`@p<terminal>:N` past the terminal's last line is a miss, as in a file

The line-past-end check read only a file pane's lines, so a terminal's
look went nowhere and said nothing. A terminal's lines are its logical
lines, as a +Search of it lists them.

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

2 files changed, 14 insertions, 2 deletions

diff --git a/src/look.zig b/src/look.zig
index 4ee5a638..87dcede3 100644
--- a/src/look.zig
+++ b/src/look.zig
@@ -1379,8 +1379,14 @@ pub fn lookAt(p: *Pardes, id: usize, operand: []const u8) void {
     const found = resolveLookTarget(p, id, txt, &realbuf);
     // A line past the end of an open pane is a miss (the target's line is
     // already clamped, so the one written is asked).
-    if (found == .pane and found.pane.id < MAX_PANES) if (p.panes[found.pane.id]) |shown| if (shown.file) |*f| if (pl.at.line > panes.File.nlines(p.gpa, f))
-        return missedLine(p, id, trimmed, pl.at.line);
+    if (found == .pane and found.pane.id < MAX_PANES) if (p.panes[found.pane.id]) |shown| {
+        // A terminal's lines are its logical lines, as a +Search lists them.
+        const n = if (shown.file) |*f| panes.File.nlines(p.gpa, f) else if (shown.isTerminal())
+            if (edit.paneCursorLines(p, &shown.body)) |ls| ls.len else |_| std.math.maxInt(usize)
+        else
+            std.math.maxInt(usize);
+        if (pl.at.line > n) return missedLine(p, id, trimmed, pl.at.line);
+    };
     // A miss changes nothing, the selection included; a look that stays in
     // this pane starts from a clean one. One that goes to another pane
     // leaves this one's dot alone, as acme's does: only the click's own
diff --git a/src/ninep/ctl.zig b/src/ninep/ctl.zig
index 9bb9c044..58fcdf3a 100644
--- a/src/ninep/ctl.zig
+++ b/src/ninep/ctl.zig
@@ -2134,4 +2134,10 @@ test "@p<terminal>:<address> takes any address over the terminal's lines, select
     try testing.expectEqual(@as(i32, 1), pane.body.cur_col);
     _ = wr(p, root, try std.fmt.bufPrint(&line, "@p{d}:/zzqq/\n", .{serial}));
     try testing.expect(th.logHas(p, "look: no match for regexp"));
+    // A line past its last is a miss, as in a file.
+    const row_before = pane.body.cur_row;
+    _ = wr(p, root, try std.fmt.bufPrint(&line, "@p{d}:999\n", .{serial}));
+    try testing.expect(th.logHas(p, "has no line 999"));
+    try testing.expectEqual(row_before, pane.body.cur_row);
+    try testing.expectEqualStrings("", rd(p, root, 0, 64).bytes);
 }