From: "Steve Johnson" <scj@yaccman.com>
To: "Lars Brinkhoff" <lars@nocrew.org>, "Warner Losh" <imp@bsdimp.com>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] Archaic yacc C grammar
Date: Sat, 03 Nov 2018 14:50:49 -0700 [thread overview]
Message-ID: <5af2ef1c292fc7cedddf2389a438e8c9ae86cd64@webmail.yaccman.com> (raw)
In-Reply-To: <7w5zxjg88e.fsf@junk.nocrew.org>
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One thing that was supported on PCC for many years was the ability to
generate GE/Honeywell 6-bit character constants, using the back quote
(`) character. I remember trying it in the late 80's on a shipping
Sun machine and seeing that it was still present in the grammar, and,
as nearly as I could remember, still produced the correct answer.
Steve
----- Original Message -----
From: "Lars Brinkhoff" <lars@nocrew.org>
To:"Warner Losh" <imp@bsdimp.com>
Cc:"Steve Johnson" <scj@yaccman.com>, "The Eunuchs Hysterical Society"
<tuhs@tuhs.org>
Sent:Tue, 30 Oct 2018 08:16:17 +0000
Subject:Re: [TUHS] Archaic yacc C grammar
Warner Losh wrote:
> Steve Johnson wrote:
> We actually had a pretty good system for making changes like
> that. First, we would change the compiler to accept both the old
and
> the new. Then we would produce a warning that on a particular date
> the old would no longer work. Then we made the old an error and
> printed a message about how to fix it.
>
> How long a transition period did you typically have?
I heard the V7 compiler still supports old B style initialization
"int x 42;". So in some cases, a really long time.
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next prev parent reply other threads:[~2018-11-03 22:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-28 21:34 Lars Brinkhoff
2018-10-29 3:00 ` Steve Johnson
2018-10-29 7:31 ` Lars Brinkhoff
2018-10-29 17:52 ` Steve Johnson
2018-10-29 18:37 ` Warner Losh
2018-10-30 8:16 ` Lars Brinkhoff
2018-11-03 21:50 ` Steve Johnson [this message]
2018-10-29 19:02 ` David
2018-10-30 22:01 ` Steve Johnson
2018-10-31 0:58 ` Larry McVoy
2018-10-31 13:49 ` Clem Cole
2018-11-03 22:14 ` Steve Johnson
2018-10-31 6:09 ` Lars Brinkhoff
2018-10-31 15:39 Noel Chiappa
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