My (least) favorite in this category is email addresses. It’s astonishing how many developers screw this up by trying to validate an email address by some means other than sending a message to it.
The problem is that if you send a message just blindly, you can be tricked into sending spam to millions of addresses. I do one thing that prevents that, but does violate the standard, I verify there’s only 1 ‘@’ in the address… this technically prevents people with '@'s in their name, but they probably find it impossible to do anything with that address anyway.
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My (least) favorite in this category is email addresses. It’s astonishing how many developers screw this up by trying to validate an email address by some means other than sending a message to it.
100% agree.
™@tlduser-at-fqdn@domain.tld."user with spaces"@domain.tld"user@notdomain"@domain.tldendswitha_@domain.tlduser+tag@gmail.comunicodedomain@🤡.tldAll of those are valid, and the know-it-all developer’s shitty regex won’t cover most of them.
Except lots of email services won’t take a technically correct email anyway.
“Systems that break email already exist, so let’s add more to the world.”
Please, no.
The problem is that if you send a message just blindly, you can be tricked into sending spam to millions of addresses. I do one thing that prevents that, but does violate the standard, I verify there’s only 1 ‘@’ in the address… this technically prevents people with '@'s in their name, but they probably find it impossible to do anything with that address anyway.