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Pattern
(^)?abcd(?(1)|\r?$)
Input
1
abcd
abcd
1 1 abcd 1
1 abcd abcd 1 1 abcd 1
Options
Ignore Case
Ignore Whitespace
Explicit Capture
Culture Invariant
Singleline
Multiline
Right To Left
ECMA Script
Start from position:
Max matches to find:
Replacement
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Regex Info
Table
Context
Split List
2
matches found in about
1
millisecond.
Show Permalink
Permalink
Index
Position
Matched String
$1
0
2
abcd
empty string
1
8
abcd
empty string
1
abcd
abcd
1 1 abcd 1
1
whitespace
empty string
1
1 abcd 1
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