Unicode encoding and decoding, OSX 10.13.5.

I am struggling here to understand......
The default encoding.
See photo 1.
Why does this NOT work?

#!/bin/bash
# Code for OSX 10.13.5. default UNICODE encoding.
echo""
echo "The default UTF-8..."
locale
echo""
echo "Change to 8 bit ASCII only..."
LANG="en_GB.US-ASCII"
export LANG="en_GB.US-ASCII"
locale
echo ""
for N in {0..255}
do
	printf '\x'$( printf "%02x" "$N" )
done
echo ""

Runtime result:

Last login: Mon Jun 25 17:35:20 on ttys000
AMIGA:amiga~> cd ~/Desktop/Code/Shell
AMIGA:amiga~/Desktop/Code/Shell> ./Unicode_Locale.sh

The default UTF-8...
LANG="en_GB.UTF-8"
LC_COLLATE="en_GB.UTF-8"
LC_CTYPE="en_GB.UTF-8"
LC_MESSAGES="en_GB.UTF-8"
LC_MONETARY="en_GB.UTF-8"
LC_NUMERIC="en_GB.UTF-8"
LC_TIME="en_GB.UTF-8"
LC_ALL=

Change to 8 bit ASCII only...
LANG="en_GB.US-ASCII"
LC_COLLATE="en_GB.US-ASCII"
LC_CTYPE="en_GB.US-ASCII"
LC_MESSAGES="en_GB.US-ASCII"
LC_MONETARY="en_GB.US-ASCII"
LC_NUMERIC="en_GB.US-ASCII"
LC_TIME="en_GB.US-ASCII"
LC_ALL=

	


!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
AMIGA:amiga~/Desktop/Code/Shell> _

Now change encoding from terminal preferences to Western ASCII.
See photo 2.
And voila it works.

#!/bin/bash
echo ""
echo "Default encoding changed to ~ASCII via terminal preferences..."
locale
echo""
for N in {0..255}
do
	printf '\x'$( printf "%02x" "$N" )
done
echo ""

Runtime result:

Last login: Mon Jun 25 17:42:33 on ttys000
AMIGA:amiga~> cd ~/Desktop/Code/Shell
AMIGA:amiga~/Desktop/Code/Shell> ./ASCII_Coding.sh

Default encoding changed to ~ASCII via terminal preferences...
LANG="en_GB.US-ASCII"
LC_COLLATE="en_GB.US-ASCII"
LC_CTYPE="en_GB.US-ASCII"
LC_MESSAGES="en_GB.US-ASCII"
LC_MONETARY="en_GB.US-ASCII"
LC_NUMERIC="en_GB.US-ASCII"
LC_TIME="en_GB.US-ASCII"
LC_ALL=

	


!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~���������������������������*������������*����������������������������������������������������������������������������������
AMIGA:amiga~/Desktop/Code/Shell> _

Am I missing something with the soft-coded locale change as opposed to the terminal startup one?

Occasionally it's useful to lie about what your terminal is, i.e. LC_ALL="en_GB.US-ASCII" grep filename whatever to speed up grep when you know it won't matter. But changing the environment variable does not change your terminal. The terminal doesn't even have any way to know you changed it, being you changed it in the shell, not any place it has access to.

Thanks Corona688...

I thought that changing LANG would change the DEncoding for code inside a script.
Changing the DEncoding via the Terminal Preferences works a treat but that defeats the object of something I was experimenting with.
Back to the drawing board... <wink>