Regular Expressions 101

Pro

Negative Lookbehind(?<!\S)

\Sany non-whitespace character

Negative Lookahead(?!tss(?:(?!\S)|-))

tssthe literal text tss (case sensitive)

Non-Capturing Group(?:(?!\S)|-)

1st Alternative(?!\S)

Negative Lookahead(?!\S)

\Sany non-whitespace character

2nd Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\S+any non-whitespace character, repeated at least once

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

(?<!\S)(?!tss(?:(?!\S)|-))\S+

New

This is a wor tss and this is tss-abcd tsst this is tsst tss-a tss%