nuking `

[arnold@cc.gatech.edu (Arnold Robbins)]

Greetings all.

I'd like to suggest that es replace `{....} with ${...}.  $ means value
of a variable, and `{} means value of running the code, so I think it's
more uniform to use ${...}.

David Korn introduced $(...) to replace `...`, largely because of quoting
issues, but I find it very mnemonic: (...) runs stuff in a subshell,
and $(..) runs stuff in a subshell and returns the result.  I think the
same simplification could be applied to good end in es.  Espcially since
braces tie chunks of code together.

Those who want:

	; {x} = foo
	; echo ${x}
	foo

could instead do like rc

	; echo $'{x}'
	foo

(Please put aside any prejudices against bloat in ksh and just consider
the syntactic and learning-curve/readability issues for es.)

Arnold