So it seems it was there in Perl 1.000. 
 /* for "cond .. cond" we set up for the initial check */
    if (arg->arg_type == O_FLIP)
        context |= 4;

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But I recall the ... (three dots) operator was added much later.

In reply to Re: Perl history: when did Perl get a range operator? by Anonymous Monk
in thread Perl history: when did Perl get a range operator? by Anonymous Monk

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