1 files changed, 10 insertions, 3 deletions
diff --git a/src/gui/gui.zig b/src/gui/gui.zig
index 7d097e83..491373a8 100644
--- a/src/gui/gui.zig
+++ b/src/gui/gui.zig
@@ -1978,7 +1978,11 @@ fn glyphForCodepoint(g: *const Gui, cp: u32) FaceGlyph {
 }
 
 const CellLayout = struct { w: f32, h: f32, x_off: f32, y_off: f32 };
-const MouseCell = struct { col: u16, row: u16, body_hit: ?pardes.Mouse.BodyHit = null, tag_hit: ?pardes.TagHit = null };
+const MouseCell = struct { col: u16, row: u16, body_hit: ?pardes.Mouse.BodyHit = null, tag_hit: ?pardes.TagHit = null, rule_above: bool = false };
+
+/// How near a row's top edge a press is on the rule drawn there between two
+/// panes: the rule's 2 px and a pixel either side.
+const rule_grab_px: f32 = 3;
 const WindowGeometry = struct {
     window_w: f32,
     window_h: f32,
@@ -3428,6 +3432,7 @@ fn dispatch(g: *Gui, in: *Input, sev: *const c.SDL_Event) void {
                     .row = mc.row,
                     .tag_hit = mc.tag_hit,
                     .body_hit = mc.body_hit,
+                    .rule_above = mc.rule_above,
                     .ctrl = (c.SDL_GetModState() & c.SDL_KMOD_CTRL) != 0,
                 },
             });
@@ -3728,6 +3733,8 @@ fn gridCellAtDimensions(
 ) MouseCell {
     const row: u16 = @intFromFloat(@min(@floor(@max(y, 0) / @max(body_h, 1)), 10_000));
     var point: MouseCell = .{ .col = @intFromFloat(@min(@floor(@max(x, 0) / @max(body_w, 1)), 10_000)), .row = row };
+    // On the rule over this row, which is where two panes meet if they do.
+    point.rule_above = row > 0 and @max(y, 0) - @as(f32, @floatFromInt(row)) * @max(body_h, 1) < rule_grab_px;
     if (core) |p| if (p.presentation.pointerFractional(p.screen_w, p.screen_h, x / @max(body_w, 1), y / @max(body_h, 1))) |mapped| {
         for (p.surface.tagLayers()) |*layer| {
             if (layer.tagHit(mapped.x * body_w, mapped.y * body_h, body_w, body_h, tagline_w, @floatFromInt(p.row_metrics.tagline_h))) |hit| {
@@ -4525,8 +4532,8 @@ fn writeFile(ctx: ?*anyopaque, pane: u8, path: []const u8, bytes: []const u8) vo
 fn writeDump(ctx: ?*anyopaque, bytes: []const u8) void {
     const s = shellOf(ctx);
     var pbuf: [1024:0]u8 = undefined;
-    const path = pardes.dump.outPath(&pbuf, s.core.settings.dump_dir.get()) orelse return;
-    filesystem.write(s.core, path, bytes) catch |err| return s.core.reportError(0, "dump", err);
+    const path = pardes.dump.outPath(&pbuf, s.core.settings.dump_dir.get()) orelse return s.core.dumpFailed(s.core.settings.dump_dir.get(), error.NoDumpDirectory);
+    filesystem.write(s.core, path, bytes) catch |err| return s.core.dumpFailed(path, err);
     s.core.setLastDump(path);
 }