regex101: SPLIT

1st Alternative((?# FIRST TYPE OF ARGS\ )(?#start arg)("|'|`)(?#\ )(?#arg)(?<arg>(?# whole repeat pattern)((?!\3)(?(?!\\).|..))*)(?#\ )(?#end arg)\3(?#\ ))

Group 2((?# FIRST TYPE OF ARGS\ )(?#start arg)("|'|`)(?#\ )(?#arg)(?<arg>(?# whole repeat pattern)((?!\3)(?(?!\\).|..))*)(?#\ )(?#end arg)\3(?#\ ))

Comment: FIRST TYPE OF ARGS\

Comment: start arg

Group 3("|'|`)

1st Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

3rd Alternative`

`the literal ` (96₁₀ / 140₈ / 60₁₆)

Comment: \

Comment: arg

Group arg(?<arg>(?# whole repeat pattern)((?!\3)(?(?!\\).|..))*)

Comment: whole repeat pattern

Group 5((?!\3)(?(?!\\).|..))*

*repeats the group contents below any number of times:

Negative Lookahead(?!\3)

\3the text saved by group 3

Condition(?(?!\\).|..)

Uses the first branch if the lookaround matches

Negative Lookahead(?!\\)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

If the condition is true, match this branch:.

.any character (except for line terminators)

Otherwise, match this branch:..

.any character (except for line terminators)

Comment: \

Comment: end arg

\3the text saved by group 3

Comment: \

2nd Alternative((?# SECOND TYPE OF ARGS\ )(?#start arg)(^|\s+)(?#\ )(?#arg)(?<arg_>(?#whole repeat pattern)((?!\s|$)(?(?!\\).|..))+)(?#\ ))

Group 6((?# SECOND TYPE OF ARGS\ )(?#start arg)(^|\s+)(?#\ )(?#arg)(?<arg_>(?#whole repeat pattern)((?!\s|$)(?(?!\\).|..))+)(?#\ ))

Comment: SECOND TYPE OF ARGS\

Comment: start arg

Group 7(^|\s+)

1st Alternative^

^start of line

2nd Alternative\s+

\s+any whitespace character, repeated at least once

Comment: \

Comment: arg

Group arg_(?<arg_>(?#whole repeat pattern)((?!\s|$)(?(?!\\).|..))+)

Comment: whole repeat pattern

Group 9((?!\s|$)(?(?!\\).|..))+

+repeats the group contents below at least once:

Negative Lookahead(?!\s|$)

1st Alternative\s

\sany whitespace character

2nd Alternative$

$end of line

Condition(?(?!\\).|..)

Uses the first branch if the lookaround matches

Negative Lookahead(?!\\)

If the condition is true, match this branch:.

Otherwise, match this branch:..

Comment: \

Comment: \ skipping trailing whitespaces

Group 10(\s|^|$)*

Positive Lookahead(?=(\s|^|$|"|'|`))

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

25 tokens

Regular Expression

(((?# FIRST TYPE OF ARGS\
)(?#start arg)("|'|`)(?#\
)(?#arg)(?<arg>(?# whole repeat pattern)((?!\3)(?(?!\\).|..))*)(?#\
)(?#end arg)\3(?#\
))|((?# SECOND TYPE OF ARGS\
)(?#start arg)(^|\s+)(?#\
)(?#arg)(?<arg_>(?#whole repeat pattern)((?!\s|$)(?(?!\\).|..))+)(?#\
)))(?#\
skipping trailing whitespaces)(\s|^|$)*(?=(\s|^|$|"|'|`))

Unit Tests

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