Sean,
I saw that you'd conceded that it's half one half the other
That's not where I conceded that it's half of each. Assigning a
variable for a newline is of benefit if you're going to be using it at
least twice.
I'm saying that defining and then using $NL is actually less error
prone than not.
That's what I question. In giving someone else a short snippet of code
that requires a literal newline in quotes exactly once, there's roughly
equal risk of the reader's messing this up:
# warning warning warning
NL='
'
# warning warning warning
other code "$NL" other code
... as there is that (s)he'll mess this up:
# warning warning warning
other code '
' other code
# warning warning warning
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