$ recollapse -h
usage: recollapse [-h] [-m MODES] [-e {1,2,3,4}] [-r RANGE] [-s SIZE] [-f FILE] [-an] [-mn MAXNORM] [-mt MAXTRUNC] [-nt] [-tt] [-ct]
                  [--html] [--version]
                  [input]

REcollapse is a helper tool for black-box regex fuzzing to bypass validations and discover normalizations in web applications

positional arguments:
  input                 original input

options:
  -h, --help            show this help message and exit
  -m, --modes, -p, --positions MODES
                        variation modes. Example: 1,2,3,4,5,6,7 (default). 1: starting, 2: separator, 3: normalization, 4:
                        termination, 5: regex metacharacters, 6: case folding/upper/lower, 7: byte truncation
  -e, --encoding {1,2,3,4}
                        1: URL-encoded format (default), 2: Unicode format, 3: Raw format, 4: Double URL-encoded format
  -r, --range RANGE     range of bytes for fuzzing. Example: 0,0xff (default)
  -s, --size SIZE       number of fuzzing bytes (default: 1)
  -f, --file FILE       read input from file
  -an, --alphanum       include alphanumeric bytes in fuzzing range
  -mn, --maxnorm MAXNORM
                        maximum numbe