Regular Expressions 101

Pro

\ban ASCII word boundary

ythe literal y (121₁₀ / 171₈ / 79₁₆) (case sensitive)

\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match

\da digit

Positive Lookahead(?=[\h\p{L}.]|$)

1st Alternative[\h\p{L}.]

Character Class[\h\p{L}.]

\hany horizontal whitespace character

\p{L}any Unicode letter

.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\by\K\d(?=[\h\p{L}.]|$)

New

y0
y1$
y2H
y3.
y9 
y10 test y1% test
y1  y3

y0
y1$
y2H
y3.
y9 
y10 test y1% test
y1  y3