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Re: ksh autoloading
- X-seq: zsh-workers 3041
- From: Roderick Schertler <roderick@xxxxxxxxx>
- To: Zefram <zefram@xxxxxxxxxxxxxxxxx>
- Subject: Re: ksh autoloading
- Date: Thu, 27 Mar 1997 13:57:19 -0500
- Cc: zsh-workers@xxxxxxxxxxxxxxx (Z Shell workers mailing list)
- In-reply-to: Your message of "Thu, 27 Mar 1997 18:36:04 EST."
- References: <1424.199703271836@xxxxxxxxxxxxxxxxxxxxxxx>
- Sender: roderick@xxxxxxxxxx
On Thu, 27 Mar 1997 18:36:04 +0000 (GMT), Zefram <zefram@xxxxxxxxxxxxxxxxx> said:
> Roderick Schertler wrote:
>>
>> One of the nicest things about the ksh semantics are that you can define
>> the function plus run some initialization code. It sounds like your
>> patch will disallow that.
>
> Not at all. Using the zsh style, we can autoload a function foo from
> a file saying:
Well, of course, if the function is written knowing it could run under
ksh or zsh then it can be made to work. The problem is that a function
which was written in ksh style will suddenly stop working (on first
invocation).
> Remember that the zsh form of autoloading is the canonical one, to be
> preferred, and technically superior in some ways to the ksh semantics.
I don't see how the zsh behavior is superior, and I do see advantages to
the ksh behavior. I always figured it was an oversight/misunderstanding
on the part of pws, like the [16]ff business.
Consider a file which provides 3 tightly related functions and runs some
initialization code. I used such a think for directory stack handling
in ksh, eg. In ksh you link it to the 3 names. In zsh you have to do
some work. I can't think of a real example which zsh makes easier than
ksh.
> I think it's more important for self-modifying functions using the zsh
> style to work correctly than it is for ksh style functions with
> initialisation code to work exactly the way they do in ksh.
I wanted to be sure you knew you were breaking ksh compatibility. Since
you know and you still think it's right that's okay with me. I don't
feel strongly about the issue because there are workarounds. I used to
use these workarounds before zsh provided any ksh autoloading, I could
go back to using them if I found I needed to start using ksh again.
--
Roderick Schertler
roderick@xxxxxxxxx
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