From f731ae4a2dc6aca565b20dffd6ddf661e585cbb5 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 18 Apr 2017 21:41:42 +0000
Subject: [PATCH] Revert use of DECSLRM on iTerm2, it doesn't help as much as
 we throught, and there are some question marks about it's support.

---
 tmux.h     |  4 +---
 tty-keys.c | 44 --------------------------------------------
 tty.c      |  4 ++--
 3 files changed, 3 insertions(+), 49 deletions(-)

diff --git a/tmux.h b/tmux.h
index 8933d356..3387798f 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1071,7 +1071,6 @@ struct tty {
 		TTY_VT220,
 		TTY_VT320,
 		TTY_VT420,
-		TTY_ITERM2,
 		TTY_UNKNOWN
 	} term_type;
 
@@ -1086,8 +1085,7 @@ struct tty {
 	struct tty_key	*key_tree;
 };
 #define TTY_TYPES \
-	{ "VT100", "VT101", "VT102", "VT220", "VT320", "VT420", "iTerm2", \
-	  "Unknown" }
+	{ "VT100", "VT101", "VT102", "VT220", "VT320", "VT420", "Unknown" }
 
 /* TTY command context. */
 struct tty_ctx {
diff --git a/tty-keys.c b/tty-keys.c
index 9cd61e19..a011fcab 100644
--- a/tty-keys.c
+++ b/tty-keys.c
@@ -46,8 +46,6 @@ static void	tty_keys_callback(int, short, void *);
 static int	tty_keys_mouse(struct tty *, const char *, size_t, size_t *);
 static int	tty_keys_device_attributes(struct tty *, const char *, size_t,
 		    size_t *);
-static int	tty_keys_iterm2_version(struct tty *, const char *, size_t,
-		    size_t *);
 
 /* Default raw keys. */
 struct tty_default_key_raw {
@@ -555,17 +553,6 @@ tty_keys_next(struct tty *tty)
 		goto partial_key;
 	}
 
-	/* Or a response from iTerm2? */
-	switch (tty_keys_iterm2_version(tty, buf, len, &size)) {
-	case 0:		/* yes */
-		key = KEYC_UNKNOWN;
-		goto complete_key;
-	case -1:	/* no, or not valid */
-		break;
-	case 1:		/* partial */
-		goto partial_key;
-	}
-
 	/* Is this a mouse key press? */
 	switch (tty_keys_mouse(tty, buf, len, &size)) {
 	case 0:		/* yes */
@@ -925,34 +912,3 @@ tty_keys_device_attributes(struct tty *tty, const char *buf, size_t len,
 	    types[type]);
 	return (0);
 }
-
-/*
- * Handle a version response from iTerm2. Returns 0 for success, -1 for
- * failure, 1 for partial.
- */
-static int
-tty_keys_iterm2_version(struct tty *tty, const char *buf, size_t len,
-    size_t *size)
-{
-	struct client	*c = tty->client;
-	u_int		 i;
-
-	*size = 0;
-
-	if (memcmp("\033[ITERM2 ", buf, (len > 9) ? 9 : len) != 0)
-		return (-1);
-	if (len < 10)
-		return (1);
-	for (i = 9; i < len; i++) {
-		if (buf[i] == 'n')
-			break;
-	}
-	if (i == len)
-		return (1);
-	*size = i + 1;
-
-	tty_set_type(tty, TTY_ITERM2);
-
-	log_debug("%s: this is iTerm2", c->name);
-	return (0);
-}
diff --git a/tty.c b/tty.c
index 82fcbeba..73aeb91f 100644
--- a/tty.c
+++ b/tty.c
@@ -74,7 +74,7 @@ static void	tty_default_attributes(struct tty *, const struct window_pane *,
 #define tty_use_acs(tty) \
 	(tty_term_has((tty)->term, TTYC_ACSC) && !((tty)->flags & TTY_UTF8))
 #define tty_use_margin(tty) \
-	((tty)->term_type == TTY_VT420 || (tty)->term_type == TTY_ITERM2)
+	((tty)->term_type == TTY_VT420)
 
 #define tty_pane_full_width(tty, ctx) \
 	((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
@@ -251,7 +251,7 @@ tty_start_tty(struct tty *tty)
 			tty->flags |= TTY_FOCUS;
 			tty_puts(tty, "\033[?1004h");
 		}
-		tty_puts(tty, "\033[c\033[1337n");
+		tty_puts(tty, "\033[c");
 	}
 
 	tty->flags |= TTY_STARTED;