terminal: support click_events=2

src/Surface.zig

@@ -4218,20 +4218,24 @@ fn maybePromptClick(self: *Surface) !bool {
         // Guarded at the start of this function
         .none => unreachable,
 
-        .click_events => {
+        .click_events => |v| {
             // For the event, we always send a left-click press event.
             // This matches what Kitty sends.
+            const key: u8, const y: u32 = switch (v) {
+                .Absolute => .{ 1, pos_vp.y + 1 },
+                .Relative => .{ 2, pos_vp.y - prompt_pin.y + 1 },
+            };
             var data: termio.Message.WriteReq.Small.Array = undefined;
             const resp = try std.fmt.bufPrint(
                 &data,
                 "\x1B[<0;{d};{d}M",
-                .{ pos_vp.x + 1, pos_vp.y + 1 },
+                .{ pos_vp.x + 1, y },
             );
 
             // Not that noisy since this only happens on prompt clicks.
             log.debug(
-                "sending click_events=1 event=ESC{s}",
-                .{resp[1..]},
+                "sending click_events={} event=ESC{s}",
+                .{ key, resp[1..] },
             );
 
             // Ask our IO thread to write the data

src/inspector/widgets/screen.zig

@@ -393,7 +393,7 @@ pub fn semanticPromptTable(
         _ = cimgui.c.ImGui_TableSetColumnIndex(1);
         switch (semantic_prompt.click) {
             .none => cimgui.c.ImGui_TextDisabled("(none)"),
-            .click_events => cimgui.c.ImGui_Text("click_events"),
+            .click_events => |click_events| cimgui.c.ImGui_Text("click_events=%s", @tagName(click_events).ptr),
             .cl => |cl| cimgui.c.ImGui_Text("cl=%s", @tagName(cl).ptr),
         }
     }

src/terminal/Screen.zig

@@ -113,7 +113,7 @@ pub const SemanticPrompt = struct {
 
     pub const SemanticClick = union(enum) {
         none,
-        click_events,
+        click_events: osc.semantic_prompt.ClickEvents,
         cl: osc.semantic_prompt.Click,
     };
 };

src/terminal/Terminal.zig

@@ -1226,10 +1226,8 @@ pub fn semanticPrompt(
                 // within a prompt area to SGR mouse events and defers to the
                 // shell to handle them.
                 if (cmd.readOption(.click_events)) |v| {
-                    if (v) {
-                        screen.semantic_prompt.click = .click_events;
-                        break :click;
-                    }
+                    screen.semantic_prompt.click = .{ .click_events = v } ;
+                    break :click;
                 }
 
                 // If click_events was not set or disabled, fallback to `cl`.

src/terminal/osc/parsers/semantic_prompt.zig

@@ -60,6 +60,16 @@ pub const Command = struct {
     }
 };
 
+// ClickEvents can either be a click_events=1 or click_events=2.
+// The click_events=1 sends a click event with the absolute coordinates
+// of the click.
+// The click_events=2 sends a click event with the coordinates of the click
+// relative to the prompt area.
+// See https://github.com/ghostty-org/ghostty/issues/10865 and
+// https://github.com/kovidgoyal/kitty/issues/9500
+// for further details.
+pub const ClickEvents = enum { Absolute, Relative };
+
 pub const Option = enum {
     aid,
     cl,
@@ -102,7 +112,7 @@ pub const Option = enum {
             .err => []const u8,
             .redraw => Redraw,
             .special_key => bool,
-            .click_events => bool,
+            .click_events => ClickEvents,
             .cmdline => []const u8,
             .cmdline_url => []const u8,
             .exit_code => i32,
@@ -200,7 +210,12 @@ pub const Option = enum {
                     .last
                 else
                     null,
-                .special_key, .click_events => if (value.len == 1) switch (value[0]) {
+                .click_events => if (value.len == 1) switch (value[0]) {
+                    '1' => .Absolute,
+                    '2' => .Relative,
+                    else => null,
+                } else null,
+                .special_key => if (value.len == 1) switch (value[0]) {
                     '0' => false,
                     '1' => true,
                     else => null,