* benchmark/: add missing spaces around assignment operators (= and +=) for

  consistency.
  Approved by ko1.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37192 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

52 files changed, 56 insertions, 56 deletions

diff --git a/benchmark/bm_app_mandelbrot.rb b/benchmark/bm_app_mandelbrot.rb
index 89069db7ab..801b75e8e2 100644
--- a/benchmark/bm_app_mandelbrot.rb
+++ b/benchmark/bm_app_mandelbrot.rb
@@ -3,7 +3,7 @@ require 'complex'
 def mandelbrot? z
   i = 0
   while i<100
-    i+=1
+    i += 1
     z = z * z
     return false if z.abs > 2
   end
diff --git a/benchmark/bm_app_raise.rb b/benchmark/bm_app_raise.rb
index e7b5e3ae03..5db8f95d50 100644
--- a/benchmark/bm_app_raise.rb
+++ b/benchmark/bm_app_raise.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<300000
-  i+=1
+  i += 1
   begin
     raise
   rescue
diff --git a/benchmark/bm_app_strconcat.rb b/benchmark/bm_app_strconcat.rb
index d2203356de..7eed7c1aed 100644
--- a/benchmark/bm_app_strconcat.rb
+++ b/benchmark/bm_app_strconcat.rb
@@ -1,5 +1,5 @@
 i = 0
 while i<2_000_000
   "#{1+1} #{1+1} #{1+1}"
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_loop_whileloop.rb b/benchmark/bm_loop_whileloop.rb
index 9510957b09..0072822c06 100644
--- a/benchmark/bm_loop_whileloop.rb
+++ b/benchmark/bm_loop_whileloop.rb
@@ -1,4 +1,4 @@
 i = 0
 while i<30_000_000 # benchmark loop 1
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_loop_whileloop2.rb b/benchmark/bm_loop_whileloop2.rb
index e5723272b6..47d02dffc4 100644
--- a/benchmark/bm_loop_whileloop2.rb
+++ b/benchmark/bm_loop_whileloop2.rb
@@ -1,4 +1,4 @@
 i = 0
 while i< 6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_so_concatenate.rb b/benchmark/bm_so_concatenate.rb
index db19990d15..873214de7c 100644
--- a/benchmark/bm_so_concatenate.rb
+++ b/benchmark/bm_so_concatenate.rb
@@ -7,7 +7,7 @@
 STUFF = "hello\n"
 i = 0
 while i<10
-  i+=1
+  i += 1
   hello = ''
   4_000_000.times do |e|
     hello << STUFF
diff --git a/benchmark/bm_so_exception.rb b/benchmark/bm_so_exception.rb
index d8b461290c..deb003a594 100644
--- a/benchmark/bm_so_exception.rb
+++ b/benchmark/bm_so_exception.rb
@@ -56,6 +56,6 @@ end
 i = 1
 max = NUM+1
 while i < max
-  i+=1
+  i += 1
   some_function(i+1)
 end
diff --git a/benchmark/bm_so_lists.rb b/benchmark/bm_so_lists.rb
index f8d26797aa..e8f4a2a5f7 100644
--- a/benchmark/bm_so_lists.rb
+++ b/benchmark/bm_so_lists.rb
@@ -40,7 +40,7 @@ end
 
 i = 0
 while i<NUM
-  i+=1
+  i += 1
   result = test_lists()
 end
 
diff --git a/benchmark/bm_so_random.rb b/benchmark/bm_so_random.rb
index 509328afe4..a66b9e8e63 100644
--- a/benchmark/bm_so_random.rb
+++ b/benchmark/bm_so_random.rb
@@ -14,7 +14,7 @@ N = 3_000_000
 
 i = 0
 while i<N
-  i+=1
+  i +=1
   gen_random(100.0)
 end
 # "%.9f" % gen_random(100.0)
diff --git a/benchmark/bm_so_sieve.rb b/benchmark/bm_so_sieve.rb
index 3f1b138bd1..43dc302648 100644
--- a/benchmark/bm_so_sieve.rb
+++ b/benchmark/bm_so_sieve.rb
@@ -4,12 +4,12 @@ count = i = j = 0
 flags0 = Array.new(8192,1)
 k = 0
 while k < num
-  k+=1
+  k += 1
   count = 0
   flags = flags0.dup
   i = 2
   while i<8192
-    i+=1
+    i += 1
     if flags[i]
       # remove all multiples of prime: i
       j = i*i
diff --git a/benchmark/bm_vm1_attr_ivar.rb b/benchmark/bm_vm1_attr_ivar.rb
index 6c39e20564..16906f3605 100644
--- a/benchmark/bm_vm1_attr_ivar.rb
+++ b/benchmark/bm_vm1_attr_ivar.rb
@@ -8,7 +8,7 @@ end
 obj = C.new
 i = 0
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   j = obj.a
   k = obj.b
 end
diff --git a/benchmark/bm_vm1_attr_ivar_set.rb b/benchmark/bm_vm1_attr_ivar_set.rb
index 410b62c6a4..7e7a6b48c0 100644
--- a/benchmark/bm_vm1_attr_ivar_set.rb
+++ b/benchmark/bm_vm1_attr_ivar_set.rb
@@ -8,7 +8,7 @@ end
 obj = C.new
 i = 0
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   obj.a = 1
   obj.b = 2
 end
diff --git a/benchmark/bm_vm1_block.rb b/benchmark/bm_vm1_block.rb
index 0ea806ae35..a9f56b15ea 100644
--- a/benchmark/bm_vm1_block.rb
+++ b/benchmark/bm_vm1_block.rb
@@ -4,7 +4,7 @@ end
 
 i = 0
 while i<30_000_000 # while loop 1
-  i+=1
+  i += 1
   m{
   }
 end
diff --git a/benchmark/bm_vm1_const.rb b/benchmark/bm_vm1_const.rb
index 066916dc31..ac59ebccf1 100644
--- a/benchmark/bm_vm1_const.rb
+++ b/benchmark/bm_vm1_const.rb
@@ -2,7 +2,7 @@ Const = 1
 
 i = 0
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   j = Const
   k = Const
 end
diff --git a/benchmark/bm_vm1_ensure.rb b/benchmark/bm_vm1_ensure.rb
index 87a9cf6981..a1596145f2 100644
--- a/benchmark/bm_vm1_ensure.rb
+++ b/benchmark/bm_vm1_ensure.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<30_000_000 # benchmark loop 1
-  i+=1
+  i += 1
   begin
     begin
     ensure
diff --git a/benchmark/bm_vm1_float_simple.rb b/benchmark/bm_vm1_float_simple.rb
index 46e3f2aaed..d4581439ff 100644
--- a/benchmark/bm_vm1_float_simple.rb
+++ b/benchmark/bm_vm1_float_simple.rb
@@ -1,6 +1,6 @@
-i= 0.0; f = 0.0
+i = 0.0; f = 0.0
 while i<30_000_000
-  i+= 1
+  i += 1
   f += 0.1; f -= 0.1
   f += 0.1; f -= 0.1
   f += 0.1; f -= 0.1
diff --git a/benchmark/bm_vm1_ivar.rb b/benchmark/bm_vm1_ivar.rb
index 3ba56427f4..68a73cf92f 100644
--- a/benchmark/bm_vm1_ivar.rb
+++ b/benchmark/bm_vm1_ivar.rb
@@ -2,7 +2,7 @@
 
 i = 0
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   j = @a
   k = @a
 end
diff --git a/benchmark/bm_vm1_ivar_set.rb b/benchmark/bm_vm1_ivar_set.rb
index c8076c6ab6..bd81b06c34 100644
--- a/benchmark/bm_vm1_ivar_set.rb
+++ b/benchmark/bm_vm1_ivar_set.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   @a = 1
   @b = 2
 end
diff --git a/benchmark/bm_vm1_length.rb b/benchmark/bm_vm1_length.rb
index 2245916499..353de3ab0e 100644
--- a/benchmark/bm_vm1_length.rb
+++ b/benchmark/bm_vm1_length.rb
@@ -2,7 +2,7 @@ a = 'abc'
 b = [1, 2, 3]
 i = 0
 while i<30_000_000 # while loop 1
-  i+=1
+  i += 1
   a.length
   b.length
 end
diff --git a/benchmark/bm_vm1_lvar_init.rb b/benchmark/bm_vm1_lvar_init.rb
index 3bdd601b88..36f2068811 100644
--- a/benchmark/bm_vm1_lvar_init.rb
+++ b/benchmark/bm_vm1_lvar_init.rb
@@ -12,7 +12,7 @@ end
 i = 0
 
 while i<30_000_000 # while loop 1
-  i+=1
+  i += 1
   m i
 end
 
diff --git a/benchmark/bm_vm1_lvar_set.rb b/benchmark/bm_vm1_lvar_set.rb
index 53e0ee126c..222e864134 100644
--- a/benchmark/bm_vm1_lvar_set.rb
+++ b/benchmark/bm_vm1_lvar_set.rb
@@ -1,5 +1,5 @@
 i = 0
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   a = b = c = d = e = f = g = h = j = k = l = m = n = o = p = q = r = 1
 end
diff --git a/benchmark/bm_vm1_neq.rb b/benchmark/bm_vm1_neq.rb
index 9254a0ca9b..bbb4ae07a4 100644
--- a/benchmark/bm_vm1_neq.rb
+++ b/benchmark/bm_vm1_neq.rb
@@ -3,6 +3,6 @@ obj1 = Object.new
 obj2 = Object.new
 
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   obj1 != obj2
 end
diff --git a/benchmark/bm_vm1_not.rb b/benchmark/bm_vm1_not.rb
index ee9d0f3605..b09ecdcc21 100644
--- a/benchmark/bm_vm1_not.rb
+++ b/benchmark/bm_vm1_not.rb
@@ -2,6 +2,6 @@ i = 0
 obj = Object.new
 
 while i<30_000_000 # while loop 1
-  i+= 1
+  i += 1
   !obj
 end
diff --git a/benchmark/bm_vm1_rescue.rb b/benchmark/bm_vm1_rescue.rb
index eb0ed1f122..b0d3e2bdfa 100644
--- a/benchmark/bm_vm1_rescue.rb
+++ b/benchmark/bm_vm1_rescue.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<30_000_000 # while loop 1
-  i+=1
+  i += 1
   begin
   rescue
   end
diff --git a/benchmark/bm_vm1_simplereturn.rb b/benchmark/bm_vm1_simplereturn.rb
index bf22c5d5e4..63f9f21675 100644
--- a/benchmark/bm_vm1_simplereturn.rb
+++ b/benchmark/bm_vm1_simplereturn.rb
@@ -3,7 +3,7 @@ def m
 end
 i = 0
 while i<30_000_000 # while loop 1
-  i+=1
+  i += 1
   m
 end
 
diff --git a/benchmark/bm_vm1_swap.rb b/benchmark/bm_vm1_swap.rb
index cdbcb6a2ba..918f8b2112 100644
--- a/benchmark/bm_vm1_swap.rb
+++ b/benchmark/bm_vm1_swap.rb
@@ -2,7 +2,7 @@ a = 1
 b = 2
 i = 0
 while i<30_000_000 # while loop 1
-  i+=1
+  i += 1
   a, b = b, a
 end
 
diff --git a/benchmark/bm_vm2_array.rb b/benchmark/bm_vm2_array.rb
index b5530d46eb..df9037c83c 100644
--- a/benchmark/bm_vm2_array.rb
+++ b/benchmark/bm_vm2_array.rb
@@ -1,5 +1,5 @@
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   a = [1,2,3,4,5,6,7,8,9,10]
 end
diff --git a/benchmark/bm_vm2_bigarray.rb b/benchmark/bm_vm2_bigarray.rb
index 79d4b99067..b02509d6a2 100644
--- a/benchmark/bm_vm2_bigarray.rb
+++ b/benchmark/bm_vm2_bigarray.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   a = [
     1,2,3,4,5,6,7,8,9,10,
     1,2,3,4,5,6,7,8,9,10,
diff --git a/benchmark/bm_vm2_bighash.rb b/benchmark/bm_vm2_bighash.rb
index dc84ee5ac9..5e3f437bb8 100644
--- a/benchmark/bm_vm2_bighash.rb
+++ b/benchmark/bm_vm2_bighash.rb
@@ -1,5 +1,5 @@
 i = 0
 while i<60_000 # benchmark loop 2
-  i+=1
+  i += 1
   a = {0=>0, 1=>1, 2=>2, 3=>3, 4=>4, 5=>5, 6=>6, 7=>7, 8=>8, 9=>9, 10=>10, 11=>11, 12=>12, 13=>13, 14=>14, 15=>15, 16=>16, 17=>17, 18=>18, 19=>19, 20=>20, 21=>21, 22=>22, 23=>23, 24=>24, 25=>25, 26=>26, 27=>27, 28=>28, 29=>29, 30=>30, 31=>31, 32=>32, 33=>33, 34=>34, 35=>35, 36=>36, 37=>37, 38=>38, 39=>39, 40=>40, 41=>41, 42=>42, 43=>43, 44=>44, 45=>45, 46=>46, 47=>47, 48=>48, 49=>49, 50=>50, 51=>51, 52=>52, 53=>53, 54=>54, 55=>55, 56=>56, 57=>57, 58=>58, 59=>59, 60=>60, 61=>61, 62=>62, 63=>63, 64=>64, 65=>65, 66=>66, 67=>67, 68=>68, 69=>69, 70=>70, 71=>71, 72=>72, 73=>73, 74=>74, 75=>75, 76=>76, 77=>77, 78=>78, 79=>79, 80=>80, 81=>81, 82=>82, 83=>83, 84=>84, 85=>85, 86=>86, 87=>87, 88=>88, 89=>89, 90=>90, 91=>91, 92=>92, 93=>93, 94=>94, 95=>95, 96=>96, 97=>97, 98=>98, 99=>99, 100=>100, 101=>101, 102=>102, 103=>103, 104=>104, 105=>105, 106=>106, 107=>107, 108=>108, 109=>109, 110=>110, 111=>111, 112=>112, 113=>113, 114=>114, 115=>115, 116=>116, 117=>117, 118=>118, 119=>119, 120=>120, 121=>121, 122=>122, 123=>123, 124=>124, 125=>125, 126=>126, 127=>127, 128=>128, 129=>129, 130=>130, 131=>131, 132=>132, 133=>133, 134=>134, 135=>135, 136=>136, 137=>137, 138=>138, 139=>139, 140=>140, 141=>141, 142=>142, 143=>143, 144=>144, 145=>145, 146=>146, 147=>147, 148=>148, 149=>149, 150=>150, 151=>151, 152=>152, 153=>153, 154=>154, 155=>155, 156=>156, 157=>157, 158=>158, 159=>159, 160=>160, 161=>161, 162=>162, 163=>163, 164=>164, 165=>165, 166=>166, 167=>167, 168=>168, 169=>169, 170=>170, 171=>171, 172=>172, 173=>173, 174=>174, 175=>175, 176=>176, 177=>177, 178=>178, 179=>179, 180=>180, 181=>181, 182=>182, 183=>183, 184=>184, 185=>185, 186=>186, 187=>187, 188=>188, 189=>189, 190=>190, 191=>191, 192=>192, 193=>193, 194=>194, 195=>195, 196=>196, 197=>197, 198=>198, 199=>199, 200=>200, 201=>201, 202=>202, 203=>203, 204=>204, 205=>205, 206=>206, 207=>207, 208=>208, 209=>209, 210=>210, 211=>211, 212=>212, 213=>213, 214=>214, 215=>215, 216=>216, 217=>217, 218=>218, 219=>219, 220=>220, 221=>221, 222=>222, 223=>223, 224=>224, 225=>225, 226=>226, 227=>227, 228=>228, 229=>229, 230=>230, 231=>231, 232=>232, 233=>233, 234=>234, 235=>235, 236=>236, 237=>237, 238=>238, 239=>239, 240=>240, 241=>241, 242=>242, 243=>243, 244=>244, 245=>245, 246=>246, 247=>247, 248=>248, 249=>249, 250=>250, 251=>251, 252=>252, 253=>253, 254=>254, 255=>255, 256=>256, 257=>257, 258=>258, 259=>259, 260=>260, 261=>261, 262=>262, 263=>263, 264=>264, 265=>265, 266=>266, 267=>267, 268=>268, 269=>269, 270=>270, 271=>271, 272=>272, 273=>273, 274=>274, 275=>275, 276=>276, 277=>277, 278=>278, 279=>279, 280=>280, 281=>281, 282=>282, 283=>283, 284=>284, 285=>285, 286=>286, 287=>287, 288=>288, 289=>289, 290=>290, 291=>291, 292=>292, 293=>293, 294=>294, 295=>295, 296=>296, 297=>297, 298=>298, 299=>299, 300=>300, 301=>301, 302=>302, 303=>303, 304=>304, 305=>305, 306=>306, 307=>307, 308=>308, 309=>309, 310=>310, 311=>311, 312=>312, 313=>313, 314=>314, 315=>315, 316=>316, 317=>317, 318=>318, 319=>319, 320=>320, 321=>321, 322=>322, 323=>323, 324=>324, 325=>325, 326=>326, 327=>327, 328=>328, 329=>329, 330=>330, 331=>331, 332=>332, 333=>333, 334=>334, 335=>335, 336=>336, 337=>337, 338=>338, 339=>339, 340=>340, 341=>341, 342=>342, 343=>343, 344=>344, 345=>345, 346=>346, 347=>347, 348=>348, 349=>349, 350=>350, 351=>351, 352=>352, 353=>353, 354=>354, 355=>355, 356=>356, 357=>357, 358=>358, 359=>359, 360=>360, 361=>361, 362=>362, 363=>363, 364=>364, 365=>365, 366=>366, 367=>367, 368=>368, 369=>369, 370=>370, 371=>371, 372=>372, 373=>373, 374=>374, 375=>375, 376=>376, 377=>377, 378=>378, 379=>379, 380=>380, 381=>381, 382=>382, 383=>383, 384=>384, 385=>385, 386=>386, 387=>387, 388=>388, 389=>389, 390=>390, 391=>391, 392=>392, 393=>393, 394=>394, 395=>395, 396=>396, 397=>397, 398=>398, 399=>399, 400=>400, 401=>401, 402=>402, 403=>403, 404=>404, 405=>405, 406=>406, 407=>407, 408=>408, 409=>409, 410=>410, 411=>411, 412=>412, 413=>413, 414=>414, 415=>415, 416=>416, 417=>417, 418=>418, 419=>419, 420=>420, 421=>421, 422=>422, 423=>423, 424=>424, 425=>425, 426=>426, 427=>427, 428=>428, 429=>429, 430=>430, 431=>431, 432=>432, 433=>433, 434=>434, 435=>435, 436=>436, 437=>437, 438=>438, 439=>439, 440=>440, 441=>441, 442=>442, 443=>443, 444=>444, 445=>445, 446=>446, 447=>447, 448=>448, 449=>449, 450=>450, 451=>451, 452=>452, 453=>453, 454=>454, 455=>455, 456=>456, 457=>457, 458=>458, 459=>459, 460=>460, 461=>461, 462=>462, 463=>463, 464=>464, 465=>465, 466=>466, 467=>467, 468=>468, 469=>469, 470=>470, 471=>471, 472=>472, 473=>473, 474=>474, 475=>475, 476=>476, 477=>477, 478=>478, 479=>479, 480=>480, 481=>481, 482=>482, 483=>483, 484=>484, 485=>485, 486=>486, 487=>487, 488=>488, 489=>489, 490=>490, 491=>491, 492=>492, 493=>493, 494=>494, 495=>495, 496=>496, 497=>497, 498=>498, 499=>499, 500=>500,}
 end
diff --git a/benchmark/bm_vm2_case.rb b/benchmark/bm_vm2_case.rb
index 506da02737..adc6e4df0a 100644
--- a/benchmark/bm_vm2_case.rb
+++ b/benchmark/bm_vm2_case.rb
@@ -8,7 +8,7 @@ while i<6_000_000 # while loop 2
   when :boo
     raise
   when :foo
-    i+=1
+    i += 1
   end
 end
 
diff --git a/benchmark/bm_vm2_defined_method.rb b/benchmark/bm_vm2_defined_method.rb
index bdbafdc586..053ed6c912 100644
--- a/benchmark/bm_vm2_defined_method.rb
+++ b/benchmark/bm_vm2_defined_method.rb
@@ -4,6 +4,6 @@ end
 
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   m; m; m; m; m; m; m; m;
 end
diff --git a/benchmark/bm_vm2_eval.rb b/benchmark/bm_vm2_eval.rb
index 1677c2f98a..307cfc28ef 100644
--- a/benchmark/bm_vm2_eval.rb
+++ b/benchmark/bm_vm2_eval.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   eval("1")
 end
 
diff --git a/benchmark/bm_vm2_method.rb b/benchmark/bm_vm2_method.rb
index b7580eb306..a8ccff7138 100644
--- a/benchmark/bm_vm2_method.rb
+++ b/benchmark/bm_vm2_method.rb
@@ -4,6 +4,6 @@ end
 
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   m; m; m; m; m; m; m; m;
 end
diff --git a/benchmark/bm_vm2_mutex.rb b/benchmark/bm_vm2_mutex.rb
index f342d0a56e..7362f738c5 100644
--- a/benchmark/bm_vm2_mutex.rb
+++ b/benchmark/bm_vm2_mutex.rb
@@ -4,6 +4,6 @@ m = Mutex.new
 
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   m.synchronize{}
 end
diff --git a/benchmark/bm_vm2_poly_method.rb b/benchmark/bm_vm2_poly_method.rb
index eaba75d7e3..c82c0e4bce 100644
--- a/benchmark/bm_vm2_poly_method.rb
+++ b/benchmark/bm_vm2_poly_method.rb
@@ -16,5 +16,5 @@ i = 0
 while i<6_000_000 # benchmark loop 2
   o = (i % 2 == 0) ? o1 : o2
   o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_vm2_poly_method_ov.rb b/benchmark/bm_vm2_poly_method_ov.rb
index 075fb8f52c..aa5fd1dd38 100644
--- a/benchmark/bm_vm2_poly_method_ov.rb
+++ b/benchmark/bm_vm2_poly_method_ov.rb
@@ -16,5 +16,5 @@ i = 0
 while i<6_000_000 # benchmark loop 2
   o = (i % 2 == 0) ? o1 : o2
 #  o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_vm2_proc.rb b/benchmark/bm_vm2_proc.rb
index 5d2f0a49df..65e5217371 100644
--- a/benchmark/bm_vm2_proc.rb
+++ b/benchmark/bm_vm2_proc.rb
@@ -8,7 +8,7 @@ pr = m{
 
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   pr.call
 end
 
diff --git a/benchmark/bm_vm2_raise1.rb b/benchmark/bm_vm2_raise1.rb
index 5ec67bcd32..aa5387987f 100644
--- a/benchmark/bm_vm2_raise1.rb
+++ b/benchmark/bm_vm2_raise1.rb
@@ -8,7 +8,7 @@ end
 
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
 
   begin
     rec 1
diff --git a/benchmark/bm_vm2_raise2.rb b/benchmark/bm_vm2_raise2.rb
index 947f0f433a..1f61c63157 100644
--- a/benchmark/bm_vm2_raise2.rb
+++ b/benchmark/bm_vm2_raise2.rb
@@ -8,7 +8,7 @@ end
 
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
 
   begin
     rec 10
diff --git a/benchmark/bm_vm2_regexp.rb b/benchmark/bm_vm2_regexp.rb
index 07e12dc477..55f9e957a3 100644
--- a/benchmark/bm_vm2_regexp.rb
+++ b/benchmark/bm_vm2_regexp.rb
@@ -2,5 +2,5 @@ i = 0
 str = 'xxxhogexxx'
 while i<6_000_000 # benchmark loop 2
   /hoge/ =~ str
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_vm2_send.rb b/benchmark/bm_vm2_send.rb
index f940e7ac19..6a3ab6fdab 100644
--- a/benchmark/bm_vm2_send.rb
+++ b/benchmark/bm_vm2_send.rb
@@ -7,6 +7,6 @@ o = C.new
 
 i = 0
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   o.__send__ :m
 end
diff --git a/benchmark/bm_vm2_super.rb b/benchmark/bm_vm2_super.rb
index d4f0b647de..afd8579e7b 100644
--- a/benchmark/bm_vm2_super.rb
+++ b/benchmark/bm_vm2_super.rb
@@ -16,5 +16,5 @@ obj = CC.new
 i = 0
 while i<6_000_000 # benchmark loop 2
   obj.m
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_vm2_unif1.rb b/benchmark/bm_vm2_unif1.rb
index 775f4d37e6..1774625942 100644
--- a/benchmark/bm_vm2_unif1.rb
+++ b/benchmark/bm_vm2_unif1.rb
@@ -3,6 +3,6 @@ def m a, b
 end
 
 while i<6_000_000 # benchmark loop 2
-  i+=1
+  i += 1
   m 100, 200
 end
diff --git a/benchmark/bm_vm2_zsuper.rb b/benchmark/bm_vm2_zsuper.rb
index 7e90df1822..2a43e62217 100644
--- a/benchmark/bm_vm2_zsuper.rb
+++ b/benchmark/bm_vm2_zsuper.rb
@@ -16,5 +16,5 @@ obj = CC.new
 
 while i<6_000_000 # benchmark loop 2
   obj.m 10
-  i+=1
+  i += 1
 end
diff --git a/benchmark/bm_vm3_clearmethodcache.rb b/benchmark/bm_vm3_clearmethodcache.rb
index e639008e9b..9661323cd2 100644
--- a/benchmark/bm_vm3_clearmethodcache.rb
+++ b/benchmark/bm_vm3_clearmethodcache.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<200_000
-  i+=1
+  i += 1
 
   Class.new{
     def m; end
diff --git a/benchmark/bm_vm_thread_create_join.rb b/benchmark/bm_vm_thread_create_join.rb
index 7d3a481a44..393cd45df9 100644
--- a/benchmark/bm_vm_thread_create_join.rb
+++ b/benchmark/bm_vm_thread_create_join.rb
@@ -1,6 +1,6 @@
 i = 0
 while i<100_000 # benchmark loop 3
-  i+=1
+  i += 1
   Thread.new{
   }.join
 end
diff --git a/benchmark/bm_vm_thread_mutex1.rb b/benchmark/bm_vm_thread_mutex1.rb
index 9ccc7c7287..5c9f85dfb7 100644
--- a/benchmark/bm_vm_thread_mutex1.rb
+++ b/benchmark/bm_vm_thread_mutex1.rb
@@ -9,7 +9,7 @@ lmax = max * max
   Thread.new{
     i = 0
     while i<lmax
-      i+=1
+      i += 1
       m.synchronize{
         r += 1
       }
diff --git a/benchmark/bm_vm_thread_mutex2.rb b/benchmark/bm_vm_thread_mutex2.rb
index 703a044c10..10de59054f 100644
--- a/benchmark/bm_vm_thread_mutex2.rb
+++ b/benchmark/bm_vm_thread_mutex2.rb
@@ -9,7 +9,7 @@ lmax = (max * max)/2
   Thread.new{
     i = 0
     while i<lmax
-      i+=1
+      i += 1
       m.synchronize{
         r += 1
       }
diff --git a/benchmark/bm_vm_thread_mutex3.rb b/benchmark/bm_vm_thread_mutex3.rb
index 59b38dc30e..7f9a44b39d 100644
--- a/benchmark/bm_vm_thread_mutex3.rb
+++ b/benchmark/bm_vm_thread_mutex3.rb
@@ -8,7 +8,7 @@ max = 2000
   Thread.new{
     i = 0
     while i<max
-      i+=1
+      i += 1
       m.synchronize{
         r += 1
       }
diff --git a/benchmark/bmx_temp.rb b/benchmark/bmx_temp.rb
index ef762de204..dd43426688 100644
--- a/benchmark/bmx_temp.rb
+++ b/benchmark/bmx_temp.rb
@@ -1,5 +1,5 @@
 i = 0
 while i<800000 # benchmark loop 2
-  i+=1
+  i += 1
   a = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9
 end
diff --git a/benchmark/other-lang/fact.rb b/benchmark/other-lang/fact.rb
index 7e97b22b39..6cedc752cd 100644
--- a/benchmark/other-lang/fact.rb
+++ b/benchmark/other-lang/fact.rb
@@ -6,8 +6,8 @@ def fact(n)
   end
 end
 
-i=0
+i = 0
 while i<10000
-  i+=1
+  i += 1
   fact(100)
 end
diff --git a/benchmark/other-lang/loop.rb b/benchmark/other-lang/loop.rb
index d43cef61f3..b367b9dbf3 100644
--- a/benchmark/other-lang/loop.rb
+++ b/benchmark/other-lang/loop.rb
@@ -1,4 +1,4 @@
-i=0
+i = 0
 while i<30000000
-  i+=1
+  i += 1
 end