From c0ecb53194c5835bf355e5ddfc17524bd477e476 Mon Sep 17 00:00:00 2001
From: Barry Warsaw <barry@python.org>
Date: Tue, 20 Jan 1998 21:43:34 +0000
Subject: (py-master-file): New buffer-local variable which can be set in the
 file local variable section of a file.  When set, and the user hits C-c C-c,
 this file gets executed instead of the buffer's file.  Idea given by Roy
 Dragseth <royd@math.uit.no>, but implemented differently.

(py-execute-buffer): Support py-master-file variable.  If this names a
relative path, default-directory is prepended via expand-file-name.
---
 Misc/python-mode.el | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/Misc/python-mode.el b/Misc/python-mode.el
index bc7e53f..4dd1de6 100644
--- a/Misc/python-mode.el
+++ b/Misc/python-mode.el
@@ -279,6 +279,22 @@ source code of the innermost frame.")
   :type 'function
   :group 'python)
 
+;; Not customizable
+(defvar py-master-file nil
+  "If non-nil, execute the named file instead of the buffer's file.
+The intent is to allow someone to set this variable file local
+variable section, e.g.:
+
+    # Local Variables:
+    # py-master-file: \"master.py\"
+    # End:
+
+so that hitting \\[py-execute-buffer] in that buffer executes the
+named master file instead of the buffer's file.  Note that if the file
+name has a relative path, the `default-directory' for the file is
+prepended to come up with a buffer name.")
+(make-variable-buffer-local 'py-master-file)
+
 
 
 ;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -1205,12 +1221,20 @@ is inserted at the end.  See also the command `py-clear-queue'."
 ;; Code execution command
 (defun py-execute-buffer (&optional async)
   "Send the contents of the buffer to a Python interpreter.
+If the file local variable `py-master-file' is non-nil, execute the
+named file instead of the buffer's file.
+
 If there is a *Python* process buffer it is used.  If a clipping
 restriction is in effect, only the accessible portion of the buffer is
 sent.  A trailing newline will be supplied if needed.
 
 See the `\\[py-execute-region]' docs for an account of some subtleties."
   (interactive "P")
+  (if py-master-file
+      (let* ((filename (expand-file-name py-master-file))
+	     (buffer (or (get-file-buffer filename)
+			 (find-file-noselect filename))))
+	(set-buffer buffer)))
   (py-execute-region (point-min) (point-max) async))
 
 
-- 
cgit v0.12

