Regular Expressions 101

^start of line

Atomic Group(?>[\t\v]+(?<GECKScript>[]!#$%&()*+.\/0-9:;<=>A-Z[a-z{|}^-]+))+

+repeats the group contents below at least once:

Character Class[\t\v]+

+matches at least one character from the set below:

\ta tab character (ASCII 9)

\vany vertical whitespace character

Group GECKScript(?<GECKScript>[]!#$%&()*+.\/0-9:;<=>A-Z[a-z{|}^-]+)

Character Class[]!#$%&()*+.\/0-9:;<=>A-Z[a-z{|}^-]+

+matches at least one character from the set below:

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

$the literal $ (36₁₀ / 44₈ / 24₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

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Search reference

Regular Expression

^(?>[\t\v]+(?<GECKScript>[]!#$%&()*+.\/0-9:;<=>A-Z[a-z{|}^-]+))+

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