Add a new escape sequence to switch between cons25 and xterm.

Just run this to switch to xterm:

	printf '\e[=T'

If you get bored and want to switch back to cons25, run this:

	printf '\e[=1T'

I can now send an email to the lists, asking whether people are
interested in trying the xterm emulator.

1 files changed, 14 insertions, 0 deletions

diff --git a/sys/teken/teken_subr_compat.h b/sys/teken/teken_subr_compat.h
index c642af7..088f378 100644
--- a/sys/teken/teken_subr_compat.h
+++ b/sys/teken/teken_subr_compat.h
@@ -87,6 +87,20 @@ teken_subr_cons25_set_bell_pitch_duration(teken_t *t, unsigned int pitch,
 	    (duration & 0xffff));
 }
 
+static void
+teken_subr_cons25_set_terminal_mode(teken_t *t, unsigned int mode)
+{
+
+	switch (mode) {
+	case 0:	/* Switch terminal to xterm. */
+		t->t_stateflags &= ~TS_CONS25;
+		break;
+	case 1: /* Switch terminal to cons25. */
+		t->t_stateflags |= TS_CONS25;
+		break;
+	}
+}
+
 #if 0
 static void
 teken_subr_vt52_decid(teken_t *t)