Handling the cases of cutting-from-cursor-to-end-of-line

(that is, when CUT_TO_END is set) properly.
Patch by Mark Majeres.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5054 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

+2014-07-02  Mark Majeres  <mark@engine12.com>
+	* src/text.c (undo_cut, redo_cut, update_undo): Handle the
+	cases of cutting-from-cursor-to-end-of-line properly.
+	* src/nano.c (do_input): Don't preserve the cutbuffer when
+	CUT_TO_END is toggled -- it would intermix two cut types.
+
 2014-07-02  Benno Schulenberg  <bensberg@justemail.net>
 	* src/proto.h: Add a typedef for a pointer to a function.
 	* src/global.c (func_from_key): New wrapper.

src/nano.c

@@ -1707,7 +1707,8 @@ int do_input(bool allow_funcs)
 #ifndef NANO_TINY
 		    if (s->scfunc == do_toggle_void) {
 			do_toggle(s->toggle);
-			preserve = TRUE;
+			if (s->toggle != CUT_TO_END)
+			    preserve = TRUE;
 		    } else
 #endif
 		    {

src/nano.h

@@ -572,7 +572,7 @@ enum
 /* Extra bits for the undo function. */
 #define UNdel_del		(1<<0)
 #define UNdel_backspace		(1<<1)
-#define UNcut_marked_backwards	(1<<2)
+#define UNcut_marked_forward	(1<<2)
 #define UNcut_cutline		(1<<3)
 #endif /* !NANO_TINY */
 

src/text.c

@@ -388,7 +388,7 @@ void undo_cut(undo *u)
 
     copy_from_filestruct(u->cutbuffer);
 
-    if (u->xflags == UNcut_cutline || u->xflags == UNcut_marked_backwards || u->type == CUT_EOF)
+    if (u->xflags != UNcut_marked_forward && u->type != PASTE)
 	goto_line_posx(u->mark_begin_lineno, u->mark_begin_x);
 }
 
@@ -406,11 +406,11 @@ void redo_cut(undo *u)
 	openfile->placewewant = xplustabs();
     }
 
-    openfile->mark_set = ISSET(CUT_TO_END) ? u->mark_set : TRUE;
+    openfile->mark_set = TRUE;
     openfile->mark_begin = fsfromline(u->mark_begin_lineno);
     openfile->mark_begin_x = (u->xflags == UNcut_cutline) ? 0 : u->mark_begin_x;
 
-    do_cut_text(FALSE, u->type == CUT_EOF, TRUE);
+    do_cut_text(FALSE, FALSE, TRUE);
 
     openfile->mark_set = FALSE;
     openfile->mark_begin = NULL;
@@ -1060,15 +1060,19 @@ void update_undo(undo_type action)
 		ssize_t line = u->lineno;
 		u->lineno = u->mark_begin_lineno;
 		u->mark_begin_lineno = line;
-		u->xflags = UNcut_marked_backwards;
-	    }
-	} else if (!ISSET(CUT_TO_END)) {
+	    } else
+		u->xflags = UNcut_marked_forward;
+	} else {
 	    /* Compute cutbottom for the uncut using our copy. */
 	    u->cutbottom = u->cutbuffer;
 	    while (u->cutbottom->next != NULL)
 		u->cutbottom = u->cutbottom->next;
-	    if (u->type != CUT_EOF)
-		u->lineno++;
+	    u->lineno = u->mark_begin_lineno + u->cutbottom->lineno - u->cutbuffer->lineno;
+	    if (ISSET(CUT_TO_END) || u->type == CUT_EOF) {
+		u->begin = strlen(u->cutbottom->data);
+		if(u->lineno == u->mark_begin_lineno)
+		u->begin += u->mark_begin_x;
+	    }
 	}
 	break;
     case REPLACE: