a simple convenience function

[Paul Pogonyshev <pogonyshev@gmx.net>]

I'm not sure this issue wasn't raised already, but what do
you think about adding this simple function to Emasc?  It
could just sit there for optional binding through `~/.emacs'
by those who like this behaviour.  Or we could make behaviour
of the Home key customizeable.

Quick explanation: in the line

	  some t[>>point<<]ext here

after first evaluation of proposed function we get

	  [>>point<<]some text here

and after second evaluation we get

[>>point<<]	  some text here


Paul


--- indent.el	24 Oct 2004 23:58:43 +0300	1.59
+++ indent.el	14 Nov 2004 23:28:35 +0200	
@@ -329,6 +329,21 @@ line, but does not move past any whitesp
   (if (memq (current-justification) '(center right))
       (skip-chars-forward " \t")))
 
+(defun beginning-of-line-smart (&optional n)
+  "Move to the beginning of the text on this line, or to the beginning of the line.
+More exactly, if the point is already at the beginning of the
+line's text (as defined by `beginning-of-line-text'), it is
+placed at the very beginning of the line.  Otherwise it is moved
+to the text beginning.
+
+With optional argument, different from 1, behave identically to
+`beginning-of-line-text'."
+  (interactive "p")
+  (let ((current-point (point)))
+    (beginning-of-line-text n)
+    (when (= (point) current-point)
+      (beginning-of-line))))
+
 (defvar indent-region-function nil
   "Short cut function to indent region using `indent-according-to-mode'.
 A value of nil means really run `indent-according-to-mode' on each line.")