Regex-VM Coverage - 2023.2 English

Due to limited resources and a strict release timeline, in current release, we only provide the most frequently used OPs in the whole OP list given by Oniguruma library to support common regular expressions. This can be shown in the following table:

OP list	Supported
FINISH	NO
END	YES
STR_1	YES
STR_2	YES
STR_3	YES
STR_4	YES
STR_5	YES
STR_N	YES
STR_MB2N1	NO
STR_MB2N2	NO
STR_MB2N3	NO
STR_MB2N	NO
STR_MB3N	NO
STR_MBN	NO
CCLASS	YES
CCLASS_MB	NO
CCLASS_MIX	NO
CCLASS_NOT	YES
CCLASS_MB_NOT	NO
CCLASS_MIX_NOT	NO
ANYCHAR	YES
ANYCHAR_ML	NO
ANYCHAR_STAR	YES
ANYCHAR_ML_STAR	NO
ANYCHAR_STAR_PEEK_NEXT	NO
ANYCHAR_ML_STAR_PEEK_NEXT	NO
WORD	NO
WORD_ASCII	NO
NO_WROD	NO
NO_WORD_ASCII	NO
WORD_BOUNDARY	NO
NO_WORD_BOUNDARY	NO
WORD_BEGIN	NO
WORD_END	NO
TEXT_SEGMENT_BOUNDARY	NO
BEGIN_BUF	YES
END_BUF	YES
BEGIN_LINE	YES
END_LINE	YES
SEMI_END_BUF	NO
CHECK_POSITION	NO
BACKREF1	NO
BACKREF2	NO
BACKREF_N	NO
BACKREF_N_IC	NO
BACKREF_MULTI	NO
BACKREF_MULTI_IC	NO
BACKREF_WITH_LEVEL	NO
BACKREF_WITH_LEVEL_IC	NO
BACKREF_CHECK	NO
BACKREF_CHECK_WITH_LEVEL	NO
MEM_START	YES
MEM_START_PUSH	YES
MEM_END_PUSH	NO
MEM_END_PUSH_REC	NO
MEM_END	YES
MEM_END_REC	NO
FAIL	YES
JUMP	YES
PUSH	YES
PUSH_SUPER	NO
POP	YES
POP_TO_MARK	YES
PUSH_OR_JUMP_EXACT1	YES
PUSH_IF_PEEK_NEXT	NO
REPEAT	YES
REPEAT_NG	NO
REPEAT_INC	YES
REPEAT_INC_NG	NO
EMPTY_CHECK_START	NO
EMPTY_CHECK_END	NO
EMPTY_CHECK_END_MEMST	NO
EMPTY_CHECK_END_MEMST_PUSH	NO
MOVE	NO
STEP_BACK_START	YES
STEP_BACK_NEXT	NO
CUT_TO_MARK	NO
MARK	YES
SAVE_VAL	NO
UPDATE_VAR	NO
CALL	NO
RETURN	NO
CALLOUT_CONTECTS	NO
CALLOUT_NAME	NO

Therefore, the supported atomic regular expressions and their corresponding descriptions should be:

Regex	Description
^	asserts position at start of a line
$	asserts position at the end of a line
\A	asserts position at start of the string
\z	asserts position at the end of the string
\ca	matches the control sequence CTRL+a
\C	matches one data unit, even in UTF mode (best avoided)
\c\\	matches the control sequence CTRL+\
\s	matches any whitespace character (equal to [\r\n\t\f\v ])
\S	matches any non-whitespace character (equal to [^\r\n\t\f\v ])
\d	matches a digit (equal to [0-9])
\D	matches any character that’s not a digit (equal to [^0-9])
\h	matches any horizontal whitespace character (equal to [[:blank:]])
\H	matches any character that’s not a horizontal whitespace character
\w	matches any word character (equal to [a-zA-Z0-9_])
\W	matches any non-word character (equal to [^a-zA-Z0-9_])
\^	matches the character ^ literally
\$	matches the character $ literally
\N	matches any non-newline character
\g'0'	recurses the 0th subpattern
\o{101}	matches the character A with index with 101(oct)
\x61	matches the character a (hex 61) literally
\x{1 2}	matches 1 (hex) or 2 (hex)
\17	matches the character oct 17 literally
abc	matches the abc literally
.	matches any character (except for line terminators)
|	alternative
[^a]	match a single character not present in the list below
[a-c]	matches a, b, or c
[abc]	matches a, b, or c
[:upper:]	matches a uppercase letter [A-Z]
a?	matches the a zero or one time (greedy)
a*	matches a between zero and unlimited times (greedy)
a+	matches a between one and unlimited times (greedy)
a??	matches a between zero and one times (lazy)
a*?	matches a between zero and unlimited times (lazy)
a+?	matches a between one and unlimited times (lazy)
a{2}	matches a exactly 2 times
a{0,}	matches a between zero and unlimited times
a{1,2}	matches a one or two times
{,}	matches {,} literally
(?#blabla)	comment blabla
(a)	capturing group, matches a literally
(?<name1> a)	named capturing group name1, matches a literally
(?:)	non-capturing group
(?i)	match the remainder of the pattern with the following effective flags: gmi (i modifier: insensitive)
(?<!a)z	matches any occurrence of z that is not preceded by a (negative look-behind)
z(?!a)	match any occurrence of z that is not followed by a (negative look-ahead)