My bad, completely forgot with this aspect!
So to comply with both requirements, text reader that completely ignore escape sequences and control characters (other than some specific ones like bell or [for use as delimiter] cr / lf) would be needed.
Off topic, but successor for Unicode that has structures such as supports for "how it should be read as" per character appearing in texts (in Japanese, called ルビ or ふりがな) should be standardized and forced to replace all existing character sets (keeping for compatibility features) would be strongly wanted.
This should help people with impaired vision a lot, with the costs of extended sizes, especially for CJK character sets regions.