Regular Expressions 101

Pro

Group 1([^.]*\.){4}

{4}repeats the group contents below exactly 4 times:

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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.

25 tokens

Regular Expression

([^.]*\.){4}

New

This is a test. In which I'm trying. To insert a newline character. After every 4th period. In a block of text. In order to build in some whitespace for epic textblocks.

Extraction

This is a test. In which I'm trying. To insert a newline character. After every 4th period. In a block of text. In order to build in some whitespace for epic textblocks.