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From: =?UTF-8?Q?Arne_Vajh=C3=B8j?= <arne@vajhoej.dk>
Newsgroups: comp.os.vms
Subject: Re: SDL, SDLC, PL/I (was Re: VMS Pascal article)
Date: Sat, 4 Jan 2025 14:54:26 -0500
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In-Reply-To: <vlc1bf$jdp1$1@dont-email.me>

On 1/4/2025 2:14 PM, Stephen Hoffman wrote:
> On 2025-01-03 14:30:37 +0000, Robert A. Brooks said:
>> On 1/3/2025 7:59 AM, Arne Vajhøj wrote:
>>> On 1/2/2025 10:48 PM, Robert A. Brooks wrote:
>>>> On 1/2/2025 10:32 PM, Arne Vajhøj wrote:
>>>>> I thought it was PL/I. Which is why I asked.
>>>>
>>>> Rewritten in the early 2000's.
>>>
>>> Ah. So it was rewritten for Itanium instead of being AEST'ed.
>>>
>>> I wonder whether it was because someone at HP decided to do the right 
>>> thing or because AEST couldn't handle it.
>>
>> I am not aware of an attempt to AEST it; it was rewritten by Walter 
>> Breu (sp?) of HP Germany.  He was not in VMS Engineering, so I wasn't 
>> paying a lot of attention when he was doing the work.
>>
>> Pretty sure it was part of the "get rid of all PL/I" initiative.
> 
> That's basically correct, yes. And Walter Breu was the author of the 
> SDLC port and of some related updates. One of the goals of that SDLC 
> port was character-level-formatting compatibility with the PL/I version 
> of the SDL tool; matching DIFF'ing.
> 
> Various factors that triggered this port including the transition of PL/ 
> I to Uniprise and later Kednos — and particularly the lack of a PL/I 
> compiler on Itanium — and caused an interest in reducing the usage of 
> PL/I within OpenVMS. MONITOR was the biggest existing user of PL/I.

Walter Braeu

I tried installing 2.3 on VMS Alpha.

And the installation procedure attempts to send an
email to him at hp.com.

Unusual!

Arne