Recent and /recent keep PDFs and images as they keep files, and an open file's row is where its dot is now

Only text files were recorded, so a PDF read yesterday was not there to
find again, and an open file's row showed the place it last closed at,
stale by however far it had moved since. A PDF is kept at its page and
reopened there from its row; an image by its path; an open one's row
reads its pane's place at the time of the listing.

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

1 files changed, 23 insertions, 0 deletions

diff --git a/test/pdf.zig b/test/pdf.zig
index 2a18ca3c..fbd580b3 100644
--- a/test/pdf.zig
+++ b/test/pdf.zig
@@ -384,6 +384,29 @@ test "PdfSections on a PDF with no outline says so and opens nothing" {
     }
 }
 
+test "Recent keeps a PDF as it keeps a file: open, then closed at its page" {
+    if (!pdf_enabled or platform == .web) return;
+    const gpa = std.testing.allocator;
+    var tmp = std.testing.tmpDir(.{});
+    defer tmp.cleanup();
+    const fixture = try pdf_impl.makeNoOutlineTestPdf(gpa);
+    defer gpa.free(fixture);
+    try tmp.dir.writeFile(std.testing.io, .{ .sub_path = "plain.pdf", .data = fixture });
+    var dir_buf: [4096]u8 = undefined;
+    const dir = dir_buf[0..try tmp.dir.realPath(std.testing.io, &dir_buf)];
+    var path_buf: [4200]u8 = undefined;
+    const path = try std.fmt.bufPrint(&path_buf, "{s}/plain.pdf", .{dir});
+    const p = try Pardes.init(gpa, .{ .cols = 80, .rows = 28 });
+    defer p.deinit();
+    pardes.look.lookAt(p, p.active, path);
+    p.update(.{ .resize = .{ .cols = 80, .rows = 28 } }); // an update's end announces it
+    var out: std.Io.Writer.Allocating = .init(gpa);
+    defer out.deinit();
+    try panes.Output.recentText(p, &out.writer, true);
+    var want: [4300]u8 = undefined;
+    try std.testing.expect(std.mem.indexOf(u8, out.written(), try std.fmt.bufPrint(&want, "{s}:1:1 open\n", .{path})) != null);
+}
+
 test "a look at a PDF's page past its last is a miss, never the last page" {
     if (!pdf_enabled or platform == .web) return;
     const gpa = std.testing.allocator;