Fossil

  const struct MarkdownToHtml* ctx = (struct MarkdownToHtml*)opaque;
  const bitfield64_t l = to_base26(locus-1,0);
  char pos[32];
  memset(pos,0,32);
  assert( locus > 0 );
  /* expect BUGs if the following yields compiler warnings */
  if( iMark > 0 ){      /* a regular reference to a footnote */
    sqlite3_snprintf(sizeof(pos), pos, "%s-%d-%s", ctx->unique.c, iMark, l.c);
    if(span && blob_size(span)) {
      blob_append_literal(ob,"<span class='");
      append_footnote_upc(ob, upc, 0);
      blob_append_literal(ob,"notescope' id='noteref");
      blob_appendf(ob,"%s'>",pos);
      blob_appendb(ob, span);
      blob_trim(ob);

      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob,"#footnote%s' id='noteref%s'>%d</a></sup>",
                      pos,           pos,  iMark);
    }
  }else{              /* misreference */
    assert( iMark == -1 );

    sqlite3_snprintf(sizeof(pos), pos, "%s-%s", ctx->unique.c, l.c);
    if(span && blob_size(span)) {
      blob_appendf(ob, "<span class='notescope' id='misref%s'>", pos);
      blob_appendb(ob, span);
      blob_trim(ob);
      blob_append_literal(ob, "<sup class='noteref misref'><a href='");
      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob, "#misreference%s'>misref</a></sup></span>", pos);

    #define _joined_footnote_indicator "<ul class='fn-joined'>"
    #define _jfi_sz (sizeof(_joined_footnote_indicator)-1)
    /* make.footnote_item() invocations should pass args accordingly */
    const struct Blob *upc = text+1;
    assert( text );
    /* allow blob_size(text)==0 for constructs like  [...](^ [] ())  */
    memset(pos,0,24);
    sqlite3_snprintf(sizeof(pos), pos, "%s-%d", unique, iMark);
    blob_appendf(ob, "<li id='footnote%s' class='", pos);
    if( nUsed ){
      if( blob_size(text)>=_jfi_sz &&
         !memcmp(blob_buffer(text),_joined_footnote_indicator,_jfi_sz)){
        bJoin = 1;
        blob_append_literal(ob, "fn-joined ");
      }