Broken parse on `'${'`

[Lev Bishop]

On 07/07/05, Eric Blake wrote:

> zsh$ bash
> bash$ echo `echo '${'`
> >
> # Hmm - I was just incorrectly presented PS2, asking to try to continue
> what bash thought was an incomplete ${ variable substitution

Actually, this is a bad example, because even if bash did parse
correctly, there would be still an incomplete ${ substitution for the
outer echo

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