From: Rob Pike <robpike@gmail.com>
To: Sven Mascheck <mascheck@in-ulm.de>
Cc: TUHS main list <tuhs@minnie.tuhs.org>
Subject: Re: [TUHS] v7 source code for sh
Date: Sun, 20 Feb 2022 10:34:40 +1100 [thread overview]
Message-ID: <CAKzdPgz_ArNeKzDq5U-VJk5NYTC=zNcFXdMAgx83J5eQCfqe-Q@mail.gmail.com> (raw)
In-Reply-To: <4a8c1f33-ab34-7f5d-321a-a8d759eee7c8@in-ulm.de>
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Terminal editing was done in general on the Blit and follow-on systems.
That's primarily why the Research shells didn't do it.
But history (ha!) chose another path.
-rob
On Sun, Feb 20, 2022 at 10:20 AM Sven Mascheck <mascheck@in-ulm.de> wrote:
> On 19.02.2022 23:39, John Cowan wrote:
>
> On Sat, Feb 19, 2022 at 1:45 PM Rob Pike <robpike@gmail.com> wrote:
>
>
>> I undid all the macros for the v8 shell, with Steve's blessing, before
>> doing the key work on that shell. But no one outside cared about any of the
>> research Unixes after v7,
>>
>
> Lots of us would have loved to care about them and were sad that we
> couldn't until they were open sourced much later.
>
>
> 8th ed sh (about '84) brought quite a few changes and fixes. Just naming a
> few:
> - environment variable HISTORY, pointing to a writable file, providing a
> history mechanism by means of "=(1)"
> - type is replaced by whatis, which produces output that can be
> re-evaluated by the shell
> - functions can be exported, in the same ways like variables
>
> keyword history: I always imagined that the Bourne shell would have been
> in much wider use even nowadays, if only it had provided line editing and a
> history at some point. Why not? Even Kenneth Almquist released his
> SVR4-like reimplementation intentionally without history. All that might
> have been implemented more elegant directly in the terminal I/O instead of
> in every program? (that is, not in a MS-DOS-like way, where every program
> even needs its own pager).
>
> I still wonder if it would be possible to properly provide line editing
> and history in the terminal I/O in general.
>
> Sven
>
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next prev parent reply other threads:[~2022-02-19 23:37 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-19 17:44 Bakul Shah
2022-02-19 18:44 ` Rob Pike
2022-02-19 19:29 ` Clem Cole
2022-02-19 22:39 ` John Cowan
2022-02-19 23:11 ` Sven Mascheck
2022-02-19 23:34 ` Rob Pike [this message]
2022-02-19 23:36 ` silas poulson
2022-02-20 20:54 ` Chet Ramey
2022-02-20 21:02 ` Larry McVoy
2022-02-20 21:19 ` Chet Ramey
2022-02-20 21:19 ` Lyndon Nerenberg (VE7TFX/VE6BBM)
2022-02-20 22:39 ` Chet Ramey
2022-02-21 1:01 ` Dan Cross
2022-02-22 4:54 ` Dan Stromberg
2022-02-22 5:39 ` Rob Pike
2022-02-22 5:54 ` George Michaelson
-- strict thread matches above, loose matches on Subject: below --
2022-02-22 3:07 Brian Walden
2022-02-22 14:28 ` Chet Ramey
2022-02-22 14:47 ` Clem Cole
2022-02-21 17:58 Norman Wilson
2022-02-21 18:10 ` Rob Pike
2022-02-20 7:24 Rudi Blom
2022-02-19 15:43 Will Senn
2022-02-19 16:03 ` Steve Nickolas
2022-02-19 16:07 ` Clem Cole
2022-02-19 16:43 ` Steve Nickolas
2022-02-19 17:24 ` Ron Natalie
2022-02-19 16:04 ` Clem Cole
2022-02-19 16:06 ` Bakul Shah
2022-02-19 16:57 ` Will Senn
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