Must have at leat one number, at leat one capital letter, at least one lower case letter. Also you can have special characters !.@$%&+=-? if you want for extra security. This is not manditory. Change (?=.[a-z\!.@$%&*+=\-\?]) to (?=.[\!.@$%&+=\-\_?]) to make thees special characters manditory. No le...

if(a)

easy syntax check for equation

check if two operator follow and if two [xX] follow. You can combine this with https://regex101.com/r/qT7fO0/1

This is able to match both side of an equation.

#define const_value 4 to const uint8_t const_value 4

const uint8_t T_SYN_3 23 to const uint8_t T_SYN_3 = 23;

Allow only two or more labels. Fix deprecated FQDN regexp not passing on test "dicas-l.com.br"

Useful for finding array error. Example: {'id':'1','name':'test',} Finds the ",}" from the example