Regular Expressions 101

\h*any horizontal whitespace character, repeated any number of times

\Ra newline sequence

Positive Lookahead(?=[a-z])

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Negative Lookahead(?!or$)

orthe literal text or (case sensitive)

$end of line

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

\h*\R(?=[a-z])(?!or$)

New

Books are an effective way to 
communicate across time, both from the past and into the future.

Chapter 3 
The Importance of Reading 
or
Literature is the most agreeable way of ignoring life

Regular Expression

Substitution