bash style guide- an example where it makes a difference

gistfile1.txt

WITH_NEWLINE="line with newline
"
WITHOUT_NEWLINE="line without newline"

echo $WITH_NEWLINE
echo $WITHOUT_NEWLINE
echo "The above have matching newlines- you would expect that they should not"

echo "${WITH_NEWLINE}"
echo "${WITHOUT_NEWLINE}"
echo "The above don't have matching newlines, which is correct."

Output:
```
Users/jmound$ WITH_NEWLINE="line with newline
> "
Users/jmound$ WITHOUT_NEWLINE="line without newline"
Users/jmound$ 
Users/jmound$ echo $WITH_NEWLINE
line with newline
Users/jmound$ echo $WITHOUT_NEWLINE
line without newline
Users/jmound$ echo "The above have matching newlines- you would expect that they should not"
The above have matching newlines- you would expect that they should not
Users/jmound$ 
Users/jmound$ echo "${WITH_NEWLINE}"
line with newline

Users/jmound$ echo "${WITHOUT_NEWLINE}"
line without newline
Users/jmound$
```
The above commands don't exit with matching newlines, which is correct.