Regular Expressions 101

#the literal # (35₁₀ / 43₈ / 23₁₆)

Group _id(?P<_id>[0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

@ the literal text @

Group left(?P<left>[0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group top(?P<top>[0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

: the literal text :

Group width(?P<width>[0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Group height(?P<height>[0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

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

#(?P<_id>[0-9]+) @ (?P<left>[0-9]+),(?P<top>[0-9]+): (?P<width>[0-9]+)x(?P<height>[0-9]+)

#1 @ 1,3: 4x4
#2 @ 3,1: 4x4
#3 @ 5,5: 2x2