Fossil

** interesting with them.  This isn't standard Markdown, so
** it's implementation-specific what occurs here.  More, each
** Fossil feature using Markdown is free to apply markup and
** behavior to these in feature-specific ways.
*/
static int html_tagspan(
  struct Blob *ob,        /* Write the output here */
  struct Blob *text,      /* The word after the tag character */
  enum mkd_tagspan type,  /* Which type of tagspan we're creating */
  void *opaque
){
  if( text==0 ){
    /* no-op */
  }else{
    char c;
    BLOB_APPEND_LITERAL(ob, "<span data-");
    switch (type) {
        case MKDT_ATREF: c='@'; BLOB_APPEND_LITERAL(ob, "atref"); break;
        case MKDT_HASH:  c='#'; BLOB_APPEND_LITERAL(ob, "hash");  break;
    }
    BLOB_APPEND_LITERAL(ob, "=\"");
    html_quote(ob, blob_buffer(text), blob_size(text));
    BLOB_APPEND_LITERAL(ob, "\"");
    blob_appendf(ob, ">%c%b</span>", c, text);
  }
  return 1;
}

static int html_triple_emphasis(
  struct Blob *ob,
  struct Blob *text,