> 1.  **\[display text\]\(URL\)**
> 2.  **\[display text\]\(URL "Title"\)**
> 3.  **\[display text\]\(URL 'Title'\)**
> 4.  **\<URL\>**
> 5.  **\[display text\]\[label\]**
> 6.  **\[display text\]\[\]**
> 7.  **\[display text\]**
> 8.  **\[\]\(URL\)**

> With link formats 5, 6, and 7 ("reference links"), the URL is supplied
> elsewhere in the document, as shown below.  Link formats 6 and 7 reuse
> the display text as the label.  Labels are case-insensitive.  The title
> may be split onto the next line with optional indenting.


> * **\[label\]:&nbsp;URL**
> * **\[label\]:&nbsp;URL&nbsp;"Title"**
> * **\[label\]:&nbsp;URL&nbsp;'Title'**
> * **\[label\]:&nbsp;URL&nbsp;(Title)**

> **URL** may optionally be written **\<URL\>**.
> In addition to ordinary URLs, the **URL** may be:
> <ul>
> <li>  A pathname starting with "/" in which case the Fossil server
>      URL prefix is prepended
> <li>  A wiki page name, or a wiki page name preceded by "wiki:"
> <li> An artifact or ticket hash or hash prefix
> <li>  A date and time stamp: "YYYY-MM-DD HH:MM:SS" or a subset that
>      includes at least the day of the month.</ul>

> In form 8, then the URL becomes the display text.  This is useful for
> hyperlinks that refer to wiki pages and check-in and ticket hashes.

## Fonts ##

> *   _\*italic\*_
> *   *\_italic\_*
> *   __\*\*bold\*\*__
> *   **\_\_bold\_\_**
> *   ___\*\*\*italic+bold\*\*\*___

  struct Blob *ob,
  struct Blob *link,
  struct Blob *title,
  struct Blob *content,
  void *opaque
){
  char *zLink = blob_buffer(link);
  char *zTitle = title!=0 && blob_size(title)>0 ? blob_str(title) : 0;
  char zClose[20];



  

  wiki_resolve_hyperlink(ob, 0, zLink, zClose, sizeof(zClose), 0, zTitle);
  if( blob_size(content)==0 ){
    BLOB_APPEND_BLOB(ob, link);

  }else{

    BLOB_APPEND_BLOB(ob, content);
  }
  blob_append(ob, zClose, -1);
  return 1;
}

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

char *xhref(const char *zExtra, const char *zFormat, ...){
  char *zUrl;
  va_list ap;
  va_start(ap, zFormat);
  zUrl = vmprintf(zFormat, ap);
  va_end(ap);
  if( g.perm.Hyperlink && !g.javascriptHyperlink ){
    char *zHUrl;
    if( zExtra ){
      zHUrl = mprintf("<a %s href=\"%h\">", zExtra, zUrl);
    }else{
      zHUrl = mprintf("<a href=\"%h\">", zUrl);
    }
    fossil_free(zUrl);
    return zHUrl;
  }
  needHrefJs = 1;
  if( zExtra==0 ){
    return mprintf("<a data-href='%z' href='%R/honeypot'>", zUrl);
  }else{
    return mprintf("<a %s data-href='%z' href='%R/honeypot'>",
                   zExtra, zUrl);
  }
}
char *chref(const char *zExtra, const char *zFormat, ...){
  char *zUrl;
  va_list ap;
  va_start(ap, zFormat);
  zUrl = vmprintf(zFormat, ap);
  va_end(ap);

}

/*
** Return a pointer to the name part of zTarget (skipping the "wiki:" prefix
** if there is one) if zTarget is a valid wiki page name.  Return NULL if
** zTarget names a page that does not exist.
*/
static const char *validWikiPageName(int mFlags, const char *zTarget){
  if( strncmp(zTarget, "wiki:", 5)==0
      && wiki_name_is_wellformed((const unsigned char*)zTarget) ){
    return zTarget+5;
  }
  if( strcmp(zTarget, "Sandbox")==0 ) return zTarget;
  if( wiki_name_is_wellformed((const unsigned char *)zTarget)
   && ((mFlags & WIKI_NOBADLINKS)==0 ||
        db_exists("SELECT 1 FROM tag WHERE tagname GLOB 'wiki-%q'"
                  " AND (SELECT value FROM tagxref WHERE tagid=tag.tagid"
                  " ORDER BY mtime DESC LIMIT 1) > 0", zTarget))
  ){
    return zTarget;
  }
  return 0;

**
**    [0123456789abcdef]
**
**    [#fragment]
**
**    [2010-02-27 07:13]
*/
void wiki_resolve_hyperlink(
  Blob *pOut,             /* Write the HTML output here */
  int mFlags,             /* Rendering option flags */
  const char *zTarget,    /* Hyperlink target; text within [...] */
  char *zClose,           /* Write hyperlink closing text here */
  int nClose,             /* Bytes available in zClose[] */
  const char *zOrig,      /* Complete document text */
  const char *zTitle      /* Title of the link */
){
  const char *zTerm = "</a>";
  const char *z;
  char *zExtra = 0;
  const char *zExtraNS = 0;

  if( zTitle ){
    zExtra = mprintf(" title='%h'", zTitle);
    zExtraNS = zExtra+1;
  }
  assert( nClose>=20 );
  if( strncmp(zTarget, "http:", 5)==0
   || strncmp(zTarget, "https:", 6)==0
   || strncmp(zTarget, "ftp:", 4)==0
   || strncmp(zTarget, "mailto:", 7)==0
  ){
    blob_appendf(pOut, "<a href=\"%s\"%s>", zTarget, zExtra);
  }else if( zTarget[0]=='/' ){
    blob_appendf(pOut, "<a href=\"%R%h\"%s>", zTarget, zExtra);
  }else if( zTarget[0]=='.'
         && (zTarget[1]=='/' || (zTarget[1]=='.' && zTarget[2]=='/'))
         && (mFlags & WIKI_LINKSONLY)==0 ){
    blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
  }else if( zTarget[0]=='#' ){
    blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
  }else if( is_valid_hname(zTarget) ){
    int isClosed = 0;
    if( strlen(zTarget)<=HNAME_MAX && is_ticket(zTarget, &isClosed) ){
      /* Special display processing for tickets.  Display the hyperlink
      ** as crossed out if the ticket is closed.
      */
      if( isClosed ){
        if( g.perm.Hyperlink ){
          blob_appendf(pOut,
             "%z<span class=\"wikiTagCancelled\">[",
             xhref(zExtraNS,"%R/info/%s",zTarget)
          );
          zTerm = "]</span></a>";
        }else{
          blob_appendf(pOut,"<span class=\"wikiTagCancelled\">[");
          zTerm = "]</span>";
        }
      }else{
        if( g.perm.Hyperlink ){
          blob_appendf(pOut,"%z[", xhref(zExtraNS,"%R/info/%s", zTarget));
          zTerm = "]</a>";
        }else{
          blob_appendf(pOut, "[");
          zTerm = "]";
        }
      }
    }else if( !in_this_repo(zTarget) ){
      if( (mFlags & (WIKI_LINKSONLY|WIKI_NOBADLINKS))!=0 ){
        zTerm = "";
      }else{
        blob_appendf(pOut, "<span class=\"brokenlink\">[");
        zTerm = "]</span>";
      }
    }else if( g.perm.Hyperlink ){
      blob_appendf(pOut, "%z[",xhref(zExtraNS, "%R/info/%s", zTarget));
      zTerm = "]</a>";
    }else{
      zTerm = "";
    }
  }else if( strlen(zTarget)>=10 && fossil_isdigit(zTarget[0]) && zTarget[4]=='-'
            && db_int(0, "SELECT datetime(%Q) NOT NULL", zTarget) ){
    blob_appendf(pOut, "<a href=\"%R/timeline?c=%T\"%s>", zTarget, zExtra);
  }else if( (z = validWikiPageName(mFlags, zTarget))!=0 ){
    const char *zOverride = wiki_is_overridden(zTarget);
    if( zOverride ){
      blob_appendf(pOut, "<a href=\"%R/info/%S\"%s>", zOverride, zExtra);
    }else{
      blob_appendf(pOut, "<a href=\"%R/wiki?name=%T\"%s>", z, zExtra);
    }
  }else if( zOrig && zTarget>=&zOrig[2] && !fossil_isspace(zTarget[-2]) ){
    /* Probably an array subscript in code */
    zTerm = "";
  }else if( (mFlags & (WIKI_NOBADLINKS|WIKI_LINKSONLY))!=0 ){
    zTerm = "";
  }else{
    blob_appendf(pOut, "<span class=\"brokenlink\">[%h]", zTarget);
    zTerm = "</span>";
  }
  if( zExtra ) fossil_free(zExtra);
  assert( strlen(zTerm)<nClose );
  sqlite3_snprintf(nClose, zClose, "%s", zTerm);
}

/*
** Check to see if the given parsed markup is the correct
** </verbatim> tag.

        }
        z[i] = 0;
        if( zDisplay==0 ){
          zDisplay = zTarget;
        }else{
          while( fossil_isspace(*zDisplay) ) zDisplay++;
        }
        wiki_resolve_hyperlink(p->pOut, p->state,
                               zTarget, zClose, sizeof(zClose), zOrig, 0);
        if( linksOnly || zClose[0]==0 || p->inVerbatim ){
          if( cS1 ) z[iS1] = cS1;
          if( zClose[0]!=']' ){
            blob_appendf(p->pOut, "[%h]%s", zTarget, zClose);
          }else{
            blob_appendf(p->pOut, "%h%s", zTarget, zClose);
          }