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bug#30626: 26.0.91; Crash when traversing a `stream-of-directory-files'

From: Michael Heerdegen
Subject: bug#30626: 26.0.91; Crash when traversing a `stream-of-directory-files'
Date: Sun, 26 May 2019 02:32:49 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Noam Postavsky <address@hidden> writes:

> >> > - stream-make should use cons instead of list (or maybe a struct?).
> >>
> >> I think cons would be ok.  Would a struct make things slower?
> A struct might be slower, and cons has the advantage that the print
> output is more readable for humans too.  E.g., with this code: [...]

I see no reason not to switch to cons.  Better readable, and less cons
garbage than with `list'.

Would you like to do this?

> >> > - stream-empty should just be a constant.
> >>
> >> Dunno if there are cases where this would be problematic, but I
> >> guess we
> >> could do this as well.
> I've done this in the patch below.  Passes all the tests, and I can't
> see why it would be problematic.

Looks good to me.  Also passes my tests (which are all my stream.el
uses, including el-search.el).

> > @Nicolas: Do you want us to care about this or do you want to have a
> > look yourself?  I don't want to hurry, I just don't want this to be
> > forgotten.  If you say you have time in four months, it's still ok.
> Not getting any response; I'll wait another week for comments and then
> push.

Ok, let's do this.



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