Recent lists the files opened lately, closed ones too, and a jump back to a closed file reopens it

A file closed by accident, its path forgotten, could not be found again:
the jumplist dropped closed panes. Every file opened (a look, a Save of a
scratch, a Restore, a rename) goes first in a list of 200, kept once, its
dot noted when it closes, kept across sessions in $XDG_STATE_HOME/pardes/
recent. `Recent` (SPC f r) shows it in a reused +Recent, each row
`path:line:col open|closed` a look reopens; /recent reads `open|closed
<path>`. The jumplist keeps a closed file's entries, +Jumps marks them
`(closed)`, and Back to one opens the file at its place. acme has no
such thing; its dump and Load are the nearest.

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

1 files changed, 49 insertions, 0 deletions

diff --git a/src/Output.zig b/src/Output.zig
index 37d25168..dd6ab92a 100644
--- a/src/Output.zig
+++ b/src/Output.zig
@@ -505,6 +505,12 @@ pub fn openJumps(p: *Pardes, id: usize) !void {
     var out: std.Io.Writer.Allocating = .init(p.gpa);
     errdefer out.deinit();
     for (p.jumps[0..p.njumps]) |j| {
+        // A closed file's entry: marked, and a look at it opens it again.
+        if (j.serial == 0) {
+            const e = p.recentByHash(j.path_hash) orelse continue;
+            try out.writer.print("{s}:{d}:{d} (closed)\n", .{ e.path, @max(1, j.line), @max(1, j.col) });
+            continue;
+        }
         const jp = p.panes[j.pane] orelse continue;
         var idbuf: [16]u8 = undefined;
         const pdf_path: ?[]const u8 = if (comptime pardes.pdf_enabled) jp.pdfPath() else null;
@@ -532,6 +538,49 @@ pub fn openJumps(p: *Pardes, id: usize) !void {
     try openStepped(p, id, .{ .cmd = .Jumplist }, content);
 }
 
+/// The recent list as rows: `<path>:<line>:<col> open|closed`, most recent
+/// first; a look at a row opens the file there, as a +Jumps row does.
+pub fn recentText(p: *Pardes, w: *std.Io.Writer, look_rows: bool) !void {
+    for (p.recent.entries.items) |e| {
+        var is_open = false;
+        for (p.panes) |slot| if (slot) |pane| if (pane.file) |f| if (f.output == null and std.mem.eql(u8, f.path, e.path)) {
+            is_open = true;
+        };
+        const state: []const u8 = if (is_open) "open" else "closed";
+        if (!look_rows)
+            try w.print("{s} {s}\n", .{ state, e.path })
+        else if (e.line == 0)
+            try w.print("{s} {s}\n", .{ e.path, state })
+        else
+            try w.print("{s}:{d}:{d} {s}\n", .{ e.path, e.line, e.col, state });
+    }
+}
+
+/// Recent: the one +Recent, filled again when it is there (as Find and
+/// Grep's +Search is), else opened below the asking pane.
+pub fn openRecent(p: *Pardes, id: usize) !void {
+    var out: std.Io.Writer.Allocating = .init(p.gpa);
+    errdefer out.deinit();
+    try recentText(p, &out.writer, true);
+    const content = try out.toOwnedSlice();
+    for (p.panes, 0..) |slot, i| {
+        const rp = slot orelse continue;
+        const rf = if (rp.file) |*f| f else continue;
+        const o = rf.output orelse continue;
+        if (!std.meta.eql(o.from, Origin{ .cmd = .Recent })) continue;
+        File.setContent(p, rf, content);
+        resetBody(p, rp);
+        p.fs.refilled = rp.serial;
+        if (p.panes[id]) |pane| {
+            pane.search_pane = i;
+            pane.search_row = null;
+        }
+        look.armLookWalk(p, i);
+        return;
+    }
+    try openStepped(p, id, .{ .cmd = .Recent }, content);
+}
+
 pub fn openThemes(p: *Pardes, id: usize) !void {
     var out: std.Io.Writer.Allocating = .init(p.gpa);
     errdefer out.deinit();