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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Help parsing the language manual on Get'ing integers from Strings
Date: Mon, 21 Dec 2020 19:11:32 -0600
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"Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> wrote in message 
news:rrpqi1$kf5$1@dont-email.me...
> On 12/21/20 9:06 AM, Niklas Holsti wrote:
>>
>> I see, an "obsolescent feature" in RM J.2. I learn something new every 
>> day (I hope).
>
> Yes. I never worked with a system that required such substitutions, even 
> in 1984 when it was not an obsolescent feature, but as we can see, it's 
> important to be aware of them.

I believe that restriction had to do with certain keypunches. But hardly 
anyone used keypunches even in 1981. (The Unisaur computer that our CS 
compiler-construction class used still had a few keypunches, but they had 
mostly transitioned to terminals by that time. I think that was the last 
class to use the Unisaur; they just had installed some VAX 780s for research 
and they soon got some for student use as well. My first few programming 
classes at UW used the Unisaurs keypunches.) I think that requirement was 
obsolete by the time Ada was completed (it probably wasn't when the Ada 
design was started).

                                           Randy.