3 files changed, 19 insertions, 0 deletions
diff --git a/src/gui.zig b/src/gui.zig
index a53dfa24..b952da99 100644
--- a/src/gui.zig
+++ b/src/gui.zig
@@ -34,6 +34,7 @@ extern "c" fn forkpty(amaster: *c_int, name: ?[*:0]u8, termp: ?*const anyopaque,
 extern "c" fn execv(path: [*:0]const u8, argv: [*:null]const ?[*:0]const u8) c_int;
 extern "c" fn chdir(path: [*:0]const u8) c_int;
 extern "c" fn _exit(status: c_int) noreturn;
+extern "c" fn setenv(name: [*:0]const u8, value: [*:0]const u8, overwrite: c_int) c_int;
 extern "c" fn emscripten_get_element_css_size(target: [*:0]const u8, width: *f64, height: *f64) c_int;
 const EMSCRIPTEN_RESULT_SUCCESS: c_int = 0;
 
@@ -680,6 +681,9 @@ fn runNative(init: std.process.Init, opts_in: pardes.Options) !void {
 
     // shells emit OSC 133 prompt marks via this rc (prompt hiding, click-move)
     writeFile(pardes.bash_rc);
+    // macos: apple's bash 3.2 prints the zsh-deprecation banner into every
+    // pane unless this is in the env BEFORE bash starts (the rc is too late)
+    if (comptime builtin.os.tag.isDarwin()) _ = setenv("BASH_SILENCE_DEPRECATION_WARNING", "1", 1);
 
     var ptys: [pardes.MAX_PANES]?Pty = @splat(null);
     // per-slot spawn generation: drops a dead shell's late output/eof when its
@@ -976,6 +980,9 @@ fn runGrid(init: std.process.Init, opts_in: pardes.Options) !void {
         core.update(.{ .resize = .{ .cols = grid_cols, .rows = grid_rows } });
 
     writeFile(pardes.bash_rc);
+    // macos: apple's bash 3.2 prints the zsh-deprecation banner into every
+    // pane unless this is in the env BEFORE bash starts (the rc is too late)
+    if (comptime builtin.os.tag.isDarwin()) _ = setenv("BASH_SILENCE_DEPRECATION_WARNING", "1", 1);
 
     var ptys: [pardes.MAX_PANES]?Pty = @splat(null);
     // per-slot spawn generation: drops a dead shell's late output/eof when its
diff --git a/src/main.zig b/src/main.zig
index 2e75de3d..47121691 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -18,6 +18,14 @@ pub const std_options_debug_io: std.Io = if (is_emscripten)
 else
     std_options_debug_threaded_io.?.io();
 
+// ghostty-vt's stream logs every mode it doesn't implement, and in the tty
+// shell stderr IS the screen — the warning scribbles over the grid. macOS
+// bash/readline sends one such mode (1034, meta-key) on every startup, so
+// keep the stream scope to errors; linux shells just never tripped it.
+pub const std_options: std.Options = .{
+    .log_scope_levels = &.{.{ .scope = .stream, .level = .err }},
+};
+
 // A panic must restore the terminal (cooked mode, main screen, mouse off)
 // before the trace prints, or it lands garbled in a raw alt screen. recover()
 // no-ops unless the vaxis tty is live, so gui/tty share the handler.
diff --git a/src/tty.zig b/src/tty.zig
index 1342ef6f..3ff714bf 100644
--- a/src/tty.zig
+++ b/src/tty.zig
@@ -15,6 +15,7 @@ extern "c" fn forkpty(amaster: *c_int, name: ?[*:0]u8, termp: ?*const anyopaque,
 extern "c" fn execv(path: [*:0]const u8, argv: [*:null]const ?[*:0]const u8) c_int;
 extern "c" fn chdir(path: [*:0]const u8) c_int;
 extern "c" fn _exit(status: c_int) noreturn;
+extern "c" fn setenv(name: [*:0]const u8, value: [*:0]const u8, overwrite: c_int) c_int;
 
 // absolute shell path per OS: execv must not search PATH (no allocation
 // between fork and exec)
@@ -91,6 +92,9 @@ pub fn run(init: std.process.Init, opts: pardes.Options) !void {
 
     // shells emit OSC 133 prompt marks via this rc (prompt hiding, click-move)
     writeFile(pardes.bash_rc);
+    // macos: apple's bash 3.2 prints the zsh-deprecation banner into every
+    // pane unless this is in the env BEFORE bash starts (the rc is too late)
+    if (comptime builtin.os.tag.isDarwin()) _ = setenv("BASH_SILENCE_DEPRECATION_WARNING", "1", 1);
 
     var kitty_handles: [pardes.MAX_PANES]?vaxis.Image = @splat(null);
     var ptys: [pardes.MAX_PANES]?Pty = @splat(null);