Broken parse on `'${'`

[Eric Blake]

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According to Lev Bishop on 7/7/2005 9:50 PM:
>>bash$ echo `echo '${'`
>>
> 
> Actually, this is a bad example, because even if bash did parse
> correctly, there would be still an incomplete ${ substitution for the
> outer echo

No, because by POSIX XCU 2.6.3, "The results of command substitution shall
not be processed for further tilde expansion, parameter expansion, command
substitution, or arithmetic expansion."  So the outer echo should behave
the same as if it had been invoked "echo \$\{", and print ${.

- --
Life is short - so eat dessert first!

Eric Blake             ebb9@byu.net
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