From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <a560a5d00810080358p59422919n7aa79574e2de6071@mail.gmail.com>
Date: Wed,  8 Oct 2008 12:58:26 +0200
From: "Rudolf Sykora" <rudolf.sykora@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@9fans.net>
In-Reply-To: <14ec7b180810071152i1dcdc311la333bfc3e737729d@mail.gmail.com>
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	<14ec7b180810071152i1dcdc311la333bfc3e737729d@mail.gmail.com>
Subject: Re: [9fans] environment + functions
Topicbox-Message-UUID: 18c441aa-ead4-11e9-9d60-3106f5b1d025

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>
> it's done this way, i believe, to ensure that two rc shells running in
> the same namespaces do not step all over each others' environments. if
> you simply run 'rfork e' before you experiment with all those
> functions you won't see the empty files anywhere.


Sorry, but I don't understand... Could you give me some example?


> last note: once you've deleted the function with the 'fn' builtin
> you're free to remove the corresponding file in /env: it won't matter
> anymore. i'm sure rc can be changed to delete the file.
>

So, if I continuously want to add and remove functions within one shell
(running hypothetically forever), do I have to 'manually' delete those empty
left-behind files? --- that is, not only use
fn name_that_I _don't_need
but also
rm /env/'fn#name_that_I _don't_need' ?

(I was playing with this to have a prompt that reflects the last part of my
current directory. Following the example of setting fn term% { $*} I,
whenever I change a directory, define a similar function with an appropriate
name. When I change the directory again I do the same for the new one, but
also want to get rid of the old one... -- actually in the opposite order.)

Ruda

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<div dir="ltr"><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">it&#39;s done this way, i believe, to ensure that two rc shells running in<br>

the same namespaces do not step all over each others&#39; environments. if<br>
you simply run &#39;rfork e&#39; before you experiment with all those<br>
functions you won&#39;t see the empty files anywhere.</blockquote><div>&nbsp;</div><div>Sorry, but I don&#39;t understand... Could you give me some example? <br>&nbsp;</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
last note: once you&#39;ve deleted the function with the &#39;fn&#39; builtin<br>
you&#39;re free to remove the corresponding file in /env: it won&#39;t matter<br>
anymore. i&#39;m sure rc can be changed to delete the file.<br>
</blockquote></div><br>So, if I continuously want to add and remove functions within one shell (running hypothetically forever), do I have to &#39;manually&#39; delete those empty left-behind files? --- that is, not only use <br>
fn name_that_I _don&#39;t_need<br>but also<br>rm /env/&#39;fn#name_that_I _don&#39;t_need&#39; ?<br><br>(I was playing with this to have a prompt that reflects the last part of my current directory. Following the example of setting fn term% { $*} I, whenever I change a directory, define a similar function with an appropriate name. When I change the directory again I do the same for the new one, but also want to get rid of the old one... -- actually in the opposite order.)<br>
<br>Ruda<br></div>

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