I know its considered bad practice to check for an empty string with something
like:
if [ "$STR" = "" ] ; then
but what shells do actually break with this, and under what conditions?
I was proposing someone change a test like that to
if [ "x$STR" = ] ; then
but someone has argued against this, saying he knows of no shell where the
former is not acceptable. I realise this issue is probably more of a problem
with older shells, but can anyone give me any examples of where the former will
break, but the latter will be ok?
--
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
Dave
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