can handle backreferences
and look-around.the literalnot allowed

Consider enabling multiline mode with the --multiline flag (or -U for short).
When multiline mode is enabled, new line characters can be matched.pattern contains "\0"

Consider enabling text mode with the --text flag (or -a for short). Otherwise,
binary detection is enabled and matching a NUL byte is impossible.separator must be valid UTF-8 (use escape sequences to provide a separator that is not valid UTF-8)sorting by last modified isn't supported: sorting by last accessed isn't supported: sorting by creation time isn't supported: failed to initialize logger: no extra arguments found from configuration filecrates/core/flags/parse.rsnot reading config files because --no-config is presentinvalid CLI argumentsunrecognized flag -unrecognized flag --missing value for flag error parsing flag similar flags that are available: fewer than u32::MAX flagsinternal error: entered unreachable code: got flag value but expected switchcrates/core/flags/mod.rsinternal error: entered unreachable code: got switch but expected flag value: failed to pass haystack filter: file type: , metadata: crates/core/haystack.rsrg::haystack: binary detection: crates/core/search.rsrg::searchpreprocessor command could not start: 'preprocessor command failed: 'crates/core/main.rsNo files were searched, which means ripgrep probably applied a filter you didn't expect.
Running with --debug will show why files are being skipped.
 matches
 matched lines
 files contained matches
 bytes printed
 seconds spent searching
 seconds total