Insert on a terminal's text says it edits a copy, run with Tab or B2, that the program's next drawing replaces, and that Ctrl-b types to the program

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

1 files changed, 12 insertions, 0 deletions

diff --git a/src/edit.zig b/src/edit.zig
index bf65935e..b2909d87 100644
--- a/src/edit.zig
+++ b/src/edit.zig
@@ -2166,6 +2166,18 @@ test "Enter in insert mode keeps a tab-indented line's tabs, as o and O do" {
     try std.testing.expect(std.mem.startsWith(u8, pane.file.?.content, "\t\tvalue = 1;\n\t\t\n"));
 }
 
+test "insert on a terminal's text says it edits a copy the program's next drawing replaces" {
+    const p = try Pardes.init(std.testing.allocator, .{ .tty_only = true });
+    defer p.deinit();
+    while (p.nextEffect()) |_| {}
+    const pane = p.panes[0].?;
+    if (!pane.isTerminal()) return error.SkipZigTest;
+    pane.body.mode = .normal;
+    p.update(.{ .key = .{ .cp = 'i' } });
+    p.update(.{ .key = .{ .cp = 'x', .text = "x" } });
+    try std.testing.expect(std.mem.indexOf(u8, pane.msg[0..pane.msg_len], "a copy of the terminal's text") != null);
+}
+
 test "insert and normal modes edit complete Unicode graphemes" {
     const gpa = std.testing.allocator;
     const p = try Pardes.init(gpa, .{ .cols = 60, .rows = 12 });