Regular Expressions 101

Pro

^start of line

Negated Character Class[^:\s]++

++matches at least one character outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\sany whitespace character

Negative Lookahead(?!:)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

^[^:\s]++(?!:)

New

1 : A
2 : B
3 : C
1
2
3
1:A
11:A

Line:$0

1 : A
2 : B
3 : C
1
2
3
1:A
11:A