valida el formato del registro federal de contribuyentes de México.

The string '{}' is valid while '{{}' is invalid as well as '}{'. Now, is this one valid: '{{{{v{a{l{{i{d or }i}}}n}v}}al}i}d?' ?

Match all certificate in a chain from a OpenSSL s_client output. Need for this come from a script that should be able to verify the root CA of a URL.

sim regex

Grupo Autores

as

Alow alphanumeric characters and spaces

Replaces all occurrences of AssertTrue(a == b); in a file with AssertEquals(a,b), which allows for more information in the test.

http://haacked.com/archive/2004/10/25/usingregularexpressionstomatchhtml.aspx/

This regex defines the end and the beginning of a WindowsUpdate.log event.

U.S. Phone number with optional area code.

Expresion regular para encontrar la palabra publicidad en los correos.

Matches any worldmodel ID, and captures the class and instance numbers.

matches http/https/www or without, also validates encoded