** reasonable basename of a local clone of that repository.
**
**    *  If the URL has a path, use the tail of the path, with any suffix
**       elided.
**
**    *  If the URL is just a domain name, without a path, then use the
**       first element of the domain name, except skip over "www." if 
**       present and if there is a ".com" or ".org" or similar suffix.
**
** The string returned is obtained from fossil_malloc().  NULL might be
** returned if there is an error.
*/
char *url_to_repo_basename(const char *zUrl){
  const char *zTail = 0;
  int i;
  if( zUrl==0 ) return 0;
  for(i=0; zUrl[i]; i++){
    if( zUrl[i]=='?' ) break;
    if( (zUrl[i]=='/' || zUrl[i]=='@') && zUrl[i+1]!=0 ) zTail = &zUrl[i+1];
  }
  if( zTail==0 ) return 0;
  if( sqlite3_strnicmp(zTail, "www.", 4)==0 && strchr(zTail+4,'.')!=0 ){
    /* Remove the "www." prefix if there are more "." characters later.
    ** But don't remove the "www." prefix if what follows is the suffix.
    ** forum:/forumpost/74e111a2ee */
    zTail += 4;
  }
  if( zTail[0]==0 ) return 0;
  for(i=0; zTail[i] && zTail[i]!='.' && zTail[i]!='?'; i++){}
  if( i==0 ) return 0;
  return mprintf("%.*s", i, zTail);
}

/*