Regular Expressions 101

Pro

Negative Lookbehind(?<!\\)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

Non-Capturing Group(?:\\!|(?:\.\.\.(?P<comment>.*?)\.\.\.)|[^!])*?

*?repeats the group contents below any number of times:

1st Alternative\\!

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

2nd Alternative(?:\.\.\.(?P<comment>.*?)\.\.\.)

Non-Capturing Group(?:\.\.\.(?P<comment>.*?)\.\.\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group comment(?P<comment>.*?)

.*?any Unicode character (except for line terminators), repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

3rd Alternative[^!]

Negated Character Class[^!]

!the literal ! (33₁₀ / 41₈ / 21₁₆)

Negative Lookbehind(?<!\\)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

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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25 tokens

(?<!\\)!(?:\\!|(?:\.\.\.(?P<comment>.*?)\.\.\.)|[^!])*?(?<!\\)!

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