Regular Expressions 101

Pro

Non-Capturing Group(?:\W|^)

1st Alternative\W

\Wany non-word character

2nd Alternative^

^start of line

\$*the literal $ (36₁₀ / 44₈ / 24₁₆) , repeated any number of times

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

\$*the literal $ (36₁₀ / 44₈ / 24₁₆) , repeated any number of times

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Non-Capturing Group(?:\W|$)

1st Alternative\W

\Wany non-word character

2nd Alternative$

$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.

25 tokens

(?:\W|^)\$*b\$*5(?:\W|$)

New

=b5
b$5
= $b$5
($b5)