Typofix under doc directory

doc/contributing/glossary.md

@@ -10,7 +10,7 @@ Just a list of acronyms I've run across in the Ruby source code and their meanin
 | `cd` | Call Data. A data structure that points at the `ci` and the `cc`.  `iseq` objects points at the `cd`, and access call information and call caches via this structure |
 | `cfp`| Control Frame Pointer. Represents a Ruby stack frame.  Calling a method pushes a new frame (cfp), returning pops a frame. Points at  the `pc`, `sp`, `ep`, and the corresponding `iseq`|
 | `ci` | Call Information.  Refers to an `rb_callinfo` struct. Contains call information about the call site, including number of parameters to be passed, whether it they are keyword arguments or not, etc. Used in conjunction with the `cc` and `cd`. |
-| `cref` | Class reference. A structure pointing to the class reference where `klass_or_self`, visibility scope, and refinements are stored. It also stores a pointer to the next class in the hierachy referenced by `rb_cref_struct * next`. The Class reference is lexically scoped. |
+| `cref` | Class reference. A structure pointing to the class reference where `klass_or_self`, visibility scope, and refinements are stored. It also stores a pointer to the next class in the hierarchy referenced by `rb_cref_struct * next`. The Class reference is lexically scoped. |
 | CRuby | Implementation of Ruby written in C |
 | `cvar` | Class Variable. Refers to a Ruby class variable like `@@foo` |
 | `dvar` | Dynamic Variable. Used by the parser to refer to local variables that are defined outside of the current lexical scope. For example `def foo; bar = 1; -> { p bar }; end` the "bar" inside the block is a `dvar` |

doc/globals.rdoc

@@ -307,7 +307,7 @@ The standard error stream (the default value for <tt>$stderr</tt>):
 
   STDERR # => #<IO:<STDERR>>
 
-== Enviroment
+== Environment
 
 === ENV
 

doc/optparse/option_params.rdoc

@@ -437,7 +437,7 @@ Executions:
                                        adipiscing elit. Aenean commodo ligula eget.
                                        Aenean massa. Cum sociis natoque penatibus
                                        et magnis dis parturient montes, nascetur
-                                       ridiculus mus. Donec quam felis, ultricies
+                                       ridiculous mus. Donec quam felis, ultricies
                                        nec, pellentesque eu, pretium quis, sem.
   $ ruby descriptions.rb --xxx
   ["--xxx", true]

doc/optparse/ruby/descriptions.rb

@@ -5,7 +5,7 @@ Lorem ipsum dolor sit amet, consectetuer
 adipiscing elit. Aenean commodo ligula eget.
 Aenean massa. Cum sociis natoque penatibus
 et magnis dis parturient montes, nascetur
-ridiculus mus. Donec quam felis, ultricies
+ridiculous mus. Donec quam felis, ultricies
 nec, pellentesque eu, pretium quis, sem.
 EOT
 descriptions = description.split($/)

doc/optparse/tutorial.rdoc

@@ -570,7 +570,7 @@ Execution:
                                        Aenean massa. Cum sociis natoque penatibus
       -y, --yyy YYY                    Lorem ipsum dolor sit amet, consectetuer.
       -z, --zzz [ZZZ]                  Et magnis dis parturient montes, nascetur
-                                       ridiculus mus. Donec quam felis, ultricies
+                                       ridiculous mus. Donec quam felis, ultricies
                                        nec, pellentesque eu, pretium quis, sem.
 
 The program name is included in the default banner:
@@ -609,7 +609,7 @@ Execution:
                          Aenean massa. Cum sociis natoque penatibus
     -y, --yyy YYY        Lorem ipsum dolor sit amet, consectetuer.
     -z, --zzz [ZZZ]      Et magnis dis parturient montes, nascetur
-                         ridiculus mus. Donec quam felis, ultricies
+                         ridiculous mus. Donec quam felis, ultricies
                          nec, pellentesque eu, pretium quis, sem.
 
 === Top List and Base List

doc/rdoc/markup_reference.rb

@@ -1216,13 +1216,13 @@ require 'rdoc'
 #
 class RDoc::MarkupReference
 
-  # exmaple class
+  # example class
   class DummyClass; end
 
-  # exmaple module
+  # example module
   module DummyModule; end
 
-  # exmaple singleton method
+  # example singleton method
   def self.dummy_singleton_method(foo, bar); end
 
   # example instance method
@@ -1230,12 +1230,12 @@ class RDoc::MarkupReference
 
   alias dummy_instance_alias dummy_instance_method
 
-  # exmaple attribute
+  # example attribute
   attr_accessor :dummy_attribute
 
   alias dummy_attribute_alias dummy_attribute
 
-  # exmaple constant
+  # example constant
   DUMMY_CONSTANT = ''
 
   # :call-seq:

doc/syntax/operators.rdoc

@@ -47,9 +47,9 @@ of the operation.
 === <code>&&</code>, <code>and</code>
 
 Both <code>&&</code>/<code>and</code> operators provide short-circuiting by executing each
-side of the operator, left to right, and stopping at the first occurence of a
+side of the operator, left to right, and stopping at the first occurrence of a
 falsey expression. The expression that defines the result is the last one
-executed, whether it be the final expression, or the first occurence of a falsey
+executed, whether it be the final expression, or the first occurrence of a falsey
 expression.
 
 Some examples: