more fixes for files that don't end in magiclines: make cut_line() cut

the text of the current line (if any), minus the nonexistent newline,
when we're on the last line of the file, and make sure again that the
file isn't marked as modified if the magicline is deleted and we're
supposed to have one, as it's more consistent that way (a marked cut of
the magicline adds a newline to the cutbuffer, while deleting the
magicline adds nothing)


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3114 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -38,9 +38,10 @@ CVS code -
 	  file help.c; changes to help_init(), help_line_len(), and
 	  do_help() (all moved to help.c). (DLR)
 	- Tweak a few functions to remove the assumption that the file
-	  always ends in a magicline.  Changes to do_cut_till_end(),
-	  open_buffer(), read_file(), write_file(), do_last_line(),
-	  do_alt_speller(), and do_wordlinechar_count(). (DLR)
+	  always ends in a magicline.  Changes to cut_line(),
+	  do_cut_till_end(), open_buffer(), read_file(), write_file(),
+	  do_last_line(), do_alt_speller(), and do_wordlinechar_count().
+	  (DLR)
 	- Tweak a few functions to rely on fileage and filebot instead
 	  of NULL for their checks to detect the top or bottom of the
 	  file.  Changes to cut_line(), cut_to_eol(), do_page_up(),

src/cut.c

@@ -40,14 +40,24 @@ void cutbuffer_reset(void)
 
 /* If we're not on the last line of the file, move all the text of the
  * current line, plus the newline at the end, to the cutbuffer, and set
- * the current place we want to where the line used to start. */
+ * the current place we want to where the line used to start.  If we
+ * are, and the last line of the file isn't blank, move all of the text
+ * of the current line to the cutbuffer, and set the current place we
+ * want to where the now-blank line starts. */
 void cut_line(void)
 {
-    if (openfile->current != openfile->filebot) {
+    size_t data_len = strlen(openfile->current->data);
+
+    assert(openfile->current_x <= data_len);
+
+    if (openfile->current != openfile->filebot)
 	move_to_filestruct(&cutbuffer, &cutbottom, openfile->current, 0,
 		openfile->current->next, 0);
-	openfile->placewewant = xplustabs();
-    }
+    else if (data_len > 0)
+	move_to_filestruct(&cutbuffer, &cutbottom, openfile->current, 0,
+		openfile->current, data_len);
+
+    openfile->placewewant = xplustabs();
 }
 
 #ifndef NANO_SMALL

src/text.c

@@ -96,6 +96,8 @@ void do_delete(void)
 	    openfile->mark_begin_x -= char_buf_len;
 #endif
 	openfile->totsize--;
+
+	set_modified();
     } else if (openfile->current != openfile->filebot) {
 	filestruct *foo = openfile->current->next;
 
@@ -130,14 +132,17 @@ void do_delete(void)
 
 	/* If the NO_NEWLINES flag isn't set, and text has been added to
 	 * the magicline as a result of deleting at the end of the line
-	 * before filebot, add a new magicline. */
+	 * before filebot, add a new magicline.  This effectively leaves
+	 * the text unchanged, so don't mark the file as modified after
+	 * doing this. */
 	if (!ISSET(NO_NEWLINES) && openfile->current ==
 		openfile->filebot && openfile->current->data[0] != '\0')
 	    new_magicline();
+	else
+	    set_modified();
     } else
 	return;
 
-    set_modified();
 
 #ifdef ENABLE_COLOR
     /* If color syntaxes are available and turned on, we need to call