From bc4987d2294c9b9cf641b0f9686392611682cc0e Mon Sep 17 00:00:00 2001 From: Gabriel Schneider Date: Thu, 1 Oct 2026 02:47:36 -0300 Subject: pty/run after a clear answers what the command printed from the clear on, whole; cut only when its start really scrolled away A clear (ED 2, ED 3, a reset) under a running command marked its output lost, so `clear; ls` answered only "exit 0 cut". The output's start is now pinned again at the screen's top after the erase: what the command prints from there is its answer, whole, and a cut is said only when that start leaves the scrollback. Co-Authored-By: Claude Opus 5.5 --- src/ninep/pty.zig | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'src/ninep') diff --git a/src/ninep/pty.zig b/src/ninep/pty.zig index 2245255b..fc8eb570 100644 --- a/src/ninep/pty.zig +++ b/src/ninep/pty.zig @@ -971,13 +971,12 @@ test "a run's answer says cut when its output's start is gone, and reads a bound defer gpa.free(into); sh.put(p, prompt); - // `clear` while it runs erases what it printed before, and the pins then - // span rows that no longer hold it (ED 3 even moves one to the next page - // without calling it garbage), so only the erase itself tells. + // `clear` while it runs: what it printed after is its output, whole; + // what the clear erased was meant to go. var h = sh.send(p, node); sh.put(p, c ++ "before\r\n\x1b[H\x1b[2J\x1b[3Jafter\r\n" ++ d ++ prompt); var got = sh.answered(p, node, h, into); - try testing.expect(std.mem.startsWith(u8, got, "exit 0 cut\n")); + try testing.expectEqualStrings("exit 0\nafter\n", got); // A resize between its start and end reflows the pins with the text. -- cgit v1.3