script for testing fancy prompt with 2 colors

bashrc.bash

#!/bin/bash

# list of colors, just what I use for test
txtrst=\[\033[00m\] # no color
txtred=\[\033[31m\] # Red
txtred=\[\033[32m\] # Green
txtblu=\[\033[34m\] # Blue

RANDOM_PROMPT()
{
	# __git_ps1
	bluepart=$RANDOM
	redpart=$RANDOM
	# 1st solution:
	# the following will display extra brackets (and same bug as 2nd solution)
	#printf '\[\033[34m\]%s\[\033[31m\]%s\[\033[00m\]' $bluepart $redpart

	# 2nd solution : with the following, if I type a long command, the CRLF is replaced by a simple CR
	# (that means the previous line is replaced, char by char)
	printf " (\033[34m%s \033[31m%s\033[0m)" "$bluepart" "$redpart"
	# 3rd solution : color handled elsewhere... but how ?
	#printf "%s %s" "$bluepart" "$redpart"
}
PS1_base='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]'

# 1st and 2nd solution
PS1_custom_end='$(RANDOM_PROMPT "(%s)") \$ '

# 3rd solution : The following works, but there is only one color
#PS1_custom_end='\[\033[01;34m\] $(RANDOM_PROMPT "(%i)")\[\033[00m\] \$ '

PS1=$PS1_base$PS1_custom_end
#PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]$txtblu$(RANDOM_PROMPT " (%s%s%s)")$txtrst\$ '