Enumeration RegexError

Assertion expected after "(?(". Since 2.16

the backtracing control verb used does not allow an argument. Since: 2.34

the backtracing control verb requires an argument. Since: 2.34

the character value in the \u sequence is too large. Since: 2.34

Compilation of the regular expression failed.

Repeating a "DEFINE" group is not allowed. This error is never raised. Since: 2.16 Deprecated: 2.34

Two named subpatterns have the same name. Since 2.16

Regular expression too large. Since 2.16

different names for subpatterns of the same number are not allowed. Since: 2.34

Character value in "\x{...}" sequence is too large. Since 2.16

Inconsistent newline options. Since 2.16

Reference to non-existent subpattern. Since 2.16

Recursive call could loop indefinitely. Since 2.16

Internal error of the regular expression engine. Since 2.16

Invalid condition "(?(0)". Since 2.16

"\c" must be followed by an ASCII character. Since: 2.34

In JavaScript compatibility mode, "[" is an invalid data character. Since: 2.34

Invalid escape sequence in character class. Since 2.16

Octal value is greater than "\377". Since 2.16

relative reference must not be zero. Since: 2.34

Malformed number or name after "(?(". Since 2.16

Malformed "\P" or "\p" sequence. Since 2.16

The match process failed.

Failed to get memory. Since 2.16

"\g" is not followed by a braced, angle-bracketed, or quoted name or number, or by a plain number. Since: 2.16

"\c" at end of pattern. Since 2.16

Missing digit. Since 2.34

"\k" is not followed by a braced, angle-bracketed, or quoted name. Since: 2.34

Missing subpattern name. Since: 2.34

Missing terminator in subpattern name. Since 2.16

the name is too long in "(*MARK)", "(*PRUNE)", "(*SKIP)", or "(*THEN)". Since: 2.34

Nothing to repeat. Since 2.16

"\N" is not supported in a class. Since: 2.34

number is too big in escape sequence. Since: 2.34

Optimization of the regular expression failed.

POSIX collating elements are not supported. Since 2.16

POSIX named classes are supported only within a class. Since 2.16

Numbers out of order in "{}" quantifier. Since 2.16

Number too big in "{}" quantifier. Since 2.16

Range out of order in character class. Since 2.16

Replacement failed due to an ill-formed replacement string.

\C not allowed in lookbehind assertion. Since 2.16

"\" at end of pattern. Since 2.16

Subpattern name is too long (maximum 32 characters). Since 2.16

"DEFINE" group contains more than one branch. Since 2.16

Conditional group contains more than two branches. Since 2.16

too many forward references. Since: 2.34

Too many named subpatterns (maximum 10,000). Since 2.16

unknown backtracing control verb. Since: 2.34

Unknown POSIX class name. Since 2.16

Unknown property name after "\P" or "\p". Since 2.16

Missing terminating ")" or ")" without opening "(". Since 2.16

Unrecognized character after "(?", "(?<" or "(?P". Since 2.16

Unrecognized character follows "\". Since 2.16

Missing terminating "]" for character class. Since 2.16

Missing terminating ")" after comment. Since 2.16

Lookbehind assertion is not fixed length. Since 2.16