Regular Expressions 101

Pro

1st Alternative\\.(*SKIP)(*F)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any character (except for line terminators)

(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character

(*F)forces the current match attempt to fail at this position

2nd Alternative(\${(?>[^$}\\]+|\\.|(?1))*})

Group 1(\${(?>[^$}\\]+|\\.|(?1))*})

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

Atomic Group(?>[^$}\\]+|\\.|(?1))*

*repeats the group contents below any number of times:

1st Alternative[^$}\\]+

Negated Character Class[^$}\\]+

+matches at least one character outside the set below:

$the literal $ (36₁₀ / 44₈ / 24₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

2nd Alternative\\.

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any character (except for line terminators)

3rd Alternative(?1)

(?1)calls group 1 as a subroutine

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

\\.(*SKIP)(*F)|(\${(?>[^$}\\]+|\\.|(?1))*})

New

${FOO=BAR}
${FOO=${BAR=BAZ}}

But also handle inputs like this:

${FOO=\${BAR=BAZ}}
${FOO={${BAR=BAZ}}

${FOO=BAR}
${FOO=${BAR=BAZ}}

But also handle inputs like this:

${FOO=\${BAR=BAZ}}
${FOO={${BAR=BAZ}}