Regular Expressions 101

Pro

^start of line

\[?optionally matches the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1(\w+,)*

*repeats the group contents below any number of times:

\w+any word character, repeated at least once

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 2(abc|def)

1st Alternativeabc

abcthe literal text abc (case sensitive)

2nd Alternativedef

defthe literal text def (case sensitive)

Group 3(,\w+)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\w+any word character, repeated at least once

]?optionally matches the literal ] (93₁₀ / 135₈ / 5D₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

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+,)*(abc|def)(,\w+)*]?=

New

%% good examples
x=1
aabc=1
abc=1
[other,abc]=deal(1,2)

%% bad examples
[x,aabcc]=deal(1,2)