Fix "trailing" whitespace in C docstrings.

and harmonize description of functions that are noops on some OSes.

Author: anntzer

src/_c_internal_utils.c

@@ -183,31 +183,32 @@ static PyMethodDef functions[] = {
      "Check whether the current X11 or Wayland display is valid.\n\n"
      "On Linux, returns True if either $DISPLAY is set and XOpenDisplay(NULL)\n"
      "succeeds, or $WAYLAND_DISPLAY is set and wl_display_connect(NULL)\n"
-     "succeeds.  On other platforms, always returns True."},
+     "succeeds.\n\n"
+     "On other platforms, always returns True."},
     {"Win32_GetCurrentProcessExplicitAppUserModelID",
      (PyCFunction)mpl_GetCurrentProcessExplicitAppUserModelID, METH_NOARGS,
      "Win32_GetCurrentProcessExplicitAppUserModelID()\n--\n\n"
-     "Wrapper for Windows's GetCurrentProcessExplicitAppUserModelID.  On \n"
-     "non-Windows platforms, always returns None."},
+     "Wrapper for Windows's GetCurrentProcessExplicitAppUserModelID.\n\n"
+     "On non-Windows platforms, always returns None."},
     {"Win32_SetCurrentProcessExplicitAppUserModelID",
      (PyCFunction)mpl_SetCurrentProcessExplicitAppUserModelID, METH_O,
      "Win32_SetCurrentProcessExplicitAppUserModelID(appid, /)\n--\n\n"
-     "Wrapper for Windows's SetCurrentProcessExplicitAppUserModelID.  On \n"
-     "non-Windows platforms, a no-op."},
+     "Wrapper for Windows's SetCurrentProcessExplicitAppUserModelID.\n\n"
+     "On non-Windows platforms, does nothing."},
     {"Win32_GetForegroundWindow",
      (PyCFunction)mpl_GetForegroundWindow, METH_NOARGS,
      "Win32_GetForegroundWindow()\n--\n\n"
-     "Wrapper for Windows' GetForegroundWindow.  On non-Windows platforms, \n"
-     "always returns None."},
+     "Wrapper for Windows' GetForegroundWindow.\n\n"
+     "On non-Windows platforms, always returns None."},
     {"Win32_SetForegroundWindow",
      (PyCFunction)mpl_SetForegroundWindow, METH_O,
      "Win32_SetForegroundWindow(hwnd, /)\n--\n\n"
-     "Wrapper for Windows' SetForegroundWindow.  On non-Windows platforms, \n"
-     "a no-op."},
+     "Wrapper for Windows' SetForegroundWindow.\n\n"
+     "On non-Windows platforms, does nothing."},
     {"Win32_SetProcessDpiAwareness_max",
      (PyCFunction)mpl_SetProcessDpiAwareness_max, METH_NOARGS,
      "Win32_SetProcessDpiAwareness_max()\n--\n\n"
-     "Set Windows' process DPI awareness to best option available.\n"
+     "Set Windows' process DPI awareness to best option available.\n\n"
      "On non-Windows platforms, does nothing."},
     {NULL, NULL}};  // sentinel.
 static PyModuleDef util_module = {

src/_path_wrapper.cpp

@@ -697,7 +697,7 @@ const char *Py_convert_to_string__doc__ =
     "--\n\n"
     "Convert *path* to a bytestring.\n"
     "\n"
-    "The first five parameters (up to *sketch*) are interpreted as in \n"
+    "The first five parameters (up to *sketch*) are interpreted as in\n"
     "`.cleanup_path`.  The following ones are detailed below.\n"
     "\n"
     "Parameters\n"
@@ -709,7 +709,7 @@ const char *Py_convert_to_string__doc__ =
     "sketch : tuple of 3 floats, or None\n"
     "precision : int\n"
     "    The precision used to \"%.*f\"-format the values.  Trailing zeros\n"
-    "    and decimal points are always removed.  (precision=-1 is a special \n"
+    "    and decimal points are always removed.  (precision=-1 is a special\n"
     "    case used to implement ttconv-back-compatible conversion.)\n"
     "codes : sequence of 5 bytestrings\n"
     "    The bytes representation of each opcode (MOVETO, LINETO, CURVE3,\n"

src/qhull_wrap.cpp

@@ -309,7 +309,7 @@ static PyMethodDef qhull_methods[] = {
      "Parameters\n"
      "----------\n"
      "x, y : 1d arrays\n"
-     "    The coordinates of the point set, which must consist of at least \n"
+     "    The coordinates of the point set, which must consist of at least\n"
      "    three unique points.\n"
      "\n"
      "Returns\n"