Text plugin basis with plugin for suggestions/completions. The suggest plugin works for imported global variables, methods, modules and module members. For example typing:

import Blender
from Blender import *
| <- cursor here suggests globals
Blender.Draw.gl| <- cursor here suggests all Draw members starting gl

Currently suggestions are listed in the console when the space is redrawn but will be presented as a menu-style list soon. Also to add are shortcut/activation keys to allow plugins to respond to certain key strokes.

source/blender/python/BPY_interface.c

@@ -1066,6 +1066,7 @@ int BPY_menu_do_python( short menutype, int event )
 	case PYMENU_RENDER:
 	case PYMENU_WIZARDS:
 	case PYMENU_SCRIPTTEMPLATE:
+	case PYMENU_TEXTPLUGIN:
 	case PYMENU_MESHFACEKEY:
 		break;
 

source/blender/python/BPY_menus.c

@@ -106,6 +106,8 @@ static int bpymenu_group_atoi( char *str )
 		return PYMENU_ARMATURE;
 	else if( !strcmp( str, "ScriptTemplate" ) )
 		return PYMENU_SCRIPTTEMPLATE;
+	else if( !strcmp( str, "TextPlugin" ) )
+		return PYMENU_TEXTPLUGIN;
 	else if( !strcmp( str, "MeshFaceKey" ) )
 		return PYMENU_MESHFACEKEY;
 	else if( !strcmp( str, "AddMesh" ) )
@@ -184,6 +186,9 @@ char *BPyMenu_group_itoa( short menugroup )
 	case PYMENU_SCRIPTTEMPLATE:
 		return "ScriptTemplate";
 		break;
+	case PYMENU_TEXTPLUGIN:
+		return "TextPlugin";
+		break;
 	case PYMENU_MESHFACEKEY:
 		return "MeshFaceKey";
 		break;

source/blender/python/BPY_menus.h

@@ -99,6 +99,7 @@ typedef enum {
 	PYMENU_UVCALCULATION,
 	PYMENU_ARMATURE,
 	PYMENU_SCRIPTTEMPLATE,
+	PYMENU_TEXTPLUGIN,
 	PYMENU_HELP,/*Main Help menu items - prob best to leave for 'official' ones*/
 	PYMENU_HELPSYSTEM,/* Resources, troubleshooting, system tools */
 	PYMENU_HELPWEBSITES,/* Help -> Websites submenu */

source/blender/python/api2_2x/Text.c

@@ -34,8 +34,11 @@
 #include "BKE_global.h"
 #include "BKE_main.h"
 #include "BIF_drawtext.h"
+#include "BIF_screen.h"
 #include "BKE_text.h"
+#include "BKE_suggestions.h"
 #include "BLI_blenlib.h"
+#include "DNA_screen_types.h"
 #include "DNA_space_types.h"
 #include "gen_utils.h"
 #include "gen_library.h"
@@ -96,6 +99,7 @@ static PyObject *Text_set( BPy_Text * self, PyObject * args );
 static PyObject *Text_asLines( BPy_Text * self );
 static PyObject *Text_getCursorPos( BPy_Text * self );
 static PyObject *Text_setCursorPos( BPy_Text * self, PyObject * args );
+static PyObject *Text_suggest( BPy_Text * self, PyObject * args );
 
 /*****************************************************************************/
 /* Python BPy_Text methods table:                                            */
@@ -124,6 +128,8 @@ static PyMethodDef BPy_Text_methods[] = {
 	 "() - Return cursor position as (row, col) tuple"},
 	{"setCursorPos", ( PyCFunction ) Text_setCursorPos, METH_VARARGS,
 	 "(row, col) - Set the cursor position to (row, col)"},
+	{"suggest", ( PyCFunction ) Text_suggest, METH_VARARGS,
+	 "(list) - List of tuples of the form (name, type) where type is one of 'm', 'v', 'f' for module, variable and function respectively"},
 	{NULL, NULL, 0, NULL}
 };
 
@@ -511,6 +517,57 @@ static PyObject *Text_setCursorPos( BPy_Text * self, PyObject * args )
 	Py_RETURN_NONE;
 }
 
+static PyObject *Text_suggest( BPy_Text * self, PyObject * args )
+{
+	PyObject *item = NULL;
+	PyObject *list = NULL, *resl = NULL;
+	int list_len, i;
+	char *prefix, *name, type;
+	SpaceText *st;
+
+	if(!self->text)
+		return EXPP_ReturnPyObjError(PyExc_RuntimeError,
+				"This object isn't linked to a Blender Text Object");
+
+	/* Parse args for a list of tuples */
+	if(!PyArg_ParseTuple(args, "O!s", &PyList_Type, &list, &prefix))
+		return EXPP_ReturnPyObjError(PyExc_TypeError,
+				"expected list of tuples followed by a string");
+
+	if (curarea->spacetype != SPACE_TEXT)
+		return EXPP_ReturnPyObjError(PyExc_RuntimeError,
+				"Active space type is not text");
+	
+	st = curarea->spacedata.first;
+	if (!st || !st->text)
+		return EXPP_ReturnPyObjError(PyExc_RuntimeError,
+				"Active text area has no Text object");
+	
+	list_len = PyList_Size(list);
+	clear_suggest_text();
+	
+	for (i = 0; i < list_len; i++) {
+		item = PyList_GetItem(list, i);
+		if (!PyTuple_Check(item) || PyTuple_GET_SIZE(item) != 2)
+			return EXPP_ReturnPyObjError(PyExc_AttributeError,
+					"list must contain only tuples of size 2" );
+
+		name = PyString_AsString(PyTuple_GetItem(item, 0));
+		type = PyString_AsString(PyTuple_GetItem(item, 1))[0];
+
+		if (!strlen(name) || (type!='m' && type!='v' && type!='f'))
+			return EXPP_ReturnPyObjError(PyExc_AttributeError,
+					"layer values must be in the range [1, 20]" );
+
+		add_suggestion(name, type);
+	}
+	update_suggestions(prefix);
+	set_suggest_text(st->text);
+	scrarea_queue_redraw(curarea);
+
+	Py_RETURN_NONE;
+}
+
 /*****************************************************************************/
 /* Function:    Text_compare                                                 */
 /* Description: This is a callback function for the BPy_Text type. It        */

source/blender/python/api2_2x/doc/Text.py

@@ -150,5 +150,15 @@ class Text:
 			cursor.
 		"""
 
+	def suggest(list):
+		"""
+		Set the suggestion list to the given list of tuples. This list *must* be
+		sorted by its first element, name.
+		@type list: list of tuples
+		@param list:  List of pair-tuples of the form (name, type) where name is
+			the suggested name and type is one of 'm' (module or class), 'f'
+			(function or method), 'v' (variable).
+		"""
+
 import id_generics
-Text.__doc__ += id_generics.attributes
+Text.__doc__ += id_generics.attributes