Linux bash printf格式，颜色分配给变量

Question

I just want a String (including coloring) be formatted by printf command and assign the result to a variable.

Without assigning it to a variable it works fine, but as soon as I assign the result to a variable and write the result, the format is gone.

My example:

RED=$'\033[0;31m'
NC=$'\033[0m'

INPUT="AB${RED}CD${NC}EF"

printf -v OUTPUT '| %-20s | %-25s| %-10s' " $INPUT " " OTHER " " TEST "
echo $OUTPUT

OUTPUT="$(printf  '| %-20s | %-25s| %-10s' " $INPUT " " OTHER " " TEST ")"
echo $OUTPUT

OUTPUT=$(printf  '| %-20s | %-25s| %-10s' " $INPUT " " OTHER " " TEST ")
echo $OUTPUT

printf '| %-20s | %-25s| %-10s' " $INPUT " " OTHER " " TEST "
echo ""

I found several solutions for passing the result to a variable (-v VARIABLE), but it looses the format.

Thanks for your help and many greetings,

Hauke

EDIT 1: Also one problem seems to be the colorcode. printf counts AB${RED}CD${NC}EF as 17 characters instead of 6.

Answer 1

Use this ( echo "$VAR" in "" ) to keep the formatting. The different ways of assigning the variable make no difference:

printf -v OUTPUT '| %-20s | %-25s| %-10s' " $INPUT " " OTHER " " TEST "
# or
OUTPUT=$(printf  '| %-20s | %-25s| %-10s' " $INPUT " " OTHER " " TEST ")
echo "$OUTPUT"