PdfSections on a PDF with no outline says so, "this PDF has no outline", rather than open an empty +PdfSections

An empty pane with no word of why read as a failure to load, and was
kept to be re-shown on the next press. With no outline there is
nothing to list: the press is refused with the reason, and a read or
slot failure is said too, where it returned silently.

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

1 files changed, 7 insertions, 2 deletions

diff --git a/src/pdf_view.zig b/src/pdf_view.zig
index e435d777..6c137202 100644
--- a/src/pdf_view.zig
+++ b/src/pdf_view.zig
@@ -2008,11 +2008,16 @@ pub fn openSections(core: *pardes.Pardes, id: usize) void {
     const pane = core.panes[id] orelse return;
     const state = &(pane.pdf orelse return);
     if (rearmCleanSections(core, id, pane, state)) return;
-    const content = state.renderSections(core.pdf_gpa, core.gpa) catch return;
+    const content = state.renderSections(core.pdf_gpa, core.gpa) catch |err| return core.reportError(id, "PdfSections", err);
+    // No outline: said, not an empty pane to puzzle over.
+    if (content.len == 0) {
+        core.gpa.free(content);
+        return core.reportFailure(id, "PdfSections: this PDF has no outline");
+    }
 
     const free = core.freeSlot() orelse {
         core.gpa.free(content);
-        return;
+        return core.reportError(id, "PdfSections", error.NoPaneSlots);
     };
     const dir = std.fs.path.dirname(state.path) orelse "/";
     const result = Output.open(