diff options
Diffstat (limited to 'src/ninep/pty.zig')
| -rw-r--r-- | src/ninep/pty.zig | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/ninep/pty.zig b/src/ninep/pty.zig index 046a456a..4009af49 100644 --- a/src/ninep/pty.zig +++ b/src/ninep/pty.zig @@ -28,6 +28,9 @@ fn dimension(word: []const u8) ?u16 { return if (n == 0 or n > winsize_max) null else n; } +/// The fewest rows a winsize write gives a terminal's pty. +pub const pty_rows_min = 2; + /// As the root ctl's `size` (4096 a side). const winsize_max = 4096; const e_winsize_range = std.fmt.comptimePrint("invalid winsize: out of range, 1x1 to {d}x{d}", .{ winsize_max, winsize_max }); @@ -71,7 +74,9 @@ fn verb(p: *Pardes, id: usize, line: []const u8, apply: bool) bool { switch (v) { .winsize => { const cols = dimension(words.next() orelse return false) orelse return false; - const rows = dimension(words.next() orelse return false) orelse return false; + // Two rows at least, as a pane is laid out: a one-row pty + // loses its prompt's input mark and reads busy for ever. + const rows = @max(pty_rows_min, dimension(words.next() orelse return false) orelse return false); if (words.next() != null) return false; if (!apply) return true; p.emit(.{ .resize_pty = .{ .pane = @intCast(id), .cols = cols, .rows = rows } }); |