Make formatting of some return codes conforming to the general style. (#5587)

3 files changed, 13 insertions, 13 deletions

diff --git a/Doc/c-api/init.rst b/Doc/c-api/init.rst
index bae49d5ba8..f2564c4414 100644
--- a/Doc/c-api/init.rst
+++ b/Doc/c-api/init.rst
@@ -273,8 +273,8 @@ Initializing and finalizing the interpreter
    the last call to :c:func:`Py_Initialize`.  Ideally, this frees all memory
    allocated by the Python interpreter.  This is a no-op when called for a second
    time (without calling :c:func:`Py_Initialize` again first).  Normally the
-   return value is 0.  If there were errors during finalization
-   (flushing buffered data), -1 is returned.
+   return value is ``0``.  If there were errors during finalization
+   (flushing buffered data), ``-1`` is returned.
 
    This function is provided for a number of reasons.  An embedding application
    might want to restart Python without having to restart the application itself.
@@ -1018,7 +1018,7 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
 .. c:function:: PY_INT64_T PyInterpreterState_GetID(PyInterpreterState *interp)
 
    Return the interpreter's unique ID.  If there was any error in doing
-   so then -1 is returned and an error is set.
+   so then ``-1`` is returned and an error is set.
 
    .. versionadded:: 3.7
 
diff --git a/Doc/c-api/long.rst b/Doc/c-api/long.rst
index 4f16b578eb..5b1f386fb7 100644
--- a/Doc/c-api/long.rst
+++ b/Doc/c-api/long.rst
@@ -137,7 +137,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Raise :exc:`OverflowError` if the value of *obj* is out of range for a
    :c:type:`long`.
 
-   Returns -1 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
 
 .. c:function:: long PyLong_AsLongAndOverflow(PyObject *obj, int *overflow)
@@ -151,7 +151,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    return ``-1``; otherwise, set *\*overflow* to ``0``.  If any other exception
    occurs set *\*overflow* to ``0`` and return ``-1`` as usual.
 
-   Returns -1 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
 
 .. c:function:: long long PyLong_AsLongLong(PyObject *obj)
@@ -166,7 +166,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Raise :exc:`OverflowError` if the value of *obj* is out of range for a
    :c:type:`long`.
 
-   Returns -1 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
 
 .. c:function:: long long PyLong_AsLongLongAndOverflow(PyObject *obj, int *overflow)
@@ -180,7 +180,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    and return ``-1``; otherwise, set *\*overflow* to ``0``.  If any other
    exception occurs set *\*overflow* to ``0`` and return ``-1`` as usual.
 
-   Returns -1 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
    .. versionadded:: 3.2
 
@@ -197,7 +197,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Raise :exc:`OverflowError` if the value of *pylong* is out of range for a
    :c:type:`Py_ssize_t`.
 
-   Returns -1 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
 
 .. c:function:: unsigned long PyLong_AsUnsignedLong(PyObject *pylong)
@@ -259,7 +259,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    If the value of *obj* is out of range for an :c:type:`unsigned long`,
    return the reduction of that value modulo ``ULONG_MAX + 1``.
 
-   Returns -1 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
 
 .. c:function:: unsigned long long PyLong_AsUnsignedLongLongMask(PyObject *obj)
@@ -271,7 +271,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    If the value of *obj* is out of range for an :c:type:`unsigned long long`,
    return the reduction of that value modulo ``PY_ULLONG_MAX + 1``.
 
-   Returns -1 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
 
 .. c:function:: double PyLong_AsDouble(PyObject *pylong)
@@ -282,7 +282,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Raise :exc:`OverflowError` if the value of *pylong* is out of range for a
    :c:type:`double`.
 
-   Returns -1.0 on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns ``-1.0`` on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
 
 .. c:function:: void* PyLong_AsVoidPtr(PyObject *pylong)
@@ -292,4 +292,4 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    is only assured to produce a usable :c:type:`void` pointer for values created
    with :c:func:`PyLong_FromVoidPtr`.
 
-   Returns NULL on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
+   Returns *NULL* on error.  Use :c:func:`PyErr_Occurred` to disambiguate.
diff --git a/Doc/c-api/memory.rst b/Doc/c-api/memory.rst
index 2af0c46d45..73ae6db498 100644
--- a/Doc/c-api/memory.rst
+++ b/Doc/c-api/memory.rst
@@ -530,7 +530,7 @@ tracemalloc C API
 
    Track an allocated memory block in the :mod:`tracemalloc` module.
 
-   Return 0 on success, return ``-1`` on error (failed to allocate memory to
+   Return ``0`` on success, return ``-1`` on error (failed to allocate memory to
    store the trace). Return ``-2`` if tracemalloc is disabled.
 
    If memory block is already tracked, update the existing trace.