- Change the ddb paging "support" to use a variable (db_lines_per_page) to

  control the number of lines per page rather than a constant.  The variable
  can be examined and changed in ddb as '$lines'.  Setting the variable to
  0 will effectively turn off paging.
- Change db_putchar() to force out pending whitespace before outputting
  newlines and carriage returns so that one can rub out content on the
  current line via '\r     \r' type strings.
- Change the simple pager to rub out the --More-- prompt explicitly when
  the routine exits.
- Add some aliases to the simple pager to make it more compatible with
  more(1): 'e' and 'j' do a single line.  'd' does half a page, and
  'f' does a full page.

MFC after:	1 month
Inspired by:	kris

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/alpha/alpha/db_trace.c b/sys/alpha/alpha/db_trace.c
index 8671ca8..4e76b39 100644
--- a/sys/alpha/alpha/db_trace.c
+++ b/sys/alpha/alpha/db_trace.c
@@ -221,7 +221,7 @@ db_backtrace(struct thread *td, db_addr_t frame, db_addr_t pc, int count)
 	last_ipl = ~0L;
 	tf = NULL;
 	quit = 0;
-	db_setup_paging(db_simple_pager, &quit, DB_LINES_PER_PAGE);
+	db_setup_paging(db_simple_pager, &quit, db_lines_per_page);
 	while (count-- && !quit) {
 		sym = db_search_symbol(pc, DB_STGY_ANY, &diff);
 		if (sym == DB_SYM_NULL)