csi: check for private marker in 'S' case

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.
This commit is contained in:
Tim Culverhouse 2024-02-18 06:56:49 -06:00 committed by Hiltjo Posthuma
parent 9846a56bd7
commit a3f7420310

1
st.c
View file

@ -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;