🚀 go-pugleaf

  All of the functions defined in casefiddle.c mark a buffer changed,
even after doing a case change on a region of length 0 (i.e. not doing
any changes at all).

  The solution to this is to modify the function casify_region() so
that it returns without marking the buffer modified, if the beginning
and end buffer positions are equal.  A patch is appended to the end of
this message.

Jonathan Kamens			              USnail:
MIT Project Athena				11 Ashford Terrace
jik@Athena.MIT.EDU				Allston, MA  02134
Office: 617-253-8495			      Home: 617-782-0710

*** /tmp/,RCSt1020127	Mon Feb 19 14:37:39 1990
--- casefiddle.c	Mon Feb 19 14:30:08 1990
***************
*** 110,115 ****
--- 110,119 ----
    prepare_to_modify_buffer ();
    record_change (XFASTINT (b), XFASTINT (e) - XFASTINT (b));
  
+   if (EQ (b, e))
+     /* Not modifying because nothing marked */
+     return (0);
+   
    for (i = XFASTINT (b); i < XFASTINT (e); i++)
      {
        c = CharAt (i);