alias expansion inside the switch as appropriate. This is achieved by a
flag noalias which is turned on and off in as we parse. In the following
example [1] and [0] indicate the value of noalias.
[0] case <expr> in
[1] <lit> ) [0] <expr> ;;
[1] <lit> ) [0] <expr> ;;
...
[1] esac [0]
FreeBSD does:
[0] case <expr> in [1]
<lit> ) <expr> ;;
<lit> ) <expr> ;;
...
esac [0]
This handles the following shell script:
alias a=ls
case $1 in
a) echo a;
a;;
f) echo f;;
*) echo default;;
esac
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