ANSI escape code

wikipedia:ANSI escape code

sed -e 's/\x1b\[[0-9;]*m//g'
gcloud --help | sed -e 's/\x1b\[[0-9;]*m//g' 

pip install ansi2txt
gcloud --help | ansi2txt

• ASCII escape character
• gcloud --help
• Lines with a single space

ANSI, ANSI escape code, ASCII escape character