/* allocate temporary buffers to store content, link and title */
  title = new_work_buffer(rndr);
  content = new_work_buffer(rndr);
  link = new_work_buffer(rndr);
  ret = 0; /* error if we don't get to the callback */

  /* free-standing footnote refernece */
  if(!is_img && size>3 && data[1]=='^'){
      /* free-standing footnote reference */
      fn = get_footnote(rndr, data+2, txt_e-2);
      if( !fn ) {
        rndr->notes.misref.nUsed++;
        fn = &rndr->notes.misref;
      }
      release_work_buffer(rndr, content);
      content = 0;

  }else if( i<size && data[i]=='(' ){


    if( i+2<size && data[i+1]=='^' ){  /* span-bounded inline footnote */

      const size_t k = matching_bracket_offset(data+i, data+size);
      if( !k ) goto char_link_cleanup;
      fn = add_inline_footnote(rndr, data+(i+2), k-2);
      i += k+1;
    }else{                             /* inline style link  */
      size_t span_end = i;
      while( span_end<size
       && !(data[span_end]==')' && (span_end==i || data[span_end-1]!='\\'))
      ){
        span_end++;
      }

      }
    }else if( get_link_ref(rndr, link, title, id_data, id_size)<0 ){
      goto char_link_cleanup;
    }

    i = id_end+1;

  /* shortcut reference style link */
  }else{









    if( get_link_ref(rndr, link, title, data+1, txt_e-1)<0 ){
      goto char_link_cleanup;
    }

    /* rewinding a closing square bracket */
    i = txt_e+1;
  }

  /* building content: img alt is escaped, link content is parsed */
  if( txt_e>1 && content ){
    if( is_img ) blob_append(content, data+1, txt_e-1);

   It references [its previous][^lost3] 
   and [the forthcoming][^lost1] siblings.

[^i am strayed]:
  This should be presented **verbatim** (without any [markup][^])
  in the end of the footnotes.
  
  Default skin renders label in red font and the main text in gray.
  Other styling may also apply.

Inline footnotes are supported.(^These may be usefull for adding
<s>small</s> comments.)

If [undefined label is used][^] then red "`misref`" is emited instead of
a numeric marker.[^ see it yourself ]
This can be overridden by the skin though.

The refenrence at the end of this sentence is the sole reason of
rendering of <s>`lost1` and</s> [lost2][^].

If several labeled footnote definitions have the same equal label then texts
from all these definitions are joined.[^duplicate]

Several references should be recognized as several distinct numbers.
(^There should be an interval between numbers.) [^many-refs]

If markup is ambigous between a span-bounded footnote and
a "free-standing" footnote followed by another footnote
then interpret as the later case.
This facilitates the usage in the usual case
when several footnotes are refenrenced at the end
of a phrase.[^scipub][^many-refs](^All these four should
be parsed as "free-standing" footnotes)[^Coelurosauria]

## Footnotes

[branch]: /timeline?r=markdown-footnotes&nowiki

[^ 1]:  Footnotes is a Fossil' extention of
        Markdown. Your other tools may have limited support for these.

[^markup]:   E.g. *emphasis*, and [so on](/md_rules).
   BTW, this note may not have a backreference to the "stray".

[^undefined label is used]: For example due to a typo.

[^another stray]: Just to verify the correctness of ordering and styling.

[^scipub]: Which is common in the scientific publications.