Fix indents; Indent is two spaces; Delete tabs [skip ci]

3 files changed, 267 insertions, 269 deletions

diff --git a/doc/api/mruby/array.h.md b/doc/api/mruby/array.h.md
index e1fb0003d..36c253cec 100644
--- a/doc/api/mruby/array.h.md
+++ b/doc/api/mruby/array.h.md
@@ -12,28 +12,27 @@ In this example we read from a Ruby file inside C. The Ruby code will print what
 #include "mruby/array.h" // Needs the array header.

 #include "mruby/compile.h"

 

-

 int main(int argc, char *argv[])

-{	

-	  mrb_value new_ary; // Declare variable.

-	  mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-    FILE *fp = fopen("test.rb","r");

-	  new_ary = mrb_ary_new(mrb);

-    mrb_value obj = mrb_load_file(mrb,fp);

-    mrb_funcall(mrb, obj, "method_name", 1, new_ary);

-    fclose(fp);

-    mrb_close(mrb);

-	return 0;

+{

+  mrb_value new_ary; // Declare variable.

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  FILE *fp = fopen("test.rb","r");

+  new_ary = mrb_ary_new(mrb);

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_funcall(mrb, obj, "method_name", 1, new_ary);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 test.rb

 ```Ruby

 class Example_Class

-	def method_name(a)

-		puts a

-		puts a.class

-	end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

 end

 Example_Class.new

 ```

@@ -52,32 +51,32 @@ In this example we read from a Ruby file inside C. The Ruby code will print what
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{	

-	  mrb_value new_ary; // Declare variable.

-	  mrb_int random_value1 = 70; // Initialize variable

-	  mrb_int random_value2 = 60; // Initialize variable

-	  mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-    FILE *fp = fopen("test.rb","r");

-	  new_ary = mrb_ary_new(mrb); // Initialize ruby array.

-	  /* Pushes the fixnum value from random_value1 to the new_ary instance. */

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1)); 

-	  /* Pushes the fixnum value from random_value2 to the new_ary instance. */

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

-    mrb_value obj = mrb_load_file(mrb,fp);

-    mrb_funcall(mrb, obj, "method_name", 1, new_ary);

-    fclose(fp);

-    mrb_close(mrb);

-	  return 0;

+{

+  mrb_value new_ary; // Declare variable.

+  mrb_int random_value1 = 70; // Initialize variable

+  mrb_int random_value2 = 60; // Initialize variable

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  FILE *fp = fopen("test.rb","r");

+  new_ary = mrb_ary_new(mrb); // Initialize ruby array.

+  /* Pushes the fixnum value from random_value1 to the new_ary instance. */

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1)); 

+  /* Pushes the fixnum value from random_value2 to the new_ary instance. */

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_funcall(mrb, obj, "method_name", 1, new_ary);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 test.rb

 ```Ruby

 class Example_Class

-	def method_name(a)

-		puts a

-		puts a.class

-	end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

 end

 Example_Class.new

 ```

@@ -103,37 +102,37 @@ called pop_ary that will return the array alone(just to be clean) and you should
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{	

-	  mrb_value new_ary; // Declare variable.

-	  mrb_int random_value1 = 70; // Initialize variable

-	  mrb_int random_value2 = 60; // Initialize variable

-	  mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-    FILE *fp = fopen("test.rb","r");

-	  new_ary = mrb_ary_new(mrb); // Initialize ruby array.

-	  /* Pushes the fixnum value from random_value1 to the new_ary instance. */

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1)); 

-	  /* Pushes the fixnum value from random_value2 to the new_ary instance. */

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

-    mrb_value obj = mrb_load_file(mrb,fp);

-    mrb_funcall(mrb, obj, "method_name", 1, new_ary);

-    mrb_ary_pop(mrb, new_ary); // Pops the last element of the array. In this case 60.

-    mrb_funcall(mrb, obj, "pop_ary", 1, new_ary); // Calls the method again to show the results.

-    fclose(fp);

-    mrb_close(mrb);

-	  return 0;

+{

+  mrb_value new_ary; // Declare variable.

+  mrb_int random_value1 = 70; // Initialize variable

+  mrb_int random_value2 = 60; // Initialize variable

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  FILE *fp = fopen("test.rb","r");

+  new_ary = mrb_ary_new(mrb); // Initialize ruby array.

+  /* Pushes the fixnum value from random_value1 to the new_ary instance. */

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1)); 

+  /* Pushes the fixnum value from random_value2 to the new_ary instance. */

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_funcall(mrb, obj, "method_name", 1, new_ary);

+  mrb_ary_pop(mrb, new_ary); // Pops the last element of the array. In this case 60.

+  mrb_funcall(mrb, obj, "pop_ary", 1, new_ary); // Calls the method again to show the results.

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 test.rb

 ```Ruby

 class Example_Class

-	def method_name(a)

-		puts a

-		puts a.class

-	end

-	def pop_ary(a)

-		puts a

-	end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

+  def pop_ary(a)

+    puts a

+  end

 end

 Example_Class.new

 ```

@@ -158,35 +157,35 @@ In this example we read from a Ruby file inside C. The Ruby code will print what
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{	

-    mrb_value ary_ref; // Declare variable.

-	  mrb_value new_ary; // Declare variable.

-	  mrb_int random_value1 = 70; // Initialize variable

-	  mrb_int random_value2 = 60; // Initialize variable

-	  mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-    FILE *fp = fopen("test.rb","r");

-	  new_ary = mrb_ary_new(mrb); // Initialize ruby array.

-	  /* Pushes the fixnum value from random_value1 to the new_ary instance. */

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1)); 

-	  /* Pushes the fixnum value from random_value2 to the new_ary instance. */

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

-	  ary_ref = mrb_ary_ref(mrb, new_ary, 1); // Gets the value of new_ary's second element at index 1. 

-    mrb_value obj = mrb_load_file(mrb,fp);

-    /* Passing the value from ary_ref to the method method_name.*/

-    mrb_funcall(mrb, obj, "method_name", 1, ary_ref);

-    fclose(fp);

-    mrb_close(mrb);

-	  return 0;

+{

+  mrb_value ary_ref; // Declare variable.

+  mrb_value new_ary; // Declare variable.

+  mrb_int random_value1 = 70; // Initialize variable

+  mrb_int random_value2 = 60; // Initialize variable

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  FILE *fp = fopen("test.rb","r");

+  new_ary = mrb_ary_new(mrb); // Initialize ruby array.

+  /* Pushes the fixnum value from random_value1 to the new_ary instance. */

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1)); 

+  /* Pushes the fixnum value from random_value2 to the new_ary instance. */

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

+  ary_ref = mrb_ary_ref(mrb, new_ary, 1); // Gets the value of new_ary's second element at index 1. 

+  mrb_value obj = mrb_load_file(mrb,fp);

+  /* Passing the value from ary_ref to the method method_name.*/

+  mrb_funcall(mrb, obj, "method_name", 1, ary_ref);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 test.rb

 ```Ruby

 class Example_Class

-	def method_name(a)

-		puts a

-		puts a.class

-	end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

 end

 Example_Class.new

 ```

@@ -211,36 +210,36 @@ In this example we read from a Ruby file inside C. The Ruby code will print what
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{	

-	  mrb_value new_ary;

-	  mrb_value ary_obj;

-	  mrb_int random_value1 = 70;

-	  mrb_int random_value2 = 60;

-	  mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-    FILE *fp = fopen("test.rb","r");

-	  new_ary = mrb_ary_new(mrb);

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1));

-	  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

-	  /* Sets the fixnum value of 7 to the second index of the array.*/

-	  mrb_ary_set(mrb, new_ary, 2, mrb_fixnum_value(7));

-    mrb_value obj = mrb_load_file(mrb,fp);

-    mrb_funcall(mrb, obj, "before_after", 1, new_ary);

-    fclose(fp);

-    mrb_close(mrb);

-	  return 0;

+{

+  mrb_value new_ary;

+  mrb_value ary_obj;

+  mrb_int random_value1 = 70;

+  mrb_int random_value2 = 60;

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  FILE *fp = fopen("test.rb","r");

+  new_ary = mrb_ary_new(mrb);

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value1));

+  mrb_ary_push(mrb, new_ary, mrb_fixnum_value(random_value2));

+  /* Sets the fixnum value of 7 to the second index of the array.*/

+  mrb_ary_set(mrb, new_ary, 2, mrb_fixnum_value(7));

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_funcall(mrb, obj, "before_after", 1, new_ary);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 test.rb

 ```Ruby

 class Example_Class

-	def method_name(a)

-		puts a

-		puts a.class

-	end

-	def before_after(a)

-		puts a

-	end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

+  def before_after(a)

+    puts a

+  end

 end

 Example_Class.new

 ```

diff --git a/doc/api/mruby/hash.h.md b/doc/api/mruby/hash.h.md
index b7962696c..fa12ea670 100644
--- a/doc/api/mruby/hash.h.md
+++ b/doc/api/mruby/hash.h.md
@@ -17,19 +17,18 @@ to Hash.new.
 #include "mruby/hash.h" // Needs the hash header.

 #include "mruby/compile.h"

 

-

 int main(int argc, char *argv[])

-{   

-    mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-    mrb_value new_hash; // Declare variable.

-     FILE *fp = fopen("test_ext.rb","r");

-     new_hash = mrb_hash_new(mrb);  // Initialize hash.

-     mrb_value obj = mrb_load_file(mrb,fp);

-     mrb_funcall(mrb, obj, "method_name", 1, new_hash);

-     fclose(fp);

-     mrb_close(mrb);

-    return 0;

+{

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  mrb_value new_hash; // Declare variable.

+  FILE *fp = fopen("test_ext.rb","r");

+  new_hash = mrb_hash_new(mrb);  // Initialize hash.

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_funcall(mrb, obj, "method_name", 1, new_hash);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 

@@ -37,10 +36,10 @@ int main(int argc, char *argv[])
 

 ``` Ruby

 class Example_Class

-    def method_name(a)

-        puts a

-        puts a.class

-    end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

 end

 Example_Class.new

 ```

@@ -67,22 +66,21 @@ a = {:da_key => 80}
 #include "mruby/hash.h" // Needs the hash header.

 #include "mruby/compile.h"

 

-

 int main(int argc, char *argv[])

-{   

-    mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-     mrb_value new_hash; // Declare variable.

-     mrb_sym hash_key = mrb_intern_cstr(mrb, "da_key"); // Declare a symbol.

-     mrb_int hash_value = 80; // Declare a fixnum value.

-     FILE *fp = fopen("test_ext.rb","r");

-     new_hash = mrb_hash_new(mrb);  // Initialize hash.

-     mrb_value obj = mrb_load_file(mrb,fp);

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key), mrb_fixnum_value(hash_value)); // Set values to hash.

-     mrb_funcall(mrb, obj, "method_name", 1, new_hash);

-     fclose(fp);

-     mrb_close(mrb);

-    return 0;

+{

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  mrb_value new_hash; // Declare variable.

+  mrb_sym hash_key = mrb_intern_cstr(mrb, "da_key"); // Declare a symbol.

+  mrb_int hash_value = 80; // Declare a fixnum value.

+  FILE *fp = fopen("test_ext.rb","r");

+  new_hash = mrb_hash_new(mrb);  // Initialize hash.

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key), mrb_fixnum_value(hash_value)); // Set values to hash.

+  mrb_funcall(mrb, obj, "method_name", 1, new_hash);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 

@@ -90,10 +88,10 @@ int main(int argc, char *argv[])
 

 ```Ruby

 class Example_Class

-    def method_name(a)

-        puts a

-        puts a.class

-    end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

 end

 Example_Class.new

 ```

@@ -131,25 +129,25 @@ a[:da_key]
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{   

-    mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-     mrb_value new_hash; // Declare variable for new hash object.

-     mrb_value get_hash_value; // Declare variable for getting a value from a hash.

-     mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.

-     mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

-     mrb_int hash_value_a = 80; // Declare a fixnum value.

-     mrb_int hash_value_b = 90; // Declare a fixnum value.

-     FILE *fp = fopen("test_ext.rb","r");

-     new_hash = mrb_hash_new(mrb);  // Initialize hash.

-     mrb_value obj = mrb_load_file(mrb,fp);

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

-     get_hash_value = mrb_hash_get(mrb, new_hash, mrb_symbol_value(hash_key_b)); // Get value from hash.

-     mrb_funcall(mrb, obj, "method_name", 1, get_hash_value);

-     fclose(fp);

-     mrb_close(mrb);

-    return 0;

+{

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  mrb_value new_hash; // Declare variable for new hash object.

+  mrb_value get_hash_value; // Declare variable for getting a value from a hash.

+  mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.

+  mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

+  mrb_int hash_value_a = 80; // Declare a fixnum value.

+  mrb_int hash_value_b = 90; // Declare a fixnum value.

+  FILE *fp = fopen("test_ext.rb","r");

+  new_hash = mrb_hash_new(mrb);  // Initialize hash.

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

+  get_hash_value = mrb_hash_get(mrb, new_hash, mrb_symbol_value(hash_key_b)); // Get value from hash.

+  mrb_funcall(mrb, obj, "method_name", 1, get_hash_value);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 

@@ -157,10 +155,10 @@ int main(int argc, char *argv[])
 

 ```Ruby

 class Example_Class

-    def method_name(a)

-        puts a

-        puts a.class

-    end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

 end

 Example_Class.new

 ```

@@ -198,26 +196,27 @@ a.delete(:da_key2)
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{   

-    mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-     mrb_value new_hash; // Declare variable for new hash object.

-     mrb_value get_hash_value; // Declare variable for getting a value from a hash.

-     mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.

-     mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

-     mrb_int hash_value_a = 80; // Declare a fixnum value.

-     mrb_int hash_value_b = 90; // Declare a fixnum value.

-     FILE *fp = fopen("test_ext.rb","r");

-     new_hash = mrb_hash_new(mrb);  // Initialize hash.

-     mrb_value obj = mrb_load_file(mrb,fp);

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

-     mrb_funcall(mrb, obj, "method_name", 1, new_hash);

-     mrb_hash_delete_key(mrb, new_hash, mrb_symbol_value(hash_key_b));

-     mrb_funcall(mrb, obj, "another_method_name", 1, new_hash);

-     fclose(fp);

-     mrb_close(mrb);

-    return 0;

+{

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  mrb_value new_hash; // Declare variable for new hash object.

+  mrb_value get_hash_value; // Declare variable for getting a value from a hash.

+  mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.   

+  mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

+  mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

+  mrb_int hash_value_a = 80; // Declare a fixnum value.

+  mrb_int hash_value_b = 90; // Declare a fixnum value.

+  FILE *fp = fopen("test_ext.rb","r");

+  new_hash = mrb_hash_new(mrb);  // Initialize hash.

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

+  mrb_funcall(mrb, obj, "method_name", 1, new_hash);

+  mrb_hash_delete_key(mrb, new_hash, mrb_symbol_value(hash_key_b));

+  mrb_funcall(mrb, obj, "another_method_name", 1, new_hash);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 

@@ -225,14 +224,14 @@ int main(int argc, char *argv[])
 

 ```Ruby

 class Example_Class

-    def method_name(a)

-        puts "Hash pre deletion #{a}"

-        #puts a.class

-    end

-    # Show deleted key and value pair.

-    def another_method_name(a)

-        puts "Hash post deletion #{a}"

-    end

+  def method_name(a)

+    puts "Hash pre deletion #{a}"

+    #puts a.class

+  end

+  # Show deleted key and value pair.

+  def another_method_name(a)

+    puts "Hash post deletion #{a}"

+  end

 end

 Example_Class.new

 ```

@@ -265,25 +264,25 @@ and what class the passed in value is. This example gets an array of keys from a
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{   

-    mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-     mrb_value new_hash; // Declare variable for new hash object.

-     mrb_value get_hash_keys; // Declare variable for getting an array of keys.

-     mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.

-     mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

-     mrb_int hash_value_a = 80; // Declare a fixnum value.

-     mrb_int hash_value_b = 90; // Declare a fixnum value.

-     FILE *fp = fopen("test_ext.rb","r");

-     new_hash = mrb_hash_new(mrb);  // Initialize hash.

-     mrb_value obj = mrb_load_file(mrb,fp);

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

-     get_hash_keys = mrb_hash_keys(mrb, new_hash); // get an array of keys.

-     mrb_funcall(mrb, obj, "method_name", 1, get_hash_keys);

-     fclose(fp);

-     mrb_close(mrb);

-    return 0;

+{

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  mrb_value new_hash; // Declare variable for new hash object.

+  mrb_value get_hash_keys; // Declare variable for getting an array of keys.

+  mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.

+  mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

+  mrb_int hash_value_a = 80; // Declare a fixnum value.

+  mrb_int hash_value_b = 90; // Declare a fixnum value.

+  FILE *fp = fopen("test_ext.rb","r");

+  new_hash = mrb_hash_new(mrb);  // Initialize hash.

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

+  get_hash_keys = mrb_hash_keys(mrb, new_hash); // get an array of keys.

+  mrb_funcall(mrb, obj, "method_name", 1, get_hash_keys);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 

@@ -291,10 +290,10 @@ int main(int argc, char *argv[])
 

 ```Ruby

 class Example_Class

-    def method_name(a)

-        puts a

-        puts a.class

-    end

+  def method_name(a)

+    puts a

+    puts a.class

+  end

 end

 Example_Class.new

 ```

@@ -332,26 +331,26 @@ a.clear
 #include "mruby/compile.h"

 

 int main(int argc, char *argv[])

-{   

-    mrb_state *mrb = mrb_open();

-    if (!mrb) { /* handle error */ }

-     mrb_value new_hash; // Declare variable for new hash object.

-     mrb_value get_hash; // Declare variable for getting a hash.

-     mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.

-     mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

-     mrb_int hash_value_a = 80; // Declare a fixnum value.

-     mrb_int hash_value_b = 90; // Declare a fixnum value.

-     FILE *fp = fopen("test_ext.rb","r");

-     new_hash = mrb_hash_new(mrb);  // Initialize hash.

-     mrb_value obj = mrb_load_file(mrb,fp);

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

-     mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

-     mrb_funcall(mrb, obj, "method_name", 1, new_hash);

-     get_hash = mrb_hash_clear(mrb, new_hash);

-     mrb_funcall(mrb, obj, "another_method_name", 1, get_hash);

-     fclose(fp);

-     mrb_close(mrb);

-    return 0;

+{

+  mrb_state *mrb = mrb_open();

+  if (!mrb) { /* handle error */ }

+  mrb_value new_hash; // Declare variable for new hash object.

+  mrb_value get_hash; // Declare variable for getting a hash.

+  mrb_sym hash_key_a = mrb_intern_cstr(mrb, "da_key1"); // Declare a symbol.

+  mrb_sym hash_key_b = mrb_intern_cstr(mrb, "da_key2"); // Declare a symbol.

+  mrb_int hash_value_a = 80; // Declare a fixnum value.

+  mrb_int hash_value_b = 90; // Declare a fixnum value.

+  FILE *fp = fopen("test_ext.rb","r");

+  new_hash = mrb_hash_new(mrb);  // Initialize hash.

+  mrb_value obj = mrb_load_file(mrb,fp);

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_a), mrb_fixnum_value(hash_value_a)); // Set values to hash.

+  mrb_hash_set(mrb, new_hash, mrb_symbol_value(hash_key_b), mrb_fixnum_value(hash_value_b)); // Set values to hash.

+  mrb_funcall(mrb, obj, "method_name", 1, new_hash);

+  get_hash = mrb_hash_clear(mrb, new_hash);

+  mrb_funcall(mrb, obj, "another_method_name", 1, get_hash);

+  fclose(fp);

+  mrb_close(mrb);

+  return 0;

 }

 ```

 

@@ -359,14 +358,14 @@ int main(int argc, char *argv[])
 

 ```Ruby

 class Example_Class

-    def method_name(a)

-        puts "Hash pre clear #{a}"

-        #puts a.class

-    end

-    # Show clear hash.

-    def another_method_name(a)

-        puts "Hash post clear #{a}"

-    end

+  def method_name(a)

+    puts "Hash pre clear #{a}"

+    #puts a.class

+  end

+  # Show clear hash.

+  def another_method_name(a)

+    puts "Hash post clear #{a}"

+  end

 end

 Example_Class.new

 ```

diff --git a/doc/api/mruby/value.h.md b/doc/api/mruby/value.h.md
index f3ae2d421..fbf2dadf1 100644
--- a/doc/api/mruby/value.h.md
+++ b/doc/api/mruby/value.h.md
@@ -38,10 +38,10 @@ main(void)
 test.rb

 ```Ruby

 class My_Class

-	def method_name(s)

-		puts s

-		puts s.class

-	end

+  def method_name(s)

+    puts s

+    puts s.class

+  end

 end

 a = My_Class.new

 ```

@@ -86,10 +86,10 @@ main(void)
 test.rb

 ```Ruby

 class My_Class

-	def method_name(s)

-		puts s

-		puts s.class

-	end

+  def method_name(s)

+    puts s

+    puts s.class

+  end

 end

 a = My_Class.new

 ```

@@ -134,10 +134,10 @@ main(void)
 test.rb

 ```Ruby

 class My_Class

-	def method_name(s)

-		puts s

-		puts s.class

-	end

+  def method_name(s)

+    puts s

+    puts s.class

+  end

 end

 a = My_Class.new

 ```

@@ -181,10 +181,10 @@ main(void)
 test.rb

 ```Ruby

 class My_Class

-	def method_name(s)

-		puts s

-		puts s.class

-	end

+  def method_name(s)

+    puts s

+    puts s.class

+  end

 end

 a = My_Class.new

 ```

@@ -229,10 +229,10 @@ main(void)
 test.rb

 ```Ruby

 class My_Class

-	def method_name(s)

-		puts s

-		puts s.class

-	end

+  def method_name(s)

+    puts s

+    puts s.class

+  end

 end

 a = My_Class.new

 ```