**Describe the situation**
https://markify.dev/p/zfrQMV2/text

**How to reproduce**
On aws `c5ad.24xlarge` run a query:

```
SET max_memory_usage = '100G', max_threads = 1000, max_insert_threads = 96

INSERT INTO wikistat WITH
    parseDateTimeBestEffort(extract(toLowCardinality(_path), 'pageviews-([\\d\\-]+)\\.gz$')) AS time,
    splitByChar(' ', line) AS values,
    splitByChar('.', values[1]) AS projects
SELECT
    time,
    projects[1] AS project,
    projects[2] AS subproject,
    values[2] AS path,
    CAST(values[3], 'UInt64') AS hits
FROM s3('https://....s3.eu-central-1.amazonaws.com/wikistat/original/*.gz', '...', '...', LineAsString, auto)
WHERE length(values) >= 3
```

Performance is not bad (22 million rows are inserted per second) but can be better.
{
    while (!buf.eof())
    {
        char * next_pos = find_first_symbols<'\t', '\n', '\\'>(buf.position(), buf.buffer().end());
        appendToStringOrVector(s, buf, next_pos);
        buf.position() = next_pos;
        if (!buf.hasPendingData())
            continue;
        if (*buf.position() == '\t' || *buf.position() == '\n')
            return;
        if (*buf.position() == '\\')
            parseComplexEscapeSequence(s, buf);
    }
}
void readEscapedString(String & s, ReadBuffer & buf)
{
    s.clear();
    readEscapedStringInto(s, buf);
}
template void readEscapedStringInto<PaddedPODArray<UInt8>>(PaddedPODArray<UInt8> & s, ReadBuffer & buf);
template void readEscapedStringInto<NullOutput>(NullOutput & s, ReadBuffer & buf);
/** If enable_sql_style_quoting == true,
  *  strings like 'abc''def' will be parsed as abc'def.
  * Please note, that even with SQL style quoting enabled,
  *  backslash escape sequences are also parsed,
  *  that could be slightly confusing.
  */
template <char quote, bool enable_sql_style_quoting, typename Vector>
static void readAnyQuotedStringInto(Vector & s, ReadBuffer & buf)