Issue #15984: Merge PyUnicode doc from 3.5

Doc/c-api/exceptions.rst

@@ -285,7 +285,7 @@ an error value).
 .. c:function:: int PyErr_WarnEx(PyObject *category, const char *message, Py_ssize_t stack_level)
 
    Issue a warning message.  The *category* argument is a warning category (see
-   below) or *NULL*; the *message* argument is an UTF-8 encoded string.  *stack_level* is a
+   below) or *NULL*; the *message* argument is a UTF-8 encoded string.  *stack_level* is a
    positive number giving a number of stack frames; the warning will be issued from
    the  currently executing line of code in that stack frame.  A *stack_level* of 1
    is the function calling :c:func:`PyErr_WarnEx`, 2 is  the function above that,
@@ -617,7 +617,7 @@ The following functions are used to create and modify Unicode exceptions from C.
 .. c:function:: PyObject* PyUnicodeTranslateError_Create(const Py_UNICODE *object, Py_ssize_t length, Py_ssize_t start, Py_ssize_t end, const char *reason)
 
    Create a :class:`UnicodeTranslateError` object with the attributes *object*,
-   *length*, *start*, *end* and *reason*. *reason* is an UTF-8 encoded string.
+   *length*, *start*, *end* and *reason*. *reason* is a UTF-8 encoded string.
 
 .. c:function:: PyObject* PyUnicodeDecodeError_GetEncoding(PyObject *exc)
                 PyObject* PyUnicodeEncodeError_GetEncoding(PyObject *exc)

Doc/c-api/import.rst

@@ -72,7 +72,7 @@ Importing Modules
 
 .. c:function:: PyObject* PyImport_ImportModuleLevel(const char *name, PyObject *globals, PyObject *locals, PyObject *fromlist, int level)
 
-   Similar to :c:func:`PyImport_ImportModuleLevelObject`, but the name is an
+   Similar to :c:func:`PyImport_ImportModuleLevelObject`, but the name is a
    UTF-8 encoded string instead of a Unicode object.
 
    .. versionchanged:: 3.3

Doc/c-api/method.rst

@@ -49,7 +49,7 @@ Method Objects
 .. index:: object: method
 
 Methods are bound function objects. Methods are always bound to an instance of
-an user-defined class. Unbound methods (methods bound to a class object) are
+a user-defined class. Unbound methods (methods bound to a class object) are
 no longer available.
 
 

Doc/c-api/module.rst

@@ -50,7 +50,7 @@ Module Objects
 
 .. c:function:: PyObject* PyModule_New(const char *name)
 
-   Similar to :c:func:`PyImport_NewObject`, but the name is an UTF-8 encoded
+   Similar to :c:func:`PyImport_NewObject`, but the name is a UTF-8 encoded
    string instead of a Unicode object.
 
 

Doc/c-api/unicode.rst

@@ -423,7 +423,7 @@ APIs:
 
 .. c:function:: PyObject *PyUnicode_FromString(const char *u)
 
-   Create a Unicode object from an UTF-8 encoded null-terminated char buffer
+   Create a Unicode object from a UTF-8 encoded null-terminated char buffer
    *u*.
 
 
@@ -556,14 +556,13 @@ APIs:
 .. c:function:: PyObject* PyUnicode_FromEncodedObject(PyObject *obj, \
                                const char *encoding, const char *errors)
 
-   Coerce an encoded object *obj* to an Unicode object and return a reference with
-   incremented refcount.
+   Decode an encoded object *obj* to a Unicode object.
 
    :class:`bytes`, :class:`bytearray` and other
    :term:`bytes-like objects <bytes-like object>`
    are decoded according to the given *encoding* and using the error handling
    defined by *errors*. Both can be *NULL* to have the interface use the default
-   values (see the next section for details).
+   values (see :ref:`builtincodecs` for details).
 
    All other objects, including Unicode objects, cause a :exc:`TypeError` to be
    set.
@@ -745,8 +744,11 @@ Extension modules can continue using them, as they will not be removed in Python
 
 .. c:function:: PyObject* PyUnicode_FromObject(PyObject *obj)
 
-   Shortcut for ``PyUnicode_FromEncodedObject(obj, NULL, "strict")`` which is used
-   throughout the interpreter whenever coercion to Unicode is needed.
+   Copy an instance of a Unicode subtype to a new true Unicode object if
+   necessary. If *obj* is already a true Unicode object (not a subtype),
+   return the reference with incremented refcount.
+
+   Objects other than Unicode or its subtypes will cause a :exc:`TypeError`.
 
 
 Locale Encoding
@@ -1224,7 +1226,7 @@ These are the UTF-16 codec APIs:
 
    If *Py_UNICODE_WIDE* is defined, a single :c:type:`Py_UNICODE` value may get
    represented as a surrogate pair. If it is not defined, each :c:type:`Py_UNICODE`
-   values is interpreted as an UCS-2 character.
+   values is interpreted as a UCS-2 character.
 
    Return *NULL* if an exception was raised by the codec.