if( fossil_strcmp(g.zRepositoryName, "/")==0 ){
      zBase++;
#if defined(_WIN32) || defined(__CYGWIN__)
      if( sqlite3_strglob("/[a-zA-Z]:/*", zPathInfo)==0 ) i = 4;
#endif
    }
    while( 1 ){
      size_t nBase = strlen(zBase);
      while( zPathInfo[i] && zPathInfo[i]!='/' ){ i++; }

      /* The candidate repository name is some prefix of the PATH_INFO
      ** with ".fossil" appended */
      zRepo = zToFree = mprintf("%s%.*s.fossil",zBase,i,zPathInfo);
      if( g.fHttpTrace ){
        @ <!-- Looking for repository named "%h(zRepo)" -->
        fprintf(stderr, "# looking for repository named \"%s\"\n", zRepo);
      }


      /* For safety -- to prevent an attacker from accessing arbitrary disk
      ** files by sending a maliciously crafted request URI to a public
      ** server -- make sure the repository basename contains no
      ** characters other than alphanumerics, "/", "_", "-", and ".", and
      ** that "-" never occurs immediately after a "/" and that "." is always
      ** surrounded by two alphanumerics.  Any character that does not
      ** satisfy these constraints is converted into "_".
      */
      szFile = 0;
      for(j=strlen(zBase)+1, k=0; zRepo[j] && k<i-1; j++, k++){
      for(j=nBase+1, k=0; zRepo[j] && k<i-1; j++, k++){
        char c = zRepo[j];
        if( fossil_isalnum(c) ) continue;
#if defined(_WIN32) || defined(__CYGWIN__)
        /* Allow names to begin with "/X:/" on windows */
        if( c==':' && j==2 && sqlite3_strglob("/[a-zA-Z]:/*", zRepo)==0 ){
          continue;
        }
#endif
        if( c=='/' ) continue;
        if( c=='_' ) continue;
        if( c=='-' && zRepo[j-1]!='/' ) continue;
        if( c=='.' && fossil_isalnum(zRepo[j-1]) && fossil_isalnum(zRepo[j+1])){
          continue;
        }
        if( c=='.' && strncmp(&zRepo[j-1],"/.well-known/",12)==0 && j==nBase+1){
          /* We allow .well-known as the top-level directory for ACME */
          continue;
        }
        /* If we reach this point, it means that the request URI contains
        ** an illegal character or character combination.  Provoke a
        ** "Not Found" error. */
        szFile = 1;
        if( g.fHttpTrace ){
          @ <!-- Unsafe pathname rejected: "%h(zRepo)" -->

        ** being delivered accidently.  This is not intended to be a
        ** general-purpose web server.  The "--file GLOB" mechanism is
        ** designed to allow the delivery of a few static images or HTML
        ** pages.
        */
        if( pFileGlob!=0
         && file_isfile(zCleanRepo, ExtFILE)
         && glob_match(pFileGlob, file_cleanup_fullpath(zRepo))
         && glob_match(pFileGlob, file_cleanup_fullpath(zRepo+nBase))
         && sqlite3_strglob("*.fossil*",zRepo)!=0
         && (zMimetype = mimetype_from_name(zRepo))!=0
         && strcmp(zMimetype, "application/x-fossil-artifact")!=0
        ){
          Blob content;
          blob_read_from_file(&content, file_cleanup_fullpath(zRepo), ExtFILE);
          cgi_set_content_type(zMimetype);