Colorize stderr

colorize_stderr.sh

# Colorize stderr output for any bash script
# to use, put the following line at the top of your script (after the shebang):
# source <(curl -s https://gist.githubusercontent.com/joshuaboud/956991c04e45b211f40e6da84b2e049e/raw/colorize_stderr.sh) && exec 2> >(colour_errors >&2)
# or to avoid pulling remotely, copy the following functions into your script followed by:
# exec 2> >(colour_errors  >&2)

print_red() {
	printf "\e[31;1m$1\e[0m"
}

print_yellow() {
	printf "\e[33;1m$1\e[0m"
}

print_orange() {
	printf "\e[33m$1\e[0m"
}

print_purple() {
	printf "\e[35;1m$1\e[0m"
}

colour_errors() {
	perl -pne "s/(err(?:or)?:)/$(print_red '\\1')/gi;s/(warn(?:ing)?:)/$(print_orange '\\1')/gi;s/(^|\\033\[0m)(.+?)(?=\\033|$)/\1$(print_yellow '\\2')/gi"
}