* Optimized label regex matcher with literal prefix and/or suffix
Signed-off-by: Marco Pracucci <marco@pracucci.com>
* Added license
Signed-off-by: Marco Pracucci <marco@pracucci.com>
* Added more tests cases with newlines
Signed-off-by: Marco Pracucci <marco@pracucci.com>
* Restored deleted test
Signed-off-by: Marco Pracucci <marco@pracucci.com>
Instead, just make the anchoring part of the internal regex. This helps because
some users will want to read back the `Value` field and expect it to be the
same as the input value (e.g. some tests in Cortex), or use the value in
another context which is already expected to add its own anchoring, leading to
superfluous double anchoring (such as when we translate matchers into remote
read request matchers).
