Q records keys into a register and q types them again; . repeats the last insert

Macro.zig keeps keys to be typed again. Q records into @ (or "<reg>) in
helix's key notation until the next Q; q replays a register's keys count
times through the modal handling, where Esc does not hop panes and Enter,
Tab and Space neither look, execute nor open the leader. . replays the
normal command that entered the last insert session once and what was typed
in it count times (helix repeat_last_insert). a at the end of the text now
adds the newline helix's append_mode does, which a terminal's text does not.
helix-golf's invert_dictionary passes.

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

1 files changed, 13 insertions, 2 deletions

diff --git a/src/edit.zig b/src/edit.zig
index 3e12f169..a373741c 100644
--- a/src/edit.zig
+++ b/src/edit.zig
@@ -546,8 +546,19 @@ pub fn enterInsert(p: *Pardes, t: *Text, where: InsertAt, cnt: usize) void {
             const hi_row = if (b) |bb| bb.hi_row else t.cur_row;
             const hi_col = if (b) |bb| bb.hi_col else t.cur_col;
             t.restore_cursor = true;
-            const gap = modal.nextGrapheme(text, modal.offsetAt(text, .{ .row = @intCast(@max(0, hi_row)), .col = @intCast(@max(0, hi_col)) }));
-            const gc = modal.positionAt(text, gap);
+            const hi = modal.offsetAt(text, .{ .row = @intCast(@max(0, hi_row)), .col = @intCast(@max(0, hi_col)) });
+            const gap = modal.nextGrapheme(text, hi);
+            // helix append_mode: a range that reaches the end of the text
+            // gets a newline after it to append before (a terminal's text
+            // is not the editor's to grow)
+            const terminal = t.what == .body and if (t.pane()) |pane| pane.isTerminal() else false;
+            var now = text;
+            if (hi < text.len and gap >= text.len and !terminal) {
+                const grown = std.mem.concat(p.gpa, u8, &.{ text, "\n" }) catch return;
+                setEditText(p, t, grown);
+                now = grown; // what setEditText keeps; `text` may be gone
+            }
+            const gc = modal.positionAt(now, gap);
             t.cur_row = @intCast(gc.row);
             t.cur_col = @intCast(gc.col);
             // helix append_mode: the range reaches one past its end, which