lib/unicode_normalize.rb: revert r48046. The s in sIndex

is not hungarian notation. The variable name sIndex is
directly taken from the relevant part of the Unicode
Standard, where it is written SIndex and stands for
'syllable index'. See pp. 144/145 of
http://www.unicode.org/versions/Unicode7.0.0/ch03.pdf.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48052 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,12 @@
+Mon Oct 20 19:06:06 2014  Martin Duerst <duerst@it.aoyama.ac.jp>
+
+	* lib/unicode_normalize.rb: revert r48046. The s in sIndex
+	  is not hungarian notation. The variable name sIndex is
+	  directly taken from the relevant part of the Unicode
+	  Standard, where it is written SIndex and stands for
+	  'syllable index'. See pp. 144/145 of
+	  http://www.unicode.org/versions/Unicode7.0.0/ch03.pdf.
+
 Mon Oct 20 12:46:46 2014  Martin Duerst <duerst@it.aoyama.ac.jp>
 
 	* lib/unicode_normalize.rb: removing unnecessary 'self'.

lib/unicode_normalize/normalize.rb

@@ -43,11 +43,11 @@ module UnicodeNormalize
 
   ## Hangul Algorithm
   def self.hangul_decomp_one(target)
-    index = target.ord - SBASE
-    return target if index < 0 || index >= SCOUNT
-    l = LBASE + index / NCOUNT
-    v = VBASE + (index % NCOUNT) / TCOUNT
-    t = TBASE + index % TCOUNT
+    sIndex = target.ord - SBASE
+    return target if sIndex < 0 || sIndex >= SCOUNT
+    l = LBASE + sIndex / NCOUNT
+    v = VBASE + (sIndex % NCOUNT) / TCOUNT
+    t = TBASE + sIndex % TCOUNT
     (t==TBASE ? [l, v] : [l, v, t]).pack('U*') + target[1..-1]
   end