regular expression - NOT match a pattern

Question

I have the following regular expression to match an email address:

^([a-zA-Z0-9])+([a-zA-Z0-9._%+-])+@([a-zA-Z0-9_.-])+\.(([a-zA-Z]){2,6})$

How can I modify this if I want to match everything BUT an email address? Instinctively, I think of something like

!(^([a-zA-Z0-9])+([a-zA-Z0-9._%+-])+@([a-zA-Z0-9_.-])+\.(([a-zA-Z]){2,6})$)

but I know that's not how regular expressions work.

Same as what you got `^(?![a-zA-Z0-9])+([a-zA-Z0-9._%+-])+@([a-zA-Z0-9_.-])+\.(([a-zA-Z]){2,6}$).+$` — , May 08 '17 at 19:24
Whatever tool you are using may have an option to negate the match. For example, grep has "-v" option — ramana_k, May 08 '17 at 19:25
@noclist, you can use the SKIP and FAIL verbs. Check this https://regex101.com/r/BfmmXx/1/ — Federico Piazza, May 08 '17 at 19:33

score 0 · Answer 1 · answered May 08 '17 at 19:30

Match anything other than an email address

^(?![a-zA-Z0-9])+([a-zA-Z0-9._%+-])+@([a-zA-Z0-9_.-])+\.(([a‌-zA-Z]){2,6}$).+$

^        # BOS
         # Not an email address
(?![a-zA-Z0-9])+([a-zA-Z0-9._%+-])+@([a-zA-Z0-9_.-])+\.(([a‌-zA-Z]){2,6}$)
.+       # Ok, match whatever this string contains
$        # EOS

regular expression - NOT match a pattern

1 Answers1