static const char *
make_mode_line_flags (Window wp)
{
if (get_buffer_modified (get_window_bp (wp)) && get_buffer_readonly (get_window_bp (wp)))
return "%*";
else if (get_buffer_modified (get_window_bp (wp)))
return "**";
else if (get_buffer_readonly (get_window_bp (wp)))
return "%%";
return "--";
}
/*
* Save a reverse delta for doing undo.
*/
void
undo_save (int type, Point pt, size_t osize, size_t size)
{
Undo *up;
if (get_buffer_noundo (cur_bp) || undo_nosave)
return;
up = (Undo *) XZALLOC (Undo);
up->type = type;
up->n = pt.n;
up->o = pt.o;
if (!get_buffer_modified (cur_bp))
up->unchanged = true;
if (type == UNDO_REPLACE_BLOCK)
{
Line * lp = get_buffer_pt (cur_bp).p;
size_t n = get_buffer_pt (cur_bp).n;
if (n > pt.n)
do
lp = get_line_prev (lp);
while (--n > pt.n);
else if (n < pt.n)
do
lp = get_line_next (lp);
while (++n < pt.n);
pt.p = lp;
up->block.osize = osize;
up->block.size = size;
up->block.text = copy_text_block (pt, osize);
}
up->next = get_buffer_last_undop (cur_bp);
set_buffer_last_undop (cur_bp, up);
if (!doing_undo)
set_buffer_next_undop (cur_bp, up);
}