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From: Lars Ingebrigtsen <larsi@gnus.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: libnettle/libhogweed WIP
Date: Wed, 19 Apr 2017 16:16:39 +0200	[thread overview]
Message-ID: <m3wpag8ou0.fsf@stories> (raw)
In-Reply-To: <jwv60i0wpze.fsf-monnier+gmane.emacs.devel@gnu.org> (Stefan Monnier's message of "Wed, 19 Apr 2017 08:22:10 -0400")

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> Forcing your users to (de|en)code explicitly before calling your
> functions isn't making them jump through hoops: it's helping them have
> the correct mental model of what "multibyte text" means.

I agree.  While "just encrypt this string already" is a tempting thing
to be able to say, encryption doesn't really work on characters, but on
octet streams, so it turns into a head-scratcher when you get a weird
result.

But Emacs does have functions already that are rather... vague... about
what they do in this area and people seem to live with the ambiguity:

(base64-decode-string (base64-encode-string "Héllo"))
=> "H\351llo"

Which is...  correct?  But only if you know that the Emacs represents
non-ASCII strings as (approx.) UTF-8.

The less confusion in this area the better, and especially for
encryption functions where you really want to get the correct text back
again, I think it would be better, long-term, to not allow non-unibyte
text inputs.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no



  parent reply	other threads:[~2017-04-19 14:16 UTC|newest]

Thread overview: 128+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-20 10:00 How to ship native modules? Elias Mårtenson
2017-02-20 15:27 ` Eli Zaretskii
2017-02-20 16:01   ` Elias Mårtenson
2017-02-20 16:30     ` Eli Zaretskii
2017-02-21  2:48       ` Elias Mårtenson
2017-02-21  3:41         ` Eli Zaretskii
2017-02-21  4:13           ` Elias Mårtenson
2017-02-21 16:48             ` Eli Zaretskii
2017-02-21 20:06               ` John Wiegley
2017-02-21 14:44       ` Stefan Monnier
     [not found]         ` <CADtN0WLjNcFRLCsJNZX+XfqOcq+veTaoGkwHQCV9bjvuQoEORA@mail.gmail.com>
2017-02-21 15:48           ` Elias Mårtenson
2017-02-21 17:14             ` Stefan Monnier
2017-02-21 16:59         ` Eli Zaretskii
2017-03-02 14:59   ` request to reconsider libnettle/libhogweed (was: How to ship native modules?) Ted Zlatanov
2017-03-02 15:19     ` request to reconsider libnettle/libhogweed Stefan Monnier
2017-03-02 15:55     ` request to reconsider libnettle/libhogweed (was: How to ship native modules?) Eli Zaretskii
2017-03-15 21:19       ` libnettle/libhogweed WIP (was: request to reconsider libnettle/libhogweed) Ted Zlatanov
2017-03-16 15:28         ` Eli Zaretskii
2017-03-17 22:46           ` libnettle/libhogweed WIP Ted Zlatanov
2017-03-18  8:12             ` Eli Zaretskii
2017-03-20 18:45           ` Ted Zlatanov
2017-04-11 20:05           ` Ted Zlatanov
2017-04-14 20:48             ` Ted Zlatanov
2017-04-15  9:32               ` Eli Zaretskii
2017-04-15 14:27                 ` Ted Zlatanov
2017-04-15 14:55                   ` Eli Zaretskii
2017-04-16  2:39                     ` Ted Zlatanov
2017-04-16  6:25                       ` Eli Zaretskii
2017-04-16  6:51                       ` Eli Zaretskii
2017-04-17 16:23                         ` Ted Zlatanov
2017-04-17 16:34                           ` Eli Zaretskii
2017-04-17 16:55                             ` Ted Zlatanov
2017-04-17 17:11                               ` Eli Zaretskii
2017-04-17 17:34                                 ` Ted Zlatanov
2017-04-17 17:46                                   ` Ted Zlatanov
2017-04-17 18:11                                   ` Eli Zaretskii
2017-04-17 20:50                               ` Ted Zlatanov
2017-04-17 21:19                                 ` Noam Postavsky
2017-04-17 23:29                                   ` Ted Zlatanov
2017-04-19  2:08                                     ` Ted Zlatanov
2017-04-19  2:42                                       ` Noam Postavsky
2017-04-19 15:24                                       ` Davis Herring
2017-04-19 15:45                                       ` Eli Zaretskii
2017-04-20 17:24                                         ` Ted Zlatanov
2017-04-20 19:38                                           ` Eli Zaretskii
2017-04-20 20:24                                             ` Ted Zlatanov
2017-04-20 20:42                                               ` Lars Ingebrigtsen
2017-04-20 21:54                                                 ` Ted Zlatanov
2017-04-21  6:21                                                   ` Eli Zaretskii
2017-04-21 18:45                                                   ` Lars Ingebrigtsen
2017-04-21 19:15                                                     ` Eli Zaretskii
2017-04-21  6:14                                               ` Eli Zaretskii
2017-05-15 21:55                                                 ` Ted Zlatanov
2017-05-16 22:19                                                   ` Ted Zlatanov
2017-05-17 16:22                                                   ` Eli Zaretskii
2017-05-17 20:05                                                     ` Ted Zlatanov
2017-05-31 18:17                                                       ` Ted Zlatanov
2017-06-03  7:23                                                         ` Eli Zaretskii
2017-06-03  9:00                                                           ` Andreas Schwab
2017-06-03 10:01                                                             ` Eli Zaretskii
2017-06-03 10:09                                                               ` Andreas Schwab
2017-06-03 10:47                                                                 ` Eli Zaretskii
2017-06-27 22:58                                                           ` Ted Zlatanov
2017-06-28 16:54                                                             ` Eli Zaretskii
2017-06-28 19:44                                                               ` Ted Zlatanov
2017-07-13 18:35                                                                 ` Ted Zlatanov
2017-07-14 15:10                                                                   ` Ted Zlatanov
2017-07-14 19:04                                                                     ` Eli Zaretskii
2017-07-14 19:43                                                                       ` Ted Zlatanov
2017-07-14 20:04                                                                         ` Eli Zaretskii
2017-07-15 18:30                                                                           ` Ted Zlatanov
2017-07-15  9:15                                                                         ` Eli Zaretskii
2017-07-15 18:40                                                                           ` Ted Zlatanov
2017-07-15 19:12                                                                             ` Eli Zaretskii
2017-07-22  9:10                                                                               ` Eli Zaretskii
2017-07-26  6:58                                                                                 ` Ted Zlatanov
2017-07-26 14:52                                                                                   ` Eli Zaretskii
2017-07-26 15:34                                                                                     ` Ted Zlatanov
2017-07-26 15:49                                                                                       ` Eli Zaretskii
2017-07-26 16:08                                                                                         ` Ted Zlatanov
2017-07-26 18:51                                                                                           ` Eli Zaretskii
2017-07-26 20:48                                                                                             ` Ted Zlatanov
2017-07-27  0:19                                                                                   ` Paul Eggert
2017-07-27  2:34                                                                                     ` Eli Zaretskii
2017-07-27  4:36                                                                                       ` Paul Eggert
2017-07-27 15:56                                                                                         ` Ted Zlatanov
2017-08-03 19:52                                                                                           ` Ted Zlatanov
2017-08-03  8:02                                                                                         ` Paul Eggert
2017-08-03 16:49                                                                                           ` Eli Zaretskii
2017-04-18 17:44                                 ` Ted Zlatanov
2017-04-19 12:22                               ` Stefan Monnier
2017-04-19 13:38                                 ` Ted Zlatanov
2017-04-19 14:16                                 ` Lars Ingebrigtsen [this message]
2017-04-19 14:48                                   ` Stefan Monnier
2017-04-19 14:41                                 ` Eli Zaretskii
2017-04-19 14:54                                   ` Stefan Monnier
2017-04-19 15:31                                     ` Eli Zaretskii
2017-04-19 15:48                                   ` Ted Zlatanov
2017-04-19 16:49                                     ` Lars Ingebrigtsen
2017-04-19 17:24                                       ` Eli Zaretskii
2017-04-19 19:53                                         ` Stefan Monnier
2017-04-20  2:30                                           ` Eli Zaretskii
2017-04-20  3:36                                             ` Stefan Monnier
2017-04-20 15:46                                               ` Eli Zaretskii
2017-04-20 15:59                                                 ` Lars Ingebrigtsen
2017-04-20 16:24                                                   ` Eli Zaretskii
2017-04-20 17:25                                                     ` Stefan Monnier
2017-04-20 19:40                                                       ` Lars Ingebrigtsen
2017-04-20 20:31                                                         ` Eli Zaretskii
2017-04-20 19:58                                                       ` Eli Zaretskii
2017-04-20 20:36                                                         ` Eli Zaretskii
2017-04-20 17:14                                                 ` Stefan Monnier
2017-04-20 19:29                                                   ` Eli Zaretskii
2017-04-19 19:49                                       ` Stefan Monnier
2017-04-17 16:00                       ` rename STRING_SET_CHARS to STRING_SET_SIZE (was: libnettle/libhogweed WIP) Ted Zlatanov
2017-04-17 16:24                         ` rename STRING_SET_CHARS to STRING_SET_SIZE Eli Zaretskii
2017-04-17 16:29                         ` Stefan Monnier
2017-04-17 16:34                           ` Ted Zlatanov
2017-04-16  3:37                     ` libnettle/libhogweed WIP Stefan Monnier
2017-04-16  6:19                       ` Eli Zaretskii
2017-04-16 13:20                         ` Stefan Monnier
2017-04-16  7:47               ` Toon Claes
2017-03-02 17:58     ` request to reconsider libnettle/libhogweed Paul Eggert
2017-03-02 18:33       ` Ted Zlatanov
2017-02-20 15:33 ` How to ship native modules? Aurélien Aptel
2017-02-21  4:50 ` Andreas Politz
2017-02-21  5:12   ` Elias Mårtenson
2017-02-21  5:23     ` Andreas Politz

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