Making splice_node() update 'filebot', instead of doing it in

four different places.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5490 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -1,3 +1,7 @@
+2015-12-08  Benno Schulenberg  <bensberg@justemail.net>
+	* src/nano.c (splice_node): Make this function update 'filebot',
+	instead of doing it in four different places.
+
 2015-12-07  Benno Schulenberg  <bensberg@justemail.net>
 	* src/winio.c (edit_draw): Quit the loop when there is no end match.
 	* src/files.c (do_writeout): When --tempfile is given, make ^O not

src/nano.c

@@ -104,6 +104,10 @@ void splice_node(filestruct *afterthis, filestruct *newnode)
     if (afterthis->next != NULL)
 	afterthis->next->prev = newnode;
     afterthis->next = newnode;
+
+    /* Update filebot when inserting a node at the end of file. */
+    if (openfile && openfile->filebot == afterthis)
+	openfile->filebot = newnode;
 }
 
 /* Unlink a node from the rest of the filestruct and delete it. */

src/text.c

@@ -544,8 +544,6 @@ void do_undo(void)
 	free(f->data);
 	f->data = data;
 	splice_node(f, t);
-	if (f == openfile->filebot)
-	    openfile->filebot = t;
 	goto_line_posx(u->lineno, u->begin);
 	break;
     case CUT_EOF:
@@ -678,8 +676,6 @@ void do_redo(void)
 	free(f->data);
 	f->data = data;
 	splice_node(f, shoveline);
-	if (f == openfile->filebot)
-	    openfile->filebot = shoveline;
 	renumber(shoveline);
 	goto_line_posx(u->lineno + 1, u->mark_begin_x);
 	break;
@@ -798,9 +794,6 @@ void do_enter()
     openfile->current_x = extra;
 
     splice_node(openfile->current, newnode);
-
-    if (openfile->current == openfile->filebot)
-	openfile->filebot = newnode;
     openfile->current = newnode;
     renumber(newnode);
 
@@ -2162,9 +2155,7 @@ void do_justify(bool full_justify)
 
 	    assert(break_pos <= line_len);
 
-	    /* Make a new line, and copy the text after where we're
-	     * going to break this line to the beginning of the new
-	     * line. */
+	    /* Insert a new line after the current one. */
 	    splice_node(openfile->current, make_new_node(openfile->current));
 
 	    /* If this paragraph is non-quoted, and autoindent isn't
@@ -2203,11 +2194,6 @@ void do_justify(bool full_justify)
 	    /* Break the current line. */
 	    null_at(&openfile->current->data, break_pos);
 
-	    /* If the current line is the last line of the file, move
-	     * the last line of the file down to the next line. */
-	    if (openfile->filebot == openfile->current)
-		openfile->filebot = openfile->filebot->next;
-
 	    /* Go to the next line. */
 	    par_len--;
 	    openfile->current_y++;