Guessing start of match in sv for REx "^((?x-ism: \( (?> (?> [^()]+ ) | (??{$pat}) )* \) ))$" against "(x(x)y(x)x)"

• Guessing start of match in sv for REx "^((?x-ism: \( (?> (?> [^()]+ ) | (??{$pat}) )* \) ))$" against "(x(x)y(x)x)"

• Found floating substr ")"$ at offset 10...

• Found anchored substr "(" at offset 0...

• Guessed: match at offset 0

• Matching REx "^((?x-ism: \( (?> (?> [^()]+ ) | (??{$pat}) )* \) ))$" against "(x(x)y(x)x)"

• 0 <> <(x(x)y(x)x> | 1:BOL(2)

• 0 <> <(x(x)y(x)x> | 2:OPEN1(4)

• 0 <> <(x(x)y(x)x> | 4:EXACT <(>(6)

• 1 <(> <x(x)y(x)x)> | 6:CURLYX[0] {0,32767}(34)

• 1 <(> <x(x)y(x)x)> | 33: WHILEM[1/1](0)

• whilem: matched 0 out of 0..32767

• saving \1 -1(0)..-1

• 1 <(> <x(x)y(x)x)> | 8: SUSPEND(33)

• 1 <(> <x(x)y(x)x)> | 10: BRANCH(27)

• 1 <(> <x(x)y(x)x)> | 11: SUSPEND(31)

• 1 <(> <x(x)y(x)x)> | 13: PLUS(25)

• ANYOF[\0-'*-\377{unicode_all}] can match 1 times out of 2147483647...

• 2 <(x> <(x)y(x)x)> | 25: SUCCEED(0)

• subpattern success...

• 2 <(x> <(x)y(x)x)> | 31: SUCCEED(0)

• subpattern success...

• 2 <(x> <(x)y(x)x)> | 33: WHILEM[1/1](0)

• whilem: matched 1 out of 0..32767

• saving \1 -1(0)..-1

• 2 <(x> <(x)y(x)x)> | 8: SUSPEND(33)

• 2 <(x> <(x)y(x)x)> | 10: BRANCH(27)

• 2 <(x> <(x)y(x)x)> | 11: SUSPEND(31)

• 2 <(x> <(x)y(x)x)> | 13: PLUS(25)

• ANYOF[\0-'*-\377{unicode_all}] can match 0 times out of 2147483647...

• failed...

• failed...

• 2 <(x> <(x)y(x)x)> | 27: BRANCH(31)

• 2 <(x> <(x)y(x)x)> | 28: LOGICAL[2](29)

• 2 <(x> <(x)y(x)x)> | 29: EVAL(31)

• Matching embedded REx " \( (?> (?> [^()]+ ) | (??{$pat}) )* \) " against "(x)y(x)x)"

• saving \1 -1(0)..-1

• 2 <(x> <(x)y(x)x)> | 1: EXACT <(>(3)

• 3 <(x(> <x)y(x)x)> | 3: CURLYX[0] {0,32767}(31)

• 3 <(x(> <x)y(x)x)> | 30: WHILEM[1/1](0)

• whilem: matched 0 out of 0..32767

• [.... yada .... yada .... yada .... ]

• Matching embedded REx " \( (?> (?> [^()]+ ) | (??{$pat}) )* \) " against ")"

• saving \1 -1(0)..-1

• 10 <(x(x)y(x)x> <)> | 1: EXACT <(>(3)

• failed...

• restoring \1 to -1(0)..-1(no)

• restoring \1..\1 to undef

• failed...

• restoring \1 to -1(0)..-1(no)

• restoring \1..\1 to undef

• whilem: failed, trying continuation...

• 10 <(x(x)y(x)x> <)> | 34: NOTHING(35)

• 10 <(x(x)y(x)x> <)> | 35: EXACT <)>(37)

• 11 <(x(x)y(x)x)> <> | 37: CLOSE1(39)

• 11 <(x(x)y(x)x)> <> | 39: EOL(40)

• 11 <(x(x)y(x)x)> <> | 40: END(0)

• Match successful!

• Freeing REx: "^((?x-ism: \( (?> (?> [^()]+ ) | (??{$pat}) )* \) ))$"

• Freeing REx: " \( (?> (?> [^()]+ ) | (??{$pat}) )* \) "