# In a variable assignment, both the name and the equals sign must be entirely
# unquoted. Therefore, there is only one assignment below; the other words
# containing equals signs are command words.

abc=0
\abc=1 2>/dev/null
a\bc=2 2>/dev/null
abc\=3 2>/dev/null
a\bc\=4 2>/dev/null
'abc'=5 2>/dev/null
a'b'c=6 2>/dev/null
abc'='7 2>/dev/null
'abc=8' 2>/dev/null
"abc"=9 2>/dev/null
a"b"c=10 2>/dev/null
abc"="11 2>/dev/null
"abc=12" 2>/dev/null
[ "$abc" = 0 ]