|
Zero-width Assertion |
Description |
|
\b |
Asserts a word boundary |
|
\B |
Asserts anywhere except at a word boundary |
|
^ |
Asserts position only at the beginning of a line |
|
$ |
Asserts position only at the end of a line |
|
\A |
Asserts position only at the beginning of a string |
|
\z |
Asserts position only at the end of a string |
|
\Z |
Asserts position only at the end of a string or before the line break at the end of a string (if present) |
|
\G |
Asserts position at the end of the previous match or at the start of the string for the very first match |
Predefined zero-width assertions
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