Regular Expressions 101

Pro

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 1(.*?)

.*?any character (except for line terminators), repeated any number of times

"the literal " (34₁₀ / 42₈ / 22₁₆)

Character Class[\t\r ]+

+matches at least one character from the set below:

\ta tab character (ASCII 9)

\ra carriage return (ASCII 13)

the literal (32₁₀ / 40₈ / 20₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 2(.*?)

.*?any character (except for line terminators), repeated any number of times

"the literal " (34₁₀ / 42₈ / 22₁₆)

Positive Lookahead(?=[ ]*$)

Character Class[ ]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

$end of line

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.

25 tokens

"(.*?)"[\t\r ]+"(.*?)"(?=[ ]*$)

New

"a"		"va"
"b"		"vb"
"c"		"vc"
"d"           "vd" 
"e"		"ve"
"f"		"vf" 
"g"	"vg"
"h"	"vh"

$1 $2

"a"		"va"
"b"		"vb"
"c"		"vc"
"d"           "vd" 
"e"		"ve"
"f"		"vf" 
"g"	"vg"
"h"	"vh"