[hackers] [st][PATCH] csi: check for private marker in 'S' case

[Tim Culverhouse]

The handler for 'S' final character does not check for a private
marker. This can cause a conflict with a sequence called 'XTSMGRAPHICS'
which also has an 'S' final character, but uses the private marker '?'.
Without checking for a private marker, st will perform a scroll up
operation when XTSMGRAPHICS is seen, which can cause unexpected display
artifacts.
---
 st.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/st.c b/st.c
index d6478f55a249..034954d0aa83 100644
--- a/st.c
+++ b/st.c
@@ -1728,6 +1728,7 @@ csihandle(void)
                }
                break;
        case 'S': /* SU -- Scroll <n> line up */
+               if (csiescseq.priv) break;
                DEFAULT(csiescseq.arg[0], 1);
                tscrollup(term.top, csiescseq.arg[0]);
                break;
-- 
2.43.2