From 468baebd45e09f1b3a9ff344904b8839a9bc17c8 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Wed, 2 Jul 2014 17:45:58 +0900
Subject: [PATCH] Update ANSI code interpolation to cover more cases

---
 plugin/limelight.vim | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/plugin/limelight.vim b/plugin/limelight.vim
index 5ebe2ea..b531123 100644
--- a/plugin/limelight.vim
+++ b/plugin/limelight.vim
@@ -72,8 +72,16 @@ function! s:hex2rgb(str)
   return [eval('0x'.str[0:1]), eval('0x'.str[2:3]), eval('0x'.str[4:5])]
 endfunction
 
+let s:gray_converter = {
+\ 0:   231,
+\ 7:   254,
+\ 15:  256,
+\ 16:  231,
+\ 231: 256
+\ }
+
 function! s:gray_contiguous(col)
-  let val = (a:col == 15 || a:col == 231) ? 256 : (a:col == 0 ? 231 : a:col)
+  let val = get(s:gray_converter, a:col, a:col)
   if val < 231 || val > 256
     throw s:unsupported
   endif