Regular Expressions 101

Explanation

Pro

Group 1( # (1 start) [^\s="]+ \s* = \s* (?: " [^"\\]* (?: \\ [\S\s] [^"\\]* )* " | [^\s=]+ ) )

Comment: (1 start)

Negated Character Class[^\s="]+

+matches at least one character outside the set below:

\sa Unicode whitespace character

=the literal = (61₁₀ / 75₈ / 3D₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

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

= the literal text =

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

Non-Capturing Group(?: " [^"\\]* (?: \\ [\S\s] [^"\\]* )* " | [^\s=]+ )

1st Alternative " [^"\\]* (?: \\ [\S\s] [^"\\]* )* "

" the literal text "

Negated Character Class[^"\\]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Non-Capturing Group(?: \\ [\S\s] [^"\\]* )*

*repeats the group contents below any number of times:

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Character Class[\S\s]

\Sany character that is not Unicode whitespace

\sa Unicode whitespace character

Negated Character Class[^"\\]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

" the literal text "

2nd Alternative [^\s=]+

Negated Character Class[^\s=]+

+matches at least one character outside the set below:

\sa Unicode whitespace character

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Comment: (1 end)

Group 2( [ \t]+ )

Character Class[ \t]+

+matches at least one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Comment: (2)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(                             # (1 start)
     [^\s="]+ \s* = \s* 
     (?:
          " [^"\\]* 
          (?: \\ [\S\s] [^"\\]* )*
          "
       |  [^\s=]+ 
     )
)                             # (1 end)
( [ \t]+ )                    # (2)

New

key1=value1 key1=value1 spaces="some spaces in text" nested1="key2=value2 key2=value2 key2=value2"  nested2="key2=value2, key2=value2, key2=value2" quoted="his name is \"no body\"" something=else

Substitution

key1=value1 key1=value1 spaces="some spaces in text" nested1="key2=value2 key2=value2 key2=value2"  nested2="key2=value2, key2=value2, key2=value2" quoted="his name is \"no body\"" something=else