Regular Expressions 101

^start of line

Non-Capturing Group(?:\{[^{}:]*:[^:{}]*}|[^{:}])+

+repeats the group contents below at least once:

1st Alternative\{[^{}:]*:[^:{}]*}

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

Negated Character Class[^{}:]*

*matches any number of characters outside the set below:

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Negated Character Class[^:{}]*

*matches any number of characters outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

2nd Alternative[^{:}]

Negated Character Class[^{:}]

{the literal { (123₁₀ / 173₈ / 7B₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

$end of line

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

^(?:\{[^{}:]*:[^:{}]*}|[^{:}])+$

New

Valid case: 
{test:test1} {test2:test3} test4 test5
Invalid case:
{test:}, {test1: test2, test1: test3}