Re: Footnote in footnote

[Eli Zaretskii]

> From: Akim Demaille <address@hidden>
> Date: 23 Aug 2001 08:41:11 +0200
> 
> Putting a footnote inside a footnote causes makeinfo to SEGV.  TeX
> processes it, but forgets to include the content of the second
> footnote.

Indeed; thanks for reporting this.  I think the changes below should
take care of that; please try.


2001-08-23  Eli Zaretskii  <address@hidden>

        * makeinfo/footnote.c (cm_footnote): Don't allow footnotes inside
        footnotes.
        (output_pending_notes): Increment already_outputting_pending_notes
        in the HTML case as well, to protect execute_string from
        recursively entering output_pending_notes.

--- makeinfo/footnote.c~0       Mon Sep 20 14:20:52 1999
+++ makeinfo/footnote.c Thu Aug 23 13:07:44 2001
@@ -200,6 +200,18 @@ cm_footnote ()
       return;
     }
 
+  /* output_pending_notes is non-reentrant (it uses a global data
+     structure pending_notes, which it frees before it returns), and
+     TeX doesn't grok footnotes inside footnotes anyway.  Disallow
+     that.  */
+  if (already_outputting_pending_notes)
+    {
+      line_error (_("Footnotes inside footnotes are not allowed"));
+      free (marker);
+      free (note);
+      return;
+    }
+
   if (!*marker)
     {
       free (marker);
@@ -328,7 +340,9 @@ output_pending_notes ()
            /* Make the text of every footnote begin a separate paragraph.  */
             add_word_args ("<li><a name=\"fn-%d\"></a>\n<p>",
                           footnote->number);
+            already_outputting_pending_notes++;
             execute_string ("%s", footnote->note);
+            already_outputting_pending_notes--;
             add_word ("</p>\n");
           }
         else