Regular Expressions 101

1st Alternative^\.+[^.\n]*

^start of string

\.+the literal . (46₁₀ / 56₈ / 2E₁₆) , repeated at least once

Negated Character Class[^.\n]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\na line-feed (newline) character (ASCII 10)

2nd Alternative[^.\n]*\.+$

Negated Character Class[^.\n]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\na line-feed (newline) character (ASCII 10)

\.+the literal . (46₁₀ / 56₈ / 2E₁₆) , repeated at least once

$end of string

3rd Alternative(?:\.{2,}|[^\n.])+(?:\.+$)?

Non-Capturing Group(?:\.{2,}|[^\n.])+

+repeats the group contents below at least once:

1st Alternative\.{2,}

\.{2,}the literal . (46₁₀ / 56₈ / 2E₁₆) , repeated at least 2 times

2nd Alternative[^\n.]

Negated Character Class[^\n.]

\na line-feed (newline) character (ASCII 10)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:\.+$)?

?repeats the group contents below at most once:

\.+the literal . (46₁₀ / 56₈ / 2E₁₆) , repeated at least once

$end of string

Global pattern flags

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

Detailed match information will be displayed here automatically.

26 tokens

Regular Expression

^\.+[^.\n]*|[^.\n]*\.+$|(?:\.{2,}|[^\n.])+(?:\.+$)?

New

test.123.test
.test
test.
test.3..test
test.3..test.
..test.3.test..

test.123.test
.test
test.
test.3..test
test.3..test.
..test.3.test..