Fix mouse interactions in terminal.

src/Window.zig

@@ -1424,10 +1424,17 @@ fn onShortcut(
                 // Only a terminal needs us to encode a paste for it. A web
                 // pane has its own clipboard handling, so the key is left
                 // alone rather than swallowed here.
-                if (self.focusedTerminal() == null) return 0;
-                self.paste();
+                const terminal = self.focusedTerminal() orelse return 0;
+                terminal.pasteFrom(.standard);
                 return 1;
             },
+            gdk.KEY_C, gdk.KEY_c => {
+                // With nothing selected the key is declined rather than
+                // swallowed, so a web pane's own copy still works and a
+                // terminal still receives it.
+                const terminal = self.focusedTerminal() orelse return 0;
+                return if (terminal.copySelection(.standard)) 1 else 0;
+            },
             else => {},
         }
     }
@@ -1495,54 +1502,3 @@ fn onShortcut(
 
     return 0;
 }
-
-// -------------------------------------------------------------------------
-// Paste
-//
-// GTK4's clipboard API is asynchronous, so the read completes on a later
-// main loop turn. We resolve the destination tab at completion time rather
-// than capturing it, so closing a tab mid-paste can't leave a dangling
-// pointer.
-
-fn paste(self: *Window) void {
-    const clipboard = self.window.as(gtk.Widget).getClipboard();
-    clipboard.readTextAsync(null, &onPasteReady, self);
-}
-
-fn onPasteReady(
-    source: ?*gobject.Object,
-    result: *gio.AsyncResult,
-    data: ?*anyopaque,
-) callconv(.c) void {
-    const self: *Window = @ptrCast(@alignCast(data.?));
-    const clipboard: *gdk.Clipboard = @ptrCast(@alignCast(source.?));
-
-    var err: ?*glib.Error = null;
-    const text = clipboard.readTextFinish(result, &err) orelse {
-        if (err) |e| {
-            std.log.warn("paste failed: {s}", .{e.f_message orelse "unknown"});
-            e.free();
-        }
-        return;
-    };
-    defer glib.free(text);
-
-    const terminal = self.focusedTerminal() orelse return;
-    const session = terminal.session;
-    // Coerce to a plain slice: encodePaste dispatches on the exact type.
-    const span: []const u8 = std.mem.span(text);
-
-    // Refuse pastes containing control characters that would execute on
-    // arrival (a newline in unbracketed mode runs the command immediately).
-    const opts: vt.input.PasteOptions = .fromTerminal(&session.term);
-    if (!vt.input.isSafePaste(span)) {
-        std.log.warn("refusing unsafe paste", .{});
-        return;
-    }
-
-    const parts = vt.input.encodePaste(span, opts) catch |e| {
-        std.log.warn("paste encode failed: {s}", .{@errorName(e)});
-        return;
-    };
-    for (parts) |part| session.write(part);
-}