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Re: Auto-update program cache feature

From: Eduardo Bustamante
Subject: Re: Auto-update program cache feature
Date: Thu, 4 Oct 2018 05:10:09 -0700

On Wed, Oct 3, 2018 at 11:20 PM Jeffrey Walton <address@hidden> wrote:
> How Bash achieves it is an implementation detail left to the experts.
> I made a few suggestions that don't seem to fit well. That's OK
> because Bash internals is not my area of expertise.

I think it's important to always consider the cost (in terms of
implementation complexity and maintenance) of a feature we request
from a free software program :)

> Architecturally each instance of Bash is an object could receive a
> "clear cache" message. How it is achieved does not matter to me. What
> is important is, the right thing is done to relieve users from the
> extra work for the common case.

This paragraph contradicts what you said earlier. You keep suggesting
that Bash should adopt this global message passing system where every
instance of the shell can broadcast messages to each other... that is
EXTREMELY complicated.

Anyways, I should've read the manual before replying to this email
thread. There's already a mechanism in place for what you want, it's
the `checkhash' shopt.

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