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@@ -639,7 +639,7 @@
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 ReferenceLink = ReferenceLinkDouble | ReferenceLinkSingle
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-ReferenceLinkDouble =  a:Label < Spnl >  b:Label
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+ReferenceLinkDouble =  a:Label < Spnl > !"[]" b:Label
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                        {   link match;
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                            if (find_reference(&match, b.children))
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                                $$ = mk_link(a.children, match.url, match.title);
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@@ -667,9 +667,8 @@
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 Source  = ( '<' < SourceContents > '>' | < SourceContents > )
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           { $$ = mk_str(yytext); }
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-SourceContents = ( ( !'(' !')' !'>' Nonspacechar )+
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-                 | '(' SourceContents ')'
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-                 )*
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+SourceContents = ( ( !'(' !')' !'>' Nonspacechar )+ | '(' SourceContents ')')*
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+                 | ""
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 Title = ( TitleSingle | TitleDouble | < "" > ) 
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         { $$ = mk_str(yytext); }
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@@ -689,12 +688,12 @@
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                     $$ = mk_link(cons(mk_str(yytext), NULL), mailto, ""); 
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                 } 
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-Reference = NonindentSpace  l:Label ':' Spnl s:RefSrc Spnl t:RefTitle BlankLine*
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+Reference = NonindentSpace !"[]" l:Label ':' Spnl s:RefSrc Spnl t:RefTitle BlankLine*
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             { $$ = mk_link(l.children, s.contents.str, t.contents.str); $$.key = REFERENCE; }
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 Label = '[' ( !'^' &{ extension(EXT_NOTES) } | &. &{ !extension(EXT_NOTES) } )
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         a:StartList 
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-        ( !']' Inline { pushelt($$, &a); } )+
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+        ( !']' Inline { pushelt($$, &a); } )*
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         ']'
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         { $$ = mk_list(LIST, a); }
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