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The following reply was made to PR bin/54764; it has been noted by GNATS.
From: Steffen Nurpmeso <steffen%sdaoden.eu@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, christos%netbsd.org@localhost
Subject: Re: bin/54764
Date: Mon, 16 Dec 2019 22:48:39 +0100
elo%foobox.net@localhost wrote in <20191216135224.74849821A@marmite.localnet>:
|Thank you for taking the time to look at the patch I submitted.
|> From: Steffen Nurpmeso <steffen%sdaoden.eu@localhost>
|> Date: Sat, 14 Dec 2019 23:40:51 +0100
|> POSIX says "unset or set to null", so assuming that NetBSD Mail
|> does not return NULL when doing "set folder=" (or "set folder")
|> the above needs an additional "&& *mf != '\0')" for POSIX.
|I had debated whether to qualify that conditional clause with the
|set-but-empty test, but ultimately decided not to do when I realised
|it would put the file-completion code's treatment of the 'folder'
|variable at odds with that of the mail client proper.
|Try this: invoke 'mail' whilst your working directory is other than
|your home directory. With 'folder' unset (and NULL), the 'folders'
|command will return 'No value set for "folder"'. But after any of
|'set folder', 'set folder=' or 'set folder=""' (all three of which
|set 'folder' to an empty string), the 'folders' command will list
|the contents of your _home_ directory.
That is not standardized behaviour. But it seems Unix V10 does it
like that, and BSD Mail introduced this behaviour in 1982 already!
Author: Kurt Shoens <kurt>
AuthorDate: 1982-03-15 09:43:52 -0800
Commit: Kurt Shoens <kurt>
CommitDate: 1982-03-15 09:43:52 -0800
Included Eric's branch changes to remove vax and vmunix
|As per the mail man page, 'If [the folder] name begins with a `/',
|mail considers it to be an absolute pathname; otherwise, the folder
|directory is found relative to your home directory.' That's true
|even if the name is a zero-length string. The client itself is
|making a distinction between NULL and set-but-empty, and I wanted
|the file-completion behaviour to mimic it.
|If I've misled myself by this argument, I'd be very grateful to be
|put right. In any case, even if I'm not persuaded to change my mind,
|I'm happy to accept the consensus regarding the patch.
|Thanks again for your interest.
Since POSIX mostly standardizes existing behaviour i think the
current POSIX wording is wrong, and you are right.
In fact i had to fix an according bug in my Mail clone, thanks for
that. Be warned you have been credited as elo, please ring
through if you want name/address/x changes, thank you. (Will be
included in next release in a few days already.)
--End of <20191216135224.74849821A@marmite.localnet>
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
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