Emulate the ri (reverse index) capability: this allows tmux to at least start

on Sun consoles (TERM=sun or sun-color), even if there appear to still be
problems on some boxes (my Blade 100 is fine but edd's Blade 1000 shows odd
screen corruption).

2 files changed, 2 insertions, 5 deletions

diff --git a/tty-term.c b/tty-term.c
index 22fdcb60..09ff9b1e 100644
--- a/tty-term.c
+++ b/tty-term.c
@@ -378,10 +378,6 @@ tty_term_find(char *name, int fd, const char *overrides, char **cause)
 		xasprintf(cause, "terminal does not support clear");
 		goto error;
 	}
-	if (!tty_term_has(term, TTYC_RI)) {
-		xasprintf(cause, "terminal does not support ri");
-		goto error;
-	}
 	if (!tty_term_has(term, TTYC_CUP)) {
 		xasprintf(cause, "terminal does not support cup");
 		goto error;
diff --git a/tty.c b/tty.c
index f7b3ec03..8855a657 100644
--- a/tty.c
+++ b/tty.c
@@ -711,7 +711,8 @@ tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
 		return;
 
  	if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
-	    !tty_term_has(tty->term, TTYC_CSR)) {
+	    !tty_term_has(tty->term, TTYC_CSR) ||
+	    !tty_term_has(tty->term, TTYC_RI)) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}