stripped trailing spaces.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@22552 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 190 insertions, 190 deletions

diff --git a/array.c b/array.c
index 8ec325c0c..796740eba 100644
--- a/array.c
+++ b/array.c
@@ -95,7 +95,7 @@ memfill(register VALUE *mem, register long size, register VALUE val)
         ARY_SET_HEAP_LEN(ary, n); \
     } \
     assert(RARRAY_LEN(ary) == n); \
-} while (0) 
+} while (0)
 #define ARY_INCREASE_PTR(ary, n) do  { \
     assert(!ARY_EMBED_P(ary)); \
     assert(!OBJ_FROZEN(ary)); \
@@ -144,31 +144,31 @@ static void
 ary_resize_capa(VALUE ary, long capacity)
 {
     assert(RARRAY_LEN(ary) <= capacity);
-    assert(!OBJ_FROZEN(ary)); 
-    assert(!ARY_SHARED_P(ary)); 
+    assert(!OBJ_FROZEN(ary));
+    assert(!ARY_SHARED_P(ary));
     if (capacity > RARRAY_EMBED_LEN_MAX) {
         if (ARY_EMBED_P(ary)) {
-            long len = ARY_EMBED_LEN(ary); 
+            long len = ARY_EMBED_LEN(ary);
             VALUE *ptr = ALLOC_N(VALUE, (capacity));
-            MEMCPY(ptr, ARY_EMBED_PTR(ary), VALUE, len); 
-            FL_UNSET_EMBED(ary); 
-            ARY_SET_PTR(ary, ptr); 
-            ARY_SET_HEAP_LEN(ary, len); 
+            MEMCPY(ptr, ARY_EMBED_PTR(ary), VALUE, len);
+            FL_UNSET_EMBED(ary);
+            ARY_SET_PTR(ary, ptr);
+            ARY_SET_HEAP_LEN(ary, len);
         }
-        else { 
+        else {
             REALLOC_N(RARRAY(ary)->as.heap.ptr, VALUE, (capacity));
         }
-        ARY_SET_CAPA(ary, (capacity)); 
+        ARY_SET_CAPA(ary, (capacity));
     }
     else {
         if (!ARY_EMBED_P(ary)) {
-            long len = RARRAY_LEN(ary); 
+            long len = RARRAY_LEN(ary);
             VALUE *ptr = RARRAY_PTR(ary);
             if (len > capacity) len = capacity;
-            MEMCPY(RARRAY(ary)->as.ary, ptr, VALUE, len); 
-            FL_SET_EMBED(ary); 
-            ARY_SET_LEN(ary, len); 
-            xfree(ptr); 
+            MEMCPY(RARRAY(ary)->as.ary, ptr, VALUE, len);
+            FL_SET_EMBED(ary);
+            ARY_SET_LEN(ary, len);
+            xfree(ptr);
         }
     }
 }
@@ -458,11 +458,11 @@ rb_check_array_type(VALUE ary)
  *  Try to convert <i>obj</i> into an array, using to_ary method.
  *  Returns converted array or nil if <i>obj</i> cannot be converted
  *  for any reason.  This method is to check if an argument is an
- *  array.  
+ *  array.
  *
  *     Array.try_convert([1])   # => [1]
  *     Array.try_convert("1")   # => nil
- *     
+ *
  *     if tmp = Array.try_convert(arg)
  *       # the argument is an array
  *     elsif tmp = String.try_convert(arg)
@@ -496,22 +496,22 @@ rb_ary_s_try_convert(VALUE dummy, VALUE ary)
  *     Array.new
  *     Array.new(2)
  *     Array.new(5, "A")
- * 
+ *
  *     # only one copy of the object is created
  *     a = Array.new(2, Hash.new)
  *     a[0]['cat'] = 'feline'
  *     a
  *     a[1]['cat'] = 'Felix'
  *     a
- * 
+ *
  *     # here multiple copies are created
  *     a = Array.new(2) { Hash.new }
  *     a[0]['cat'] = 'feline'
  *     a
- * 
+ *
  *     squares = Array.new(5) {|i| i*i}
  *     squares
- * 
+ *
  *     copy = Array.new(squares)
  */
 
@@ -571,8 +571,8 @@ rb_ary_initialize(int argc, VALUE *argv, VALUE ary)
 }
 
 
-/* 
-* Returns a new array populated with the given objects. 
+/*
+* Returns a new array populated with the given objects.
 *
 *   Array.[]( 1, 'a', /^A/ )
 *   Array[ 1, 'a', /^A/ ]
@@ -678,7 +678,7 @@ ary_take_first_or_last(int argc, VALUE *argv, VALUE ary, enum ary_take_pos_flags
 /*
  *  call-seq:
  *     array << obj            -> array
- *  
+ *
  *  Append---Pushes the given object on to the end of this array. This
  *  expression returns the array itself, so several appends
  *  may be chained together.
@@ -695,16 +695,16 @@ rb_ary_push(VALUE ary, VALUE item)
     return ary;
 }
 
-/* 
+/*
  *  call-seq:
  *     array.push(obj, ... )   -> array
- *  
+ *
  *  Append---Pushes the given object(s) on to the end of this array. This
  *  expression returns the array itself, so several appends
  *  may be chained together.
  *
  *     a = [ "a", "b", "c" ]
- *     a.push("d", "e", "f")  
+ *     a.push("d", "e", "f")
  *             #=> ["a", "b", "c", "d", "e", "f"]
  */
 
@@ -739,13 +739,13 @@ rb_ary_pop(VALUE ary)
  *  call-seq:
  *     array.pop    -> obj or nil
  *     array.pop(n) -> array
- *  
+ *
  *  Removes the last element from <i>self</i> and returns it, or
  *  <code>nil</code> if the array is empty.
  *
  *  If a number _n_ is given, returns an array of the last n elements
  *  (or less) just like <code>array.slice!(-n, n)</code> does.
- *     
+ *
  *     a = [ "a", "b", "c", "d" ]
  *     a.pop     #=> "d"
  *     a.pop(2)  #=> ["b", "c"]
@@ -796,14 +796,14 @@ rb_ary_shift(VALUE ary)
  *  call-seq:
  *     array.shift    -> obj or nil
  *     array.shift(n) -> array
- *  
+ *
  *  Returns the first element of <i>self</i> and removes it (shifting all
  *  other elements down by one). Returns <code>nil</code> if the array
  *  is empty.
  *
  *  If a number _n_ is given, returns an array of the first n elements
  *  (or less) just like <code>array.slice!(0, n)</code> does.
- *     
+ *
  *     args = [ "-m", "-q", "filename" ]
  *     args.shift     #=> "-m"
  *     args           #=> ["-q", "filename"]
@@ -840,10 +840,10 @@ rb_ary_shift_m(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     array.unshift(obj, ...)  -> array
- *  
+ *
  *  Prepends objects to the front of <i>array</i>.
  *  other elements up one.
- *     
+ *
  *     a = [ "b", "c", "d" ]
  *     a.unshift("a")   #=> ["a", "b", "c", "d"]
  *     a.unshift(1, 2)  #=> [ 1, 2, "a", "b", "c", "d"]
@@ -864,7 +864,7 @@ rb_ary_unshift_m(int argc, VALUE *argv, VALUE ary)
     MEMMOVE(RARRAY_PTR(ary) + argc, RARRAY_PTR(ary), VALUE, len);
     MEMCPY(RARRAY_PTR(ary), argv, VALUE, argc);
     ARY_INCREASE_LEN(ary, argc);
-    
+
     return ary;
 }
 
@@ -911,7 +911,7 @@ rb_ary_subseq(VALUE ary, long beg, long len)
     return ary_make_partial(ary, klass, beg, len);
 }
 
-/* 
+/*
  *  call-seq:
  *     array[index]                -> obj      or nil
  *     array[start, length]        -> an_array or nil
@@ -977,7 +977,7 @@ rb_ary_aref(int argc, VALUE *argv, VALUE ary)
     return rb_ary_entry(ary, NUM2LONG(arg));
 }
 
-/* 
+/*
  *  call-seq:
  *     array.at(index)   ->   obj  or nil
  *
@@ -1000,11 +1000,11 @@ rb_ary_at(VALUE ary, VALUE pos)
  *  call-seq:
  *     array.first     ->   obj or nil
  *     array.first(n)  ->   an_array
- *  
+ *
  *  Returns the first element, or the first +n+ elements, of the array.
  *  If the array is empty, the first form returns <code>nil</code>, and the
  *  second form returns an empty array.
- *     
+ *
  *     a = [ "q", "r", "s", "t" ]
  *     a.first     #=> "q"
  *     a.first(2)  #=> ["q", "r"]
@@ -1026,10 +1026,10 @@ rb_ary_first(int argc, VALUE *argv, VALUE ary)
  *  call-seq:
  *     array.last     ->  obj or nil
  *     array.last(n)  ->  an_array
- *  
+ *
  *  Returns the last element(s) of <i>self</i>. If the array is empty,
  *  the first form returns <code>nil</code>.
- *     
+ *
  *     a = [ "w", "x", "y", "z" ]
  *     a.last     #=> "z"
  *     a.last(2)  #=> ["y", "z"]
@@ -1052,14 +1052,14 @@ rb_ary_last(int argc, VALUE *argv, VALUE ary)
  *     array.fetch(index)                    -> obj
  *     array.fetch(index, default )          -> obj
  *     array.fetch(index) {|index| block }   -> obj
- *  
+ *
  *  Tries to return the element at position <i>index</i>. If the index
  *  lies outside the array, the first form throws an
  *  <code>IndexError</code> exception, the second form returns
  *  <i>default</i>, and the third form returns the value of invoking
  *  the block, passing in the index. Negative values of <i>index</i>
  *  count from the end of the array.
- *     
+ *
  *     a = [ 11, 22, 33, 44 ]
  *     a.fetch(1)               #=> 22
  *     a.fetch(-1)              #=> 44
@@ -1098,12 +1098,12 @@ rb_ary_fetch(int argc, VALUE *argv, VALUE ary)
  *  call-seq:
  *     array.index(obj)           ->  int or nil
  *     array.index {|item| block} ->  int or nil
- *  
+ *
  *  Returns the index of the first object in <i>self</i> such that is
  *  <code>==</code> to <i>obj</i>. If a block is given instead of an
  *  argument, returns first object for which <em>block</em> is true.
  *  Returns <code>nil</code> if no match is found.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.index("b")        #=> 1
  *     a.index("z")        #=> nil
@@ -1138,12 +1138,12 @@ rb_ary_index(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     array.rindex(obj)    ->  int or nil
- *  
+ *
  *  Returns the index of the last object in <i>array</i>
  *  <code>==</code> to <i>obj</i>. If a block is given instead of an
  *  argument, returns first object for which <em>block</em> is
  *  true. Returns <code>nil</code> if no match is found.
- *     
+ *
  *     a = [ "a", "b", "b", "b", "c" ]
  *     a.rindex("b")        #=> 3
  *     a.rindex("z")        #=> nil
@@ -1248,7 +1248,7 @@ rb_ary_splice(VALUE ary, long beg, long len, VALUE rpl)
     }
 }
 
-/* 
+/*
  *  call-seq:
  *     array[index]         = obj                     ->  obj
  *     array[start, length] = obj or an_array or nil  ->  obj or an_array or nil
@@ -1264,7 +1264,7 @@ rb_ary_splice(VALUE ary, long beg, long len, VALUE rpl)
  *  zero. An +IndexError+ is raised if a negative index points
  *  past the beginning of the array. See also
  *  <code>Array#push</code>, and <code>Array#unshift</code>.
- * 
+ *
  *     a = Array.new
  *     a[4] = "4";                 #=> [nil, nil, nil, nil, "4"]
  *     a[0, 3] = [ 'a', 'b', 'c' ] #=> ["a", "b", "c", nil, "4"]
@@ -1309,10 +1309,10 @@ fixnum:
 /*
  *  call-seq:
  *     array.insert(index, obj...)  -> array
- *  
+ *
  *  Inserts the given values before the element with the given index
  *  (which may be negative).
- *     
+ *
  *     a = %w{ a b c d }
  *     a.insert(2, 99)         #=> ["a", "b", 99, "c", "d"]
  *     a.insert(-2, 1, 2, 3)   #=> ["a", "b", 99, "c", 1, 2, 3, "d"]
@@ -1341,15 +1341,15 @@ rb_ary_insert(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     array.each {|item| block }   ->   array
- *  
+ *
  *  Calls <i>block</i> once for each element in <i>self</i>, passing that
  *  element as a parameter.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.each {|x| print x, " -- " }
- *     
+ *
  *  produces:
- *     
+ *
  *     a -- b -- c --
  */
 
@@ -1368,15 +1368,15 @@ rb_ary_each(VALUE ary)
 /*
  *  call-seq:
  *     array.each_index {|index| block }  ->  array
- *  
+ *
  *  Same as <code>Array#each</code>, but passes the index of the element
  *  instead of the element itself.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.each_index {|x| print x, " -- " }
- *     
+ *
  *  produces:
- *     
+ *
  *     0 -- 1 -- 2 --
  */
 
@@ -1394,16 +1394,16 @@ rb_ary_each_index(VALUE ary)
 
 /*
  *  call-seq:
- *     array.reverse_each {|item| block } 
- *  
+ *     array.reverse_each {|item| block }
+ *
  *  Same as <code>Array#each</code>, but traverses <i>self</i> in reverse
  *  order.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.reverse_each {|x| print x, " " }
- *     
+ *
  *  produces:
- *     
+ *
  *     c b a
  */
 
@@ -1426,9 +1426,9 @@ rb_ary_reverse_each(VALUE ary)
 /*
  *  call-seq:
  *     array.length -> int
- *  
+ *
  *  Returns the number of elements in <i>self</i>. May be zero.
- *     
+ *
  *     [ 1, 2, 3, 4, 5 ].length   #=> 5
  */
 
@@ -1442,9 +1442,9 @@ rb_ary_length(VALUE ary)
 /*
  *  call-seq:
  *     array.empty?   -> true or false
- *  
+ *
  *  Returns <code>true</code> if <i>self</i> array contains no elements.
- *     
+ *
  *     [].empty?   #=> true
  */
 
@@ -1543,10 +1543,10 @@ rb_ary_join(VALUE ary, VALUE sep)
 /*
  *  call-seq:
  *     array.join(sep=$,)    -> str
- *  
+ *
  *  Returns a string created by converting each element of the array to
  *  a string, separated by <i>sep</i>.
- *     
+ *
  *     [ "a", "b", "c" ].join        #=> "abc"
  *     [ "a", "b", "c" ].join("-")   #=> "a-b-c"
  */
@@ -1558,7 +1558,7 @@ rb_ary_join_m(int argc, VALUE *argv, VALUE ary)
 
     rb_scan_args(argc, argv, "01", &sep);
     if (NIL_P(sep)) sep = rb_output_fs;
-    
+
     return rb_ary_join(ary, sep);
 }
 
@@ -1609,7 +1609,7 @@ rb_ary_to_s(VALUE ary)
 /*
  *  call-seq:
  *     array.to_a     -> array
- *  
+ *
  *  Returns _self_. If called on a subclass of Array, converts
  *  the receiver to an Array object.
  */
@@ -1628,7 +1628,7 @@ rb_ary_to_a(VALUE ary)
 /*
  *  call-seq:
  *     array.to_ary -> array
- *  
+ *
  *  Returns _self_.
  */
 
@@ -1660,10 +1660,10 @@ rb_ary_reverse(VALUE ary)
 
 /*
  *  call-seq:
- *     array.reverse!   -> array 
- *  
+ *     array.reverse!   -> array
+ *
  *  Reverses _self_ in place.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.reverse!       #=> ["c", "b", "a"]
  *     a                #=> ["c", "b", "a"]
@@ -1678,9 +1678,9 @@ rb_ary_reverse_bang(VALUE ary)
 /*
  *  call-seq:
  *     array.reverse -> an_array
- *  
+ *
  *  Returns a new array containing <i>self</i>'s elements in reverse order.
- *     
+ *
  *     [ "a", "b", "c" ].reverse   #=> ["c", "b", "a"]
  *     [ 1 ].reverse               #=> [1]
  */
@@ -1763,14 +1763,14 @@ sort_2(const void *ap, const void *bp, void *dummy)
 /*
  *  call-seq:
  *     array.sort!                   -> array
- *     array.sort! {| a,b | block }  -> array 
- *  
+ *     array.sort! {| a,b | block }  -> array
+ *
  *  Sorts _self_. Comparisons for
  *  the sort will be done using the <code><=></code> operator or using
  *  an optional code block. The block implements a comparison between
  *  <i>a</i> and <i>b</i>, returning -1, 0, or +1. See also
  *  <code>Enumerable#sort_by</code>.
- *     
+ *
  *     a = [ "d", "a", "e", "c", "b" ]
  *     a.sort                    #=> ["a", "b", "c", "d", "e"]
  *     a.sort {|x,y| y <=> x }   #=> ["e", "d", "c", "b", "a"]
@@ -1823,7 +1823,7 @@ rb_ary_sort_bang(VALUE ary)
                 ARY_SET_PTR(ary, RARRAY_PTR(tmp));
                 ARY_SET_HEAP_LEN(ary, RARRAY_LEN(tmp));
                 ARY_SET_CAPA(ary, ARY_CAPA(tmp));
-            } 
+            }
             /* tmp was lost ownership for the ptr */
             FL_UNSET(tmp, FL_FREEZE);
             FL_SET_EMBED(tmp);
@@ -1838,15 +1838,15 @@ rb_ary_sort_bang(VALUE ary)
 
 /*
  *  call-seq:
- *     array.sort                   -> an_array 
- *     array.sort {| a,b | block }  -> an_array 
- *  
+ *     array.sort                   -> an_array
+ *     array.sort {| a,b | block }  -> an_array
+ *
  *  Returns a new array created by sorting <i>self</i>. Comparisons for
  *  the sort will be done using the <code><=></code> operator or using
  *  an optional code block. The block implements a comparison between
  *  <i>a</i> and <i>b</i>, returning -1, 0, or +1. See also
  *  <code>Enumerable#sort_by</code>.
- *     
+ *
  *     a = [ "d", "a", "e", "c", "b" ]
  *     a.sort                    #=> ["a", "b", "c", "d", "e"]
  *     a.sort {|x,y| y <=> x }   #=> ["e", "d", "c", "b", "a"]
@@ -1892,11 +1892,11 @@ rb_ary_sort_by_bang(VALUE ary)
  *  call-seq:
  *     array.collect {|item| block }  -> an_array
  *     array.map     {|item| block }  -> an_array
- *  
- *  Invokes <i>block</i> once for each element of <i>self</i>. Creates a 
+ *
+ *  Invokes <i>block</i> once for each element of <i>self</i>. Creates a
  *  new array containing the values returned by the block.
  *  See also <code>Enumerable#collect</code>.
- *     
+ *
  *     a = [ "a", "b", "c", "d" ]
  *     a.collect {|x| x + "!" }   #=> ["a!", "b!", "c!", "d!"]
  *     a                          #=> ["a", "b", "c", "d"]
@@ -1917,7 +1917,7 @@ rb_ary_collect(VALUE ary)
 }
 
 
-/* 
+/*
  *  call-seq:
  *     array.collect! {|item| block }   ->   array
  *     array.map!     {|item| block }   ->   array
@@ -1925,7 +1925,7 @@ rb_ary_collect(VALUE ary)
  *  Invokes the block once for each element of _self_, replacing the
  *  element with the value returned by _block_.
  *  See also <code>Enumerable#collect</code>.
- *   
+ *
  *     a = [ "a", "b", "c", "d" ]
  *     a.collect! {|x| x + "!" }
  *     a             #=>  [ "a!", "b!", "c!", "d!" ]
@@ -1972,15 +1972,15 @@ rb_get_values_at(VALUE obj, long olen, int argc, VALUE *argv, VALUE (*func) (VAL
     return result;
 }
 
-/* 
+/*
  *  call-seq:
  *     array.values_at(selector,... )  -> an_array
  *
  *  Returns an array containing the elements in
  *  _self_ corresponding to the given selector(s). The selectors
- *  may be either integer indices or ranges. 
+ *  may be either integer indices or ranges.
  *  See also <code>Array#select</code>.
- * 
+ *
  *     a = %w{ a b c d e f }
  *     a.values_at(1, 3, 5)
  *     a.values_at(1, 3, 5, 7)
@@ -1998,11 +1998,11 @@ rb_ary_values_at(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     array.select {|item| block } -> an_array
- *  
+ *
  *  Invokes the block passing in successive elements from <i>array</i>,
  *  returning an array containing those elements for which the block
  *  returns a true value (equivalent to <code>Enumerable#select</code>).
- *     
+ *
  *     a = %w{ a b c d e f }
  *     a.select {|v| v =~ /[aeiou]/}   #=> ["a", "e"]
  */
@@ -2025,14 +2025,14 @@ rb_ary_select(VALUE ary)
 
 /*
  *  call-seq:
- *     array.delete(obj)            -> obj or nil 
+ *     array.delete(obj)            -> obj or nil
  *     array.delete(obj) { block }  -> obj or nil
- *  
+ *
  *  Deletes items from <i>self</i> that are equal to <i>obj</i>. If
  *  the item is not found, returns <code>nil</code>. If the optional
  *  code block is given, returns the result of <i>block</i> if the item
  *  is not found.
- *     
+ *
  *     a = [ "a", "b", "b", "b", "c" ]
  *     a.delete("b")                   #=> "b"
  *     a                               #=> ["a", "c"]
@@ -2101,11 +2101,11 @@ rb_ary_delete_at(VALUE ary, long pos)
 /*
  *  call-seq:
  *     array.delete_at(index)  -> obj or nil
- *  
+ *
  *  Deletes the element at the specified index, returning that element,
  *  or <code>nil</code> if the index is out of range. See also
  *  <code>Array#slice!</code>.
- *     
+ *
  *     a = %w( ant bat cat dog )
  *     a.delete_at(2)    #=> "cat"
  *     a                 #=> ["ant", "bat", "dog"]
@@ -2122,12 +2122,12 @@ rb_ary_delete_at_m(VALUE ary, VALUE pos)
  *  call-seq:
  *     array.slice!(index)         -> obj or nil
  *     array.slice!(start, length) -> sub_array or nil
- *     array.slice!(range)         -> sub_array or nil 
- *  
+ *     array.slice!(range)         -> sub_array or nil
+ *
  *  Deletes the element(s) given by an index (optionally with a length)
  *  or by a range. Returns the deleted object, subarray, or
  *  <code>nil</code> if the index is out of range.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.slice!(1)     #=> "b"
  *     a               #=> ["a", "c"]
@@ -2185,7 +2185,7 @@ rb_ary_slice_bang(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     array.reject! {|item| block }  -> array or nil
- *  
+ *
  *  Equivalent to <code>Array#delete_if</code>, deleting elements from
  *  _self_ for which the block evaluates to true, but returns
  *  <code>nil</code> if no changes were made. Also see
@@ -2217,7 +2217,7 @@ rb_ary_reject_bang(VALUE ary)
 /*
  *  call-seq:
  *     array.reject {|item| block }  -> an_array
- *  
+ *
  *  Returns a new array containing the items in _self_
  *  for which the block is not true.
  */
@@ -2234,10 +2234,10 @@ rb_ary_reject(VALUE ary)
 /*
  *  call-seq:
  *     array.delete_if {|item| block }  -> array
- *  
+ *
  *  Deletes every element of <i>self</i> for which <i>block</i> evaluates
  *  to <code>true</code>.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.delete_if {|x| x >= "b" }   #=> ["a"]
  */
@@ -2277,7 +2277,7 @@ take_items(VALUE obj, long n)
  *  call-seq:
  *     array.zip(arg, ...)                   -> an_array
  *     array.zip(arg, ...) {| arr | block }  -> nil
- *  
+ *
  *  Converts any arguments to arrays, then merges elements of
  *  <i>self</i> with corresponding elements from each argument. This
  *  generates a sequence of <code>self.size</code> <em>n</em>-element
@@ -2286,7 +2286,7 @@ take_items(VALUE obj, long n)
  *  <code>nil</code> values are supplied. If a block given, it is
  *  invoked for each output array, otherwise an array of arrays is
  *  returned.
- *     
+ *
  *     a = [ 4, 5, 6 ]
  *     b = [ 7, 8, 9 ]
  *     [1,2,3].zip(a, b)      #=> [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
@@ -2329,10 +2329,10 @@ rb_ary_zip(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     array.transpose -> an_array
- *  
+ *
  *  Assumes that <i>self</i> is an array of arrays and transposes the
  *  rows and columns.
- *     
+ *
  *     a = [[1,2], [3,4], [5,6]]
  *     a.transpose   #=> [[1, 3, 5], [2, 4, 6]]
  */
@@ -2368,10 +2368,10 @@ rb_ary_transpose(VALUE ary)
 /*
  *  call-seq:
  *     array.replace(other_array)  -> array
- *  
+ *
  *  Replaces the contents of <i>self</i> with the contents of
  *  <i>other_array</i>, truncating or expanding if necessary.
- *     
+ *
  *     a = [ "a", "b", "c", "d", "e" ]
  *     a.replace([ "x", "y", "z" ])   #=> ["x", "y", "z"]
  *     a                              #=> ["x", "y", "z"]
@@ -2387,7 +2387,7 @@ rb_ary_replace(VALUE copy, VALUE orig)
     if (RARRAY_LEN(orig) <= RARRAY_EMBED_LEN_MAX) {
         VALUE *ptr;
         VALUE shared = 0;
-        
+
         if (ARY_OWNS_HEAP_P(copy)) {
             xfree(RARRAY_PTR(copy));
         }
@@ -2419,7 +2419,7 @@ rb_ary_replace(VALUE copy, VALUE orig)
     return copy;
 }
 
-/* 
+/*
  *  call-seq:
  *     array.clear    ->  array
  *
@@ -2448,14 +2448,14 @@ rb_ary_clear(VALUE ary)
  *     array.fill {|index| block }                    -> array
  *     array.fill(start [, length] ) {|index| block } -> array
  *     array.fill(range) {|index| block }             -> array
- *  
+ *
  *  The first three forms set the selected elements of <i>self</i> (which
  *  may be the entire array) to <i>obj</i>. A <i>start</i> of
  *  <code>nil</code> is equivalent to zero. A <i>length</i> of
  *  <code>nil</code> is equivalent to <i>self.length</i>. The last three
  *  forms fill the array with the value of the block. The block is
  *  passed the absolute index of each element to be filled.
- *     
+ *
  *     a = [ "a", "b", "c", "d" ]
  *     a.fill("x")              #=> ["x", "x", "x", "x"]
  *     a.fill("z", 2, 2)        #=> ["x", "x", "z", "z"]
@@ -2535,13 +2535,13 @@ rb_ary_fill(int argc, VALUE *argv, VALUE ary)
     return ary;
 }
 
-/* 
+/*
  *  call-seq:
  *     array + other_array   -> an_array
  *
  *  Concatenation---Returns a new array built by concatenating the
  *  two arrays together to produce a third array.
- * 
+ *
  *     [ 1, 2, 3 ] + [ 4, 5 ]    #=> [ 1, 2, 3, 4, 5 ]
  */
 
@@ -2560,12 +2560,12 @@ rb_ary_plus(VALUE x, VALUE y)
     return z;
 }
 
-/* 
+/*
  *  call-seq:
  *     array.concat(other_array)   ->  array
  *
  *  Appends the elements in other_array to _self_.
- *  
+ *
  *     [ "a", "b" ].concat( ["c", "d"] ) #=> [ "a", "b", "c", "d" ]
  */
 
@@ -2581,7 +2581,7 @@ rb_ary_concat(VALUE x, VALUE y)
 }
 
 
-/* 
+/*
  *  call-seq:
  *     array * int     ->    an_array
  *     array * str     ->    a_string
@@ -2632,7 +2632,7 @@ rb_ary_times(VALUE ary, VALUE times)
     return ary2;
 }
 
-/* 
+/*
  *  call-seq:
  *     array.assoc(obj)   ->  an_array  or  nil
  *
@@ -2670,12 +2670,12 @@ rb_ary_assoc(VALUE ary, VALUE key)
 /*
  *  call-seq:
  *     array.rassoc(obj) -> an_array or nil
- *  
+ *
  *  Searches through the array whose elements are also arrays. Compares
  *  _obj_ with the second element of each contained array using
  *  <code>==</code>. Returns the first contained array that matches. See
  *  also <code>Array#assoc</code>.
- *     
+ *
  *     a = [ [ 1, "one"], [2, "two"], [3, "three"], ["ii", "two"] ]
  *     a.rassoc("two")    #=> [2, "two"]
  *     a.rassoc("four")   #=> nil
@@ -2710,7 +2710,7 @@ recursive_equal(VALUE ary1, VALUE ary2, int recur)
     return Qtrue;
 }
 
-/* 
+/*
  *  call-seq:
  *     array == other_array   ->   bool
  *
@@ -2803,11 +2803,11 @@ rb_ary_hash(VALUE ary)
 /*
  *  call-seq:
  *     array.include?(obj)   -> true or false
- *  
+ *
  *  Returns <code>true</code> if the given object is present in
  *  <i>self</i> (that is, if any object <code>==</code> <i>anObject</i>),
  *  <code>false</code> otherwise.
- *     
+ *
  *     a = [ "a", "b", "c" ]
  *     a.include?("b")   #=> true
  *     a.include?("z")   #=> false
@@ -2817,7 +2817,7 @@ VALUE
 rb_ary_includes(VALUE ary, VALUE item)
 {
     long i;
-    
+
     for (i=0; i<RARRAY_LEN(ary); i++) {
 	if (rb_equal(RARRAY_PTR(ary)[i], item)) {
 	    return Qtrue;
@@ -2846,7 +2846,7 @@ recursive_cmp(VALUE ary1, VALUE ary2, int recur)
     return Qundef;
 }
 
-/* 
+/*
  *  call-seq:
  *     array <=> other_array   ->  -1, 0, +1
  *
@@ -2860,7 +2860,7 @@ recursive_cmp(VALUE ary1, VALUE ary2, int recur)
  *  ``equal'' according to <code>Array#<=></code> if and only if they have
  *  the same length and the value of each element is equal to the
  *  value of the corresponding element in the other array.
- *  
+ *
  *     [ "a", "a", "c" ]    <=> [ "a", "b", "c" ]   #=> -1
  *     [ 1, 2, 3, 4, 5, 6 ] <=> [ 1, 2 ]            #=> +1
  *
@@ -2940,7 +2940,7 @@ ary_recycle_hash(VALUE hash)
     }
 }
 
-/* 
+/*
  *  call-seq:
  *     array - other_array    -> an_array
  *
@@ -2970,7 +2970,7 @@ rb_ary_diff(VALUE ary1, VALUE ary2)
     return ary3;
 }
 
-/* 
+/*
  *  call-seq:
  *     array & other_array
  *
@@ -3006,7 +3006,7 @@ rb_ary_and(VALUE ary1, VALUE ary2)
     return ary3;
 }
 
-/* 
+/*
  *  call-seq:
  *     array | other_array     ->  an_array
  *
@@ -3054,17 +3054,17 @@ push_value(st_data_t key, st_data_t val, st_data_t ary)
 /*
  *  call-seq:
  *     array.uniq! -> array or nil
- *  
+ *
  *  Removes duplicate elements from _self_.
  *  Returns <code>nil</code> if no changes are made (that is, no
  *  duplicates are found).
- *     
+ *
  *     a = [ "a", "a", "b", "b", "c" ]
  *     a.uniq!   #=> ["a", "b", "c"]
  *     b = [ "a", "b", "c" ]
  *     b.uniq!   #=> nil
  *     c = [ "a:def", "a:xyz", "b:abc", "b:xyz", "c:jkl" ]
- *     c.uniq! {|s| s[/^\w+/]}  #=> [ "a:def", "b:abc", "c:jkl" ] 
+ *     c.uniq! {|s| s[/^\w+/]}  #=> [ "a:def", "b:abc", "c:jkl" ]
  */
 
 static VALUE
@@ -3103,13 +3103,13 @@ rb_ary_uniq_bang(VALUE ary)
 /*
  *  call-seq:
  *     array.uniq   -> an_array
- *  
+ *
  *  Returns a new array by removing duplicate values in <i>self</i>.
- *     
+ *
  *     a = [ "a", "a", "b", "b", "c" ]
  *     a.uniq   #=> ["a", "b", "c"]
  *     c = [ "a:def", "a:xyz", "b:abc", "b:xyz", "c:jkl" ]
- *     c.uniq {|s| s[/^\w+/]}  #=> [ "a:def", "b:abc", "c:jkl" ] 
+ *     c.uniq {|s| s[/^\w+/]}  #=> [ "a:def", "b:abc", "c:jkl" ]
  */
 
 static VALUE
@@ -3138,7 +3138,7 @@ rb_ary_uniq(VALUE ary)
     return uniq;
 }
 
-/* 
+/*
  *  call-seq:
  *     array.compact!    ->   array  or  nil
  *
@@ -3158,7 +3158,7 @@ rb_ary_compact_bang(VALUE ary)
     rb_ary_modify(ary);
     p = t = RARRAY_PTR(ary);
     end = p + RARRAY_LEN(ary);
-    
+
     while (t < end) {
 	if (NIL_P(*t)) t++;
 	else *p++ = *t++;
@@ -3198,7 +3198,7 @@ rb_ary_compact(VALUE ary)
  *     array.count      -> int
  *     array.count(obj) -> int
  *     array.count { |item| block }  -> int
- *  
+ *
  *  Returns the number of elements.  If an argument is given, counts
  *  the number of elements which equals to <i>obj</i>.  If a block is
  *  given, counts the number of elements yielding a true value.
@@ -3298,12 +3298,12 @@ flatten(VALUE ary, int level, int *modified)
  *  call-seq:
  *     array.flatten! -> array or nil
  *     array.flatten!(level) -> array or nil
- *  
+ *
  *  Flattens _self_ in place.
  *  Returns <code>nil</code> if no modifications were made (i.e.,
  *  <i>array</i> contains no subarrays.)  If the optional <i>level</i>
  *  argument determines the level of recursion to flatten.
- *     
+ *
  *     a = [ 1, 2, [3, [4, 5] ] ]
  *     a.flatten!   #=> [1, 2, 3, 4, 5]
  *     a.flatten!   #=> nil
@@ -3333,12 +3333,12 @@ rb_ary_flatten_bang(int argc, VALUE *argv, VALUE ary)
  *  call-seq:
  *     array.flatten -> an_array
  *     array.flatten(level) -> an_array
- *  
+ *
  *  Returns a new array that is a one-dimensional flattening of this
  *  array (recursively). That is, for every element that is an array,
  *  extract its elements into the new array.  If the optional
  *  <i>level</i> argument determines the level of recursion to flatten.
- *     
+ *
  *     s = [ 1, 2, 3 ]           #=> [1, 2, 3]
  *     t = [ 4, 5, 6, [7, 8] ]   #=> [4, 5, 6, [7, 8]]
  *     a = [ s, t, 9, 10 ]       #=> [[1, 2, 3], [4, 5, 6, [7, 8]], 9, 10]
@@ -3366,7 +3366,7 @@ rb_ary_flatten(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     array.shuffle!        -> array
- *  
+ *
  *  Shuffles elements in _self_ in place.
  */
 
@@ -3390,9 +3390,9 @@ rb_ary_shuffle_bang(VALUE ary)
 /*
  *  call-seq:
  *     array.shuffle -> an_array
- *  
+ *
  *  Returns a new array with elements of this array shuffled.
- *     
+ *
  *     a = [ 1, 2, 3 ]           #=> [1, 2, 3]
  *     a.shuffle                 #=> [2, 3, 1]
  */
@@ -3410,11 +3410,11 @@ rb_ary_shuffle(VALUE ary)
  *  call-seq:
  *     array.sample        -> obj
  *     array.sample(n)     -> an_array
- *  
+ *
  *  Choose a random element, or the random +n+ elements, from the array.
  *  If the array is empty, the first form returns <code>nil</code>, and the
  *  second form returns an empty array.
- *  
+ *
  */
 
 
@@ -3424,7 +3424,7 @@ rb_ary_sample(int argc, VALUE *argv, VALUE ary)
     VALUE nv, result, *ptr;
     long n, len, i, j, k, idx[10];
 
-    len = RARRAY_LEN(ary); 
+    len = RARRAY_LEN(ary);
     if (argc == 0) {
 	if (len == 0) return Qnil;
 	i = len == 1 ? 0 : rb_genrand_real()*len;
@@ -3432,8 +3432,8 @@ rb_ary_sample(int argc, VALUE *argv, VALUE ary)
     }
     rb_scan_args(argc, argv, "1", &nv);
     n = NUM2LONG(nv);
-    ptr = RARRAY_PTR(ary); 
-    len = RARRAY_LEN(ary); 
+    ptr = RARRAY_PTR(ary);
+    len = RARRAY_LEN(ary);
     if (n > len) n = len;
     switch (n) {
       case 0: return rb_ary_new2(0);
@@ -3492,16 +3492,16 @@ rb_ary_sample(int argc, VALUE *argv, VALUE ary)
  *  call-seq:
  *     ary.cycle {|obj| block }
  *     ary.cycle(n) {|obj| block }
- *  
+ *
  *  Calls <i>block</i> for each element repeatedly _n_ times or
  *  forever if none or nil is given.  If a non-positive number is
  *  given or the array is empty, does nothing.  Returns nil if the
  *  loop has finished without getting interrupted.
- *     
+ *
  *     a = ["a", "b", "c"]
  *     a.cycle {|x| puts x }  # print, a, b, c, a, b, c,.. forever.
  *     a.cycle(2) {|x| puts x }  # print, a, b, c, a, b, c.
- *     
+ *
  */
 
 static VALUE
@@ -3534,9 +3534,9 @@ rb_ary_cycle(int argc, VALUE *argv, VALUE ary)
 /*
  * Recursively compute permutations of r elements of the set [0..n-1].
  * When we have a complete permutation of array indexes, copy the values
- * at those indexes into a new array and yield that array. 
+ * at those indexes into a new array and yield that array.
  *
- * n: the size of the set 
+ * n: the size of the set
  * r: the number of elements in each permutation
  * p: the array (of size r) that we're filling in
  * index: what index we're filling in now
@@ -3553,7 +3553,7 @@ permute0(long n, long r, long *p, long index, int *used, VALUE values)
 	    if (index < r-1) {             /* if not done yet */
 		used[i] = 1;               /* mark index used */
 		permute0(n, r, p, index+1, /* recurse */
-			 used, values);  
+			 used, values);
 		used[i] = 0;               /* index unused */
 	    }
 	    else {
@@ -3578,15 +3578,15 @@ permute0(long n, long r, long *p, long index, int *used, VALUE values)
  *     ary.permutation                        -> enumerator
  *     ary.permutation(n) { |p| block }       -> array
  *     ary.permutation(n)                     -> enumerator
- *  
+ *
  * When invoked with a block, yield all permutations of length <i>n</i>
  * of the elements of <i>ary</i>, then return the array itself.
  * If <i>n</i> is not specified, yield all permutations of all elements.
- * The implementation makes no guarantees about the order in which 
+ * The implementation makes no guarantees about the order in which
  * the permutations are yielded.
  *
  * When invoked without a block, return an enumerator object instead.
- * 
+ *
  * Examples:
  *
  *     a = [1, 2, 3]
@@ -3609,7 +3609,7 @@ rb_ary_permutation(int argc, VALUE *argv, VALUE ary)
     rb_scan_args(argc, argv, "01", &num);
     r = NIL_P(num) ? n : NUM2LONG(num);   /* Permutation size from argument */
 
-    if (r < 0 || n < r) { 
+    if (r < 0 || n < r) {
 	/* no permutations: yield nothing */
     }
     else if (r == 0) { /* exactly one permutation: the zero-length array */
@@ -3662,14 +3662,14 @@ combi_len(long n, long k)
  *  call-seq:
  *     ary.combination(n) { |c| block }    -> ary
  *     ary.combination(n)                  -> enumerator
- *  
- * When invoked with a block, yields all combinations of length <i>n</i> 
+ *
+ * When invoked with a block, yields all combinations of length <i>n</i>
  * of elements from <i>ary</i> and then returns <i>ary</i> itself.
- * The implementation makes no guarantees about the order in which 
+ * The implementation makes no guarantees about the order in which
  * the combinations are yielded.
  *
  * When invoked without a block, returns an enumerator object instead.
- *     
+ *
  * Examples:
  *
  *     a = [1, 2, 3, 4]
@@ -3679,7 +3679,7 @@ combi_len(long n, long k)
  *     a.combination(4).to_a  #=> [[1,2,3,4]]
  *     a.combination(0).to_a  #=> [[]] # one combination of length 0
  *     a.combination(5).to_a  #=> []   # no combinations of length 5
- *     
+ *
  */
 
 static VALUE
@@ -3729,11 +3729,11 @@ rb_ary_combination(VALUE ary, VALUE num)
 /*
  *  call-seq:
  *     ary.product(other_ary, ...)
- *  
+ *
  *  Returns an array of all combinations of elements from all arrays.
  *  The length of the returned array is the product of the length
  *  of ary and the argument arrays
- *     
+ *
  *     [1,2,3].product([4,5])     # => [[1,4],[1,5],[2,4],[2,5],[3,4],[3,5]]
  *     [1,2].product([1,2])       # => [[1,1],[1,2],[2,1],[2,2]]
  *     [1,2].product([3,4],[5,6]) # => [[1,3,5],[1,3,6],[1,4,5],[1,4,6],
@@ -3760,7 +3760,7 @@ rb_ary_product(int argc, VALUE *argv, VALUE ary)
     /* initialize the arrays of arrays */
     arrays[0] = ary;
     for (i = 1; i < n; i++) arrays[i] = to_ary(argv[i-1]);
-    
+
     /* initialize the counters for the arrays */
     for (i = 0; i < n; i++) counters[i] = 0;
 
@@ -3806,12 +3806,12 @@ rb_ary_product(int argc, VALUE *argv, VALUE ary)
 /*
  *  call-seq:
  *     ary.take(n)               => array
- *  
+ *
  *  Returns first n elements from <i>ary</i>.
- *     
+ *
  *     a = [1, 2, 3, 4, 5, 0]
  *     a.take(3)             # => [1, 2, 3]
- *     
+ *
  */
 
 static VALUE
@@ -3827,13 +3827,13 @@ rb_ary_take(VALUE obj, VALUE n)
 /*
  *  call-seq:
  *     ary.take_while {|arr| block }   => array
- *  
+ *
  *  Passes elements to the block until the block returns nil or false,
  *  then stops iterating and returns an array of all prior elements.
- *     
+ *
  *     a = [1, 2, 3, 4, 5, 0]
  *     a.take_while {|i| i < 3 }   # => [1, 2]
- *     
+ *
  */
 
 static VALUE
@@ -3851,13 +3851,13 @@ rb_ary_take_while(VALUE ary)
 /*
  *  call-seq:
  *     ary.drop(n)               => array
- *  
+ *
  *  Drops first n elements from <i>ary</i>, and returns rest elements
  *  in an array.
- *     
+ *
  *     a = [1, 2, 3, 4, 5, 0]
  *     a.drop(3)             # => [4, 5, 0]
- *     
+ *
  */
 
 static VALUE
@@ -3877,14 +3877,14 @@ rb_ary_drop(VALUE ary, VALUE n)
 /*
  *  call-seq:
  *     ary.drop_while {|arr| block }   => array
- *  
+ *
  *  Drops elements up to, but not including, the first element for
  *  which the block returns nil or false and returns an array
  *  containing the remaining elements.
- *     
+ *
  *     a = [1, 2, 3, 4, 5, 0]
  *     a.drop_while {|i| i < 3 }   # => [3, 4, 5, 0]
- *     
+ *
  */
 
 static VALUE
@@ -3901,11 +3901,11 @@ rb_ary_drop_while(VALUE ary)
 
 
 
-/* Arrays are ordered, integer-indexed collections of any object. 
- * Array indexing starts at 0, as in C or Java.  A negative index is 
- * assumed to be relative to the end of the array---that is, an index of -1 
- * indicates the last element of the array, -2 is the next to last 
- * element in the array, and so on. 
+/* Arrays are ordered, integer-indexed collections of any object.
+ * Array indexing starts at 0, as in C or Java.  A negative index is
+ * assumed to be relative to the end of the array---that is, an index of -1
+ * indicates the last element of the array, -2 is the next to last
+ * element in the array, and so on.
  */
 
 void