Alt/Option-click is B2 and Super/Cmd-click is B3, sweeps included, as in plan9port: a one-button trackpad can execute and look

The core decides it at the press (mouse.emulateButton) and keeps it to the
release, whatever keys are let go between. Ctrl-click stays a definition,
and a program tracking the mouse still gets the plain click (Alt as its
meta, Super as nothing). The SDL, macOS and web shells now pass Super; the
macOS and web shells pass Alt on a click too. A terminal's mouse report has
no Super bit, so in a terminal only Alt-click is B2.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/gui/gui.zig b/src/gui/gui.zig
index e8dc99b9..65b3f926 100644
--- a/src/gui/gui.zig
+++ b/src/gui/gui.zig
@@ -4020,7 +4020,7 @@ fn wheelAt(g: *Gui, in: *Input, w: WheelTurn, mc: MouseCell) void {
 const WheelTurn = struct { x: f32 = 0, y: f32 = 0, integer_y: i32 = 0, mods: PointerMods = .{} };
 
 /// The modifiers held with a pointer event, as the core's Mouse carries them.
-const PointerMods = struct { ctrl: bool = false, shift: bool = false, alt: bool = false };
+const PointerMods = struct { ctrl: bool = false, shift: bool = false, alt: bool = false, super: bool = false };
 
 /// The core's Mouse for an SDL press, release or move over cell `mc`.
 fn pointerMouse(button: pardes.Mouse.Button, kind: pardes.Mouse.Kind, mc: MouseCell, mods: PointerMods) pardes.Mouse {
@@ -4035,12 +4035,13 @@ fn pointerMouse(button: pardes.Mouse.Button, kind: pardes.Mouse.Kind, mc: MouseC
         .ctrl = mods.ctrl,
         .shift = mods.shift,
         .alt = mods.alt,
+        .super = mods.super,
     };
 }
 
 fn pointerMods() PointerMods {
     const m = c.SDL_GetModState();
-    return .{ .ctrl = (m & c.SDL_KMOD_CTRL) != 0, .shift = (m & c.SDL_KMOD_SHIFT) != 0, .alt = (m & c.SDL_KMOD_ALT) != 0 };
+    return .{ .ctrl = (m & c.SDL_KMOD_CTRL) != 0, .shift = (m & c.SDL_KMOD_SHIFT) != 0, .alt = (m & c.SDL_KMOD_ALT) != 0, .super = (m & c.SDL_KMOD_GUI) != 0 };
 }
 
 fn mouseCellWithGeometry(g: *const Gui, core: ?*const pardes.Pardes, x: f32, y: f32, geometry: WindowGeometry) ?MouseCell {