 0x00, 0xFF, 0xFF, 14 ],
 		\ [ 0xFF, 0xFF, 0xFF, 15 ]]
 	" grayscale ramp
-	" (value is 8+10*lum for lum in 0..23)
-	let s:xtermcolor += [
-		\ [ 0x08, 0x08, 0x08, 232 ],
-		\ [ 0x12, 0x12, 0x12, 233 ],
-		\ [ 0x1C, 0x1C, 0x1C, 234 ],
-		\ [ 0x26, 0x26, 0x26, 235 ],
-		\ [ 0x30, 0x30, 0x30, 236 ],
-		\ [ 0x3A, 0x3A, 0x3A, 237 ],
-		\ [ 0x44, 0x44, 0x44, 238 ],
-		\ [ 0x4E, 0x4E, 0x4E, 239 ],
-		\ [ 0x58, 0x58, 0x58, 240 ],
-		\ [ 0x62, 0x62, 0x62, 241 ],
-		\ [ 0x6C, 0x6C, 0x6C, 242 ],
-		\ [ 0x76, 0x76, 0x76, 243 ],
-		\ [ 0x80, 0x80, 0x80, 244 ],
-		\ [ 0x8A, 0x8A, 0x8A, 245 ],
-		\ [ 0x94, 0x94, 0x94, 246 ],
-		\ [ 0x9E, 0x9E, 0x9E, 247 ],
-		\ [ 0xA8, 0xA8, 0xA8, 248 ],
-		\ [ 0xB2, 0xB2, 0xB2, 249 ],
-		\ [ 0xBC, 0xBC, 0xBC, 250 ],
-		\ [ 0xC6, 0xC6, 0xC6, 251 ],
-		\ [ 0xD0, 0xD0, 0xD0, 252 ],
-		\ [ 0xDA, 0xDA, 0xDA, 253 ],
-		\ [ 0xE4, 0xE4, 0xE4, 254 ],
-		\ [ 0xEE, 0xEE, 0xEE, 255 ]]
+	let s:xtermcolor += map(range(24),'repeat([10*v:val+8],3) + [v:val+232]')
 
 	" the 6 values used in the xterm color cube
 	"                    0    95   135   175   215   255