A tag that exactly fills its row stays one row, as acme's does

Tags wrapped one cell early to keep a cell for the caret past a full row,
so a tag that exactly filled its column broke as De / l. acme's frame wraps
a box only when it is wider than what the row has left, and frptofchar
clamps the tick past a full line's end to the frame's edge. Tags now wrap
at their full width; the caret past a full row sits at the tag layer's
edge, and on the pane's last cell in a terminal grid, which has none past
it. Two tiny-screen tests collapse their tags, as the others do, and the 41
goldens that moved were re-recorded by name after the same check: rows
shift back up under the shorter tags and nothing else changes. chordcut's
file-body clicks moved back with them.

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

1 files changed, 5 insertions, 3 deletions

diff --git a/src/draw.zig b/src/draw.zig
index 963d61c1..fb770b60 100644
--- a/src/draw.zig
+++ b/src/draw.zig
@@ -987,9 +987,11 @@ fn joinPaneTag(p: *Pardes, s: *Surface, arena: std.mem.Allocator, pane: *Pane, r
         // The grid's row: the gap cell and the text, as far as the pane.
         joinCells(s, region.rect.x, region.rect.y + @as(u16, @intCast(line)), storage[line * pitch ..][0..pitch], config.GUTTER, region.rect.w, tag_fg);
     }
-    if (temporary.cursor) |cursor| if (cursor.x - TAG_TEXT_INSET < r.w - TAG_TEXT_INSET) {
-        s.cursor = .{ .x = r.x + cursor.x, .y = region.rect.y + cursor.y, .bar = cursor.bar };
-    };
+    // Past a full row's end the layer's caret is at the tag's edge, as
+    // acme's tick is; the grid has no cell there, so it takes the last one.
+    if (temporary.cursor) |cursor| {
+        s.cursor = .{ .x = r.x + @min(cursor.x, r.w - 1), .y = region.rect.y + cursor.y, .bar = cursor.bar };
+    }
 }
 
 /// A notice chip, painted once as a tag layer at the tagline's pitch, and the