\s*any whitespace character, repeated any number of times
\{the literal { (12310 / 1738 / 7B16)
\{the literal { (12310 / 1738 / 7B16)
sourcethe literal text source (case sensitive) \|the literal | (12410 / 1748 / 7C16)
Atomic Group(?>[^{}]|(\{\{(?:[^{}]++|(?1))*}}))* *repeats the group contents below any number of times:
Negated Character Class[^{}] {the literal { (12310 / 1738 / 7B16)
}the literal } (12510 / 1758 / 7D16)
2nd Alternative(\{\{(?:[^{}]++|(?1))*}}) Group 1(\{\{(?:[^{}]++|(?1))*}}) \{the literal { (12310 / 1738 / 7B16)
\{the literal { (12310 / 1738 / 7B16)
Non-Capturing Group(?:[^{}]++|(?1))* *repeats the group contents below any number of times:
Negated Character Class[^{}]++ ++matches at least one character outside the set below:
{the literal { (12310 / 1738 / 7B16)
}the literal } (12510 / 1758 / 7D16)
(?1)calls group 1 as a subroutine
\s*any whitespace character, repeated any number of times
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