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From: markus schnalke <>
Subject: [TUHS] Re: ed: multiple addresses (with semicolons)
Date: Fri, 08 Jul 2022 21:13:17 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>


thanks for your replies, Doug and Ken.

Unfortunately I wasn't able to find the ``Multics Condensed Guide''
on Can someone please provide a link?

Interrestingly, I discovered that qed had double quotes (") as a
comment command, which simply ignores the rest of the line. As far
as I know, there's no way to comment ed scripts. Why was that

In ex(1) the " comment command reappeared. I've always wondered
why it used this character for comments. Seems it comes from qed,
leaping over ed, but reappearing in ex.


[2022-07-08 09:01] Ken Thompson <>
> On Fri, Jul 8, 2022 at 6:24 AM Douglas McIlroy <>
> wrote:
>     The interpretation of a string of addresses separated by commas and/or
>     semicolons was already defined in the v1 man page for ed.
>     Ed was essentially a stripped-down version of Multics qed. The latter
>     was originally
>     written by Ken. Unfortunately the "Multics Condensed Guide" online at
> describes how strings of addresses were interpreted
>     only by canonical examples for the various editing requests.
>     I  have no specific memory of semicolons in qed. I have a vague
>     recollection that semicolons originated in ed, however you should put
>     no trust in this. Maybe Ken remembers.
>     Doug
> String of addresses was same for qed and ed.

  reply	other threads:[~2022-07-08 19:14 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-08 13:23 [TUHS] " Douglas McIlroy
2022-07-08 16:01 ` [TUHS] " Ken Thompson
2022-07-08 19:13   ` markus schnalke [this message]
2022-07-09  8:10     ` steve jenkin
2022-07-09  8:22       ` Rob Pike
2022-07-10  3:50         ` Jon Forrest
2022-07-10  9:25 ` Angelo Papenhoff
2022-07-10  9:59   ` Ralph Corderoy
  -- strict thread matches above, loose matches on Subject: below --
2022-07-11 17:30 Douglas McIlroy
2022-07-18 10:52 ` markus schnalke
2022-07-08 21:36 Douglas McIlroy
2022-07-11 14:40 ` markus schnalke
2022-07-08  7:47 [TUHS] " markus schnalke
2022-07-08  8:09 ` [TUHS] " markus schnalke

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