lib/string/pad.rb in string-pad-0.0.1 vs lib/string/pad.rb in string-pad-0.0.2

@@ -3,11 +3,39 @@
 if RUBY_VERSION =~ /^1\.8/
   $KCODE = 'u'
 end
 
 class String
+  ZERO_WIDTH_CHARS = [
+    0x200b,
+    0x200c,
+    0x200d,
+    0x200e,
+    0x200f,
+    0x202a,
+    0x202b,
+    0x202c,
+    0x202d,
+    0x202e,
+    0x2060,
+    0x2061,
+    0x2062,
+    0x2063,
+    0x2064,
+    0x2066,
+    0x2067,
+    0x2068,
+    0x2069,
+    0x206a,
+    0x206b,
+    0x206c,
+    0x206d,
+    0x206e,
+    0x206f
+  ]
+
   def pad(size)
     orig_size = split(//).size
-    padding = (0...(size - orig_size)).to_a.map { [0x200b, 0x200c].sort_by { rand }.first }.pack('U*')
+    padding = (0...(size - orig_size)).to_a.map { ZERO_WIDTH_CHARS.sort_by { rand }.first }.pack('U*')
     padding + self
   end
 end