# Generate a simple `regex to match exact strings
grex space_separated_strings
# Generate a case-insensitive `regex`:
grex [-i|--ignore-case] space_separated_strings
# Replacements - good for more generic matches given specific test cases
# Replace digits with '\d'
grex [-d|--digits] space_separated_strings
# Replace Unicode word character with '\w':
grex [-w|--words] space_separated_strings
# Replace spaces with '\s':
grex [-s|--spaces] space_separated_strings
# Add {min, max} quantifier representation for repeating sub-strings
grex [-r|--repetitions] space_separated_strings