===================================================================
RCS file: /cvs/mandoc/TODO,v
retrieving revision 1.305
retrieving revision 1.306
diff -u -p -r1.305 -r1.306
--- mandoc/TODO	2020/09/01 18:10:28	1.305
+++ mandoc/TODO	2020/09/07 14:18:49	1.306
@@ -1,6 +1,6 @@
 ************************************************************************
 * Official mandoc TODO.
-* $Id: TODO,v 1.305 2020/09/01 18:10:28 schwarze Exp $
+* $Id: TODO,v 1.306 2020/09/07 14:18:49 schwarze Exp $
 ************************************************************************
 
 Many issues are annotated for difficulty as follows:
@@ -31,6 +31,21 @@ Many issues are annotated for difficulty as follows:
 
 Obviously, as the issues have not been solved yet, these annotations
 are mere guesses, and some may be wrong.
+
+************************************************************************
+* assertion failures
+************************************************************************
+
+- .if n .ce in the middle of .TS data
+  afl case f1/id:000103,sig:06,src:009024+009105,op:splice,rep:2 (jes@)
+  While roff_parseln() prevents .ce and similar requests in the middle
+  of a tbl, the guard is no longer effective when the .ce is wrapped
+  in a roff block, for example a conditional.  The resulting assertion
+  has never been seen in any real-world manual page.
+  This is too dangerous to fix before release because it requires
+  reorganizing the very delicate internals of roff_parseln(),
+  which risks causing more severe bugs.
+  loc * exist *** algo *** size * imp *
 
 ************************************************************************
 * missing features