Preventing a chain of editing actions from continuing after a discard.

This fixes Savannah bug #47104.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5623 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

+2016-02-10  Benno Schulenberg  <bensberg@justemail.net>
+	* src/text.c (discard_until): Prevent a chain of editing actions from
+	continuing after a discard.  This fixes Savannah bug #47104.
+
 2016-02-09  Benno Schulenberg  <bensberg@justemail.net>
 	* src/files.c (stat_with_alloc, open_buffer, write_file): Check the
 	result of a stat() to avoid referencing unitialized data.  Original

src/text.c

@@ -908,6 +908,9 @@ void discard_until(const undo *thisitem, openfilestruct *thefile)
 	free(dropit);
 	dropit = thefile->undotop;
     }
+
+    /* Prevent a chain of editing actions from continuing. */
+    thefile->last_action = OTHER;
 }
 
 /* Add a new undo struct to the top of the current pile. */