Regular Expressions 101

Explanation

Pro

Group 1(\btotal\b)

\ban ASCII word boundary

totalthe literal text total (case sensitive)

\ban ASCII word boundary

Negative Lookahead(?!.*[\r\n]*.*\1)

.*any character (except for line terminators), repeated any number of times

Character Class[\r\n]*

*matches any number of characters from the set below:

\ra carriage return (ASCII 13)

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

.*any character (except for line terminators), repeated any number of times

\1the text saved by group 1

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

(\btotal\b)(?!.*[\r\n]*.*\1)

New

something total abc 
total 


foo total anything here
total



Anything total done!