$ a=$(printf "helloragainrgeorgern")
$ echo "$a"
george

$ echo "$a" |od -w32 -t x1c
0000000  68  65  6c  6c  6f  0d  61  67  61  69  6e  0d  67  65  6f  72  67  65  0d  0a
          h   e   l   l   o  r   a   g   a   i   n  r   g   e   o   r   g   e  r  n

$ a=$(printf "ls;rGeorgen")
$ echo "$a"
George
$ eval "$a"
0                   awkprof.out       event-tester.log  helloworld.c      oneshot.sh         rightclick-tester.py  tmp                    uinput-simple.py
<directory listing appears with an error message at the end for command George>

$ a=$(echo -e "ls;rGeorgern"); echo "$a"
George

$ a=$(printf "hellooooor  again,rgeorgern")
$ echo "$a"

georgen,o

$ TESTVAR="$(printf ' Version: 1 r Build: 20180712 r Test: 1324')"

$ printf %q $TESTVAR
Version:1$'r'Build:20180712$'r'Test:1324