I'm not surprised at all. Double quoted strings are bad in some shells, as '$a' might be processed by the shell, not by perl, therefore, might result in a shell error.

$ perl -v

This is perl, v5.8.6 built for darwin-thread-multi-2level
(with 2 registered patches, see perl -V for more detail)

...

$ perl -e "$a = Class::; print $a"
syntax error at -e line 1, near "="
Execution of -e aborted due to compilation errors.
$ perl -e '$a = Class::; print $a'
Class

[download]

Update: inserted word 'some'

In reply to Re^4: ::'s role in strings by jhourcle
in thread ::'s role in strings by eff_i_g

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