From ddd3363a428bad302f517fe5d433ce61b2b8de6c Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Wed, 2 Oct 2019 04:07:10 +0200
Subject: [PATCH] [release-0.4] patch_terminfo_bugs: TERM=xterm with non-xterm:
 ignore smglr (#11132)

"smglr" was added for TERM=xterm recently to the terminfo database,
which causes display issues with terminals that use `TERM=xterm` by
default for themselves, although not supporting it.

This patch makes "smglr" to be ignored then.

Fixes https://github.com/neovim/neovim/issues/10562
---
 src/nvim/tui/tui.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/nvim/tui/tui.c b/src/nvim/tui/tui.c
index 791756e5c52..c0845f9524e 100644
--- a/src/nvim/tui/tui.c
+++ b/src/nvim/tui/tui.c
@@ -93,7 +93,7 @@ typedef struct {
   int out_fd;
   bool scroll_region_is_full_screen;
   bool can_change_scroll_region;
-  bool can_set_lr_margin;
+  bool can_set_lr_margin;  // smglr
   bool can_set_left_right_margin;
   bool can_scroll;
   bool can_erase_chars;
@@ -1598,6 +1598,12 @@ static void patch_terminfo_bugs(TUIData *data, const char *term,
       unibi_set_if_empty(ut, unibi_set_lr_margin, "\x1b[%i%p1%d;%p2%ds");
       unibi_set_if_empty(ut, unibi_set_left_margin_parm, "\x1b[%i%p1%ds");
       unibi_set_if_empty(ut, unibi_set_right_margin_parm, "\x1b[%i;%p2%ds");
+    } else {
+      // Fix things advertised via TERM=xterm, for non-xterm.
+      if (unibi_get_str(ut, unibi_set_lr_margin)) {
+        ILOG("Disabling smglr with TERM=xterm for non-xterm.");
+        unibi_set_str(ut, unibi_set_lr_margin, NULL);
+      }
     }
 
 #ifdef WIN32