Regex for Git Commit Hash

javascript

const regex = /^[0-9a-f]{7,40}$/;
const isValid = regex.test(value);

python

import re
pattern = r'^[0-9a-f]{7,40}$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^[0-9a-f]{7,40}$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^[0-9a-f]{7,40}$/', $value)) {
    echo "valid";
}

java

String pattern = "^[0-9a-f]{7,40}$";
boolean isValid = value.matches(pattern);