Remove unreferenced: ignore names that are not Fonts or XObjects

Converted ResourceFinder to ParserCallbacks so we can better detect
the name that precedes various operators and use the operators to sort
the names into resource types. This enables us to be smarter about
detecting unreferenced resources in pages and also sets the stage for
reconciling differences in /DR across documents.

1 files changed, 0 insertions, 9 deletions

diff --git a/TODO b/TODO
index b7562008..5a0b8e0b 100644
--- a/TODO
+++ b/TODO
@@ -34,15 +34,6 @@ Document-level work
   --copy-attachments-from to preserve these. What will the strategy be
   for deduplicating in the automatic case?
 
-* When I get to tagged PDF, note that the presence of /Artifact and
-  /Standard (and maybe others?) causes a false positive on detection
-  of unresolved names. Example: form-fields-and-annotations.pdf. This
-  used to give a warning (never in a released version), but the
-  warning was removed. See comments about tagged pdf in
-  QPDFPageObjectHelper::removeUnreferencedResourcesHelper. Another
-  potential solution is to recognize names that refer to fonts and
-  xobjects but only looking at names used with Tf and Do operators.
-
 Fuzz Errors
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