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Module tac

coreutils_rs

Module tac 

Source

Functions§

tac_bytes
Reverse records separated by a single byte. Uses a single forward SIMD scan to collect all separator positions, then builds IoSlice references in reverse order for zero-copy output. Eliminates per-record memrchr calls AND the copy to an output buffer.
tac_regex_separator
Reverse records using a regex separator. Uses regex::bytes for direct byte-level matching (no UTF-8 conversion needed). NOTE: GNU tac uses POSIX Basic Regular Expressions (BRE), so we convert to ERE first. Uses backward scanning to match GNU tac’s re_search behavior.
tac_string_separator
Reverse records using a multi-byte string separator. Uses SIMD-accelerated memmem for substring search.