Regular Expressions 101

Pro

1st Alternative"[^\n"]*"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^\n"]*

*matches any number of characters outside the set below:

\na line-feed (newline) character (ASCII 10)

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative[^\s,'"]+(?:\s+[^\s,'"]+)*

Negated Character Class[^\s,'"]+

+matches at least one character outside the set below:

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Non-Capturing Group(?:\s+[^\s,'"]+)*

*repeats the group contents below any number of times:

\s+any whitespace character, repeated at least once

Negated Character Class[^\s,'"]+

+matches at least one character outside the set below:

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

3rd Alternative(?<=,)\s*(?=,)

Positive Lookbehind(?<=,)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*any whitespace character, repeated any number of times

Positive Lookahead(?=,)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

Detailed match information will be displayed here automatically.

26 tokens

"[^\n"]*"|[^\s,'"]+(?:\s+[^\s,'"]+)*|(?<=,)\s*(?=,)

New

'a,b,c,d,e'
'a,b,"c,d", e'
'a,,"c,d", e'
 xz a,, b, c, "d, e, f", g, h
'a, ,"c,d", e'

'a,b,c,d,e'
'a,b,"c,d", e'
'a,,"c,d", e'
 xz a,, b, c, "d, e, f", g, h
'a, ,"c,d", e'