Regular Expressions 101

Character Class[-+.\w]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\wa Unicode word character

\ba Unicode word boundary

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Non-Capturing Group(?:(?!\.gov)\S)+

+repeats the group contents below at least once:

Negative Lookahead(?!\.gov)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

govthe literal text gov (case sensitive)

\Sany character that is not Unicode whitespace

Negative Lookahead(?!\S)

\Sany character that is not Unicode whitespace

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

[-+.\w]+\b@(?:(?!\.gov)\S)+(?!\S)

New

abc123@abc.c     # 'o' is in 'gov' so it ends the returned string there
456@email.edu
governmentemail@governmentaddress.      #'.gov' omitted
test@test.gov
test.test@test.org.gov.test

Regular Expression

Extraction