GNU bug report logs - #30331
Neither Emacs nor Vim nor Nano handle ligature literal insertion well

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Package: emacs; Severity: wishlist; Reported by: Andrew Pennebaker <andrew.pennebaker@HIDDEN>; merged with #475, #36914; dated Fri, 2 Feb 2018 22:32:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.
Forcibly Merged 475 30331 36914. Request was from Lars Ingebrigtsen <larsi@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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 (message from Andrew Pennebaker on Fri, 2 Feb 2018 16:31:05 -0600)
Subject: Re: bug#30331: Neither Emacs nor Vim nor Nano handle ligature literal
 insertion well
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[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

  > However, traditional text editors
  > including Emacs, Vim, and Nano are evidently NOT able to handle a literal æ
  > rune insertion, and tend to raise a generic error message when the text
  > expander application attempts to insert this key.

I'd expect that Quail input methods could handle this for Emacs.  They
notice when you enter a' and convert it to á, so they could notice ae
and convert it to æ.

When you want separate a and e, you'd type another e.



-- 
Dr Richard Stallman
President, Free Software Foundation (https://gnu.org, https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)
Skype: No way! See https://stallman.org/skype.html.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#30331; Package emacs. Full text available.

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From: Eli Zaretskii <eliz@HIDDEN>
To: Andrew Pennebaker <andrew.pennebaker@HIDDEN>
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 (message from Andrew Pennebaker on Fri, 2 Feb 2018 16:31:05 -0600)
Subject: Re: bug#30331: Neither Emacs nor Vim nor Nano handle ligature literal
 insertion well
References: <CAHXt_SV2P_ieU+UNHx8QoGX9CfoT38BoO01u9Er4dVqqm2Bxyw@HIDDEN>
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> From: Andrew Pennebaker <andrew.pennebaker@HIDDEN>
> Date: Fri, 2 Feb 2018 16:31:05 -0600
> 
> I would really like convenient access to ligatures in my word processing software. Unfortunately, none of the
> major text editing applications appears to handle ligatures intelligently: Each of Emacs, Vim, Nano, MS Word,
> Google Drive, Libre Office, and InDesign type a dumb "ae" when the user presses the a and e keyboard keys,
> whereas historically this sequence is typically rendered with the ash æ rune.

I don't see how any text-based application could do that
automatically, since there are many cases where "ae" needs to be left
as literal 2 characters.  Just a few random examples:

  maestro
  Rafael
  (Joan) Baez

I think the right thing would be to have a special key sequence for
inserting ligatures, since the need for that is somewhat rare,
certainly more rare than the need to insert the characters literally.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#30331; Package emacs. Full text available.

Message received at 30331 <at> debbugs.gnu.org:


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From: Stephen Berman <stephen.berman@HIDDEN>
To: Alan Third <alan@HIDDEN>
Subject: Re: bug#30331: Neither Emacs nor Vim nor Nano handle ligature literal
 insertion well
References: <CAHXt_SV2P_ieU+UNHx8QoGX9CfoT38BoO01u9Er4dVqqm2Bxyw@HIDDEN>
 <20180202233821.GB9047@HIDDEN>
Date: Sat, 03 Feb 2018 00:58:51 +0100
In-Reply-To: <20180202233821.GB9047@HIDDEN> (Alan Third's
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On Fri, 2 Feb 2018 23:38:21 +0000 Alan Third <alan@HIDDEN> wrote:

> On Fri, Feb 02, 2018 at 04:31:05PM -0600, Andrew Pennebaker wrote:
>> I am able to work around this limitation in most applications by
>> configuring TextExpander (macOS, Windows) or autokey (Linux) to match the
>> keyboard sequence "ae" and replace this with "=C3=A6". This allows most =
UTF-8
>> compatible graphical software, from Web browsers to document editors, to
>> correctly insert =C3=A6 in place of ae. However, traditional text editors
>> including Emacs, Vim, and Nano are evidently NOT able to handle a litera=
l =C3=A6
>> rune insertion, and tend to raise a generic error message when the text
>> expander application attempts to insert this key.
>
> I=E2=80=99m not sure about the use of TextExpander as I=E2=80=99ve never =
heard of it
> before, but Emacs on macOS can handle the insertion of =C3=A6 using alt=
=E2=80=90=E2=80=99,
> but you might need to change the default binding of the alt key
> (https://www.emacswiki.org/emacs/EmacsForMacOS#toc30).
>
> Aside from that Emacs allows you to enter =C3=A6 using:
>
>     C-x 8 RET LATIN SMALL LETTER AE
>
> It=E2=80=99s a bit of a handful though, I know,=20

A somewhat smaller handful is `C-x RET e6' (mentioned, as is the above
Unicode name method, in the *Help* you get by typing `C-u C-x =3D' on the
character =C3=A6).

>                                         but you can enter all sorts of
> things:
>
>     =EF=AC=84 =EF=AC=81 =F0=9F=99=B2
>
> You should be able to configure abbrev-mode to automatically convert
> ae to =C3=A6.=20

You can also do that by using the norwegian-postfix input method
(entered by typing `C-x RET C-\ no TAB p TAB').

Steve Berman
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#30331; Package emacs. Full text available.

Message received at 30331 <at> debbugs.gnu.org:


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Date: Fri, 2 Feb 2018 23:38:21 +0000
From: Alan Third <alan@HIDDEN>
To: Andrew Pennebaker <andrew.pennebaker@HIDDEN>
Subject: Re: bug#30331: Neither Emacs nor Vim nor Nano handle ligature
 literal insertion well
Message-ID: <20180202233821.GB9047@HIDDEN>
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On Fri, Feb 02, 2018 at 04:31:05PM -0600, Andrew Pennebaker wrote:
> I am able to work around this limitation in most applications by
> configuring TextExpander (macOS, Windows) or autokey (Linux) to match the
> keyboard sequence "ae" and replace this with "æ". This allows most UTF-8
> compatible graphical software, from Web browsers to document editors, to
> correctly insert æ in place of ae. However, traditional text editors
> including Emacs, Vim, and Nano are evidently NOT able to handle a literal æ
> rune insertion, and tend to raise a generic error message when the text
> expander application attempts to insert this key.

I’m not sure about the use of TextExpander as I’ve never heard of it
before, but Emacs on macOS can handle the insertion of æ using alt‐’,
but you might need to change the default binding of the alt key
(https://www.emacswiki.org/emacs/EmacsForMacOS#toc30).

Aside from that Emacs allows you to enter æ using:

    C-x 8 RET LATIN SMALL LETTER AE

It’s a bit of a handful though, I know, but you can enter all sorts of
things:

    ffl fi 🙲

You should be able to configure abbrev-mode to automatically convert
ae to æ. Or maybe prettify symbols mode would do:

    http://www.modernemacs.com/post/prettify-mode/

Proper ligature support is purely a presentation issue, though, and
should happen automatically on software that supports it even if
you’re loading in text written in software that doesn’t.
-- 
Alan Third
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#30331; Package emacs. Full text available.

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Date: Fri, 2 Feb 2018 16:31:05 -0600
Message-ID: <CAHXt_SV2P_ieU+UNHx8QoGX9CfoT38BoO01u9Er4dVqqm2Bxyw@HIDDEN>
Subject: Neither Emacs nor Vim nor Nano handle ligature literal insertion well
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--f403045e6f90a4c66005644244fd
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hello,

I would really like convenient access to ligatures in my word processing
software. Unfortunately, none of the major text editing applications
appears to handle ligatures intelligently: Each of Emacs, Vim, Nano, MS
Word, Google Drive, Libre Office, and InDesign type a dumb "ae" when the
user presses the a and e keyboard keys, whereas historically this sequence
is typically rendered with the ash =C3=A6 rune.

I am able to work around this limitation in most applications by
configuring TextExpander (macOS, Windows) or autokey (Linux) to match the
keyboard sequence "ae" and replace this with "=C3=A6". This allows most UTF=
-8
compatible graphical software, from Web browsers to document editors, to
correctly insert =C3=A6 in place of ae. However, traditional text editors
including Emacs, Vim, and Nano are evidently NOT able to handle a literal =
=C3=A6
rune insertion, and tend to raise a generic error message when the text
expander application attempts to insert this key. This may be a result of a
conflict between shell encodings (need UTF-8 everywhere, though I'm
currently typing this with a bare Windows COMSPEC command prompt session).
In any case, it stinks that the user cannot easily insert ligatures into
text editors, so copying & pasting from Wikipedia via the OS clipboard
appears to be one of the more (in)convenient options for accessing
ligatures. We can do better!

--=20
Cheers,
Andrew

--f403045e6f90a4c66005644244fd
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hello,<br><br>I would really like convenient access t=
o ligatures in my word processing software. Unfortunately, none of the majo=
r text editing applications appears to handle ligatures intelligently: Each=
 of Emacs, Vim, Nano, MS Word, Google Drive, Libre Office, and InDesign typ=
e a dumb &quot;ae&quot; when the user presses the a and e keyboard keys, wh=
ereas historically this sequence is typically rendered with the ash =C3=A6 =
rune.<br><br></div>I am able to work around this limitation in most applica=
tions by configuring TextExpander (macOS, Windows) or autokey (Linux) to ma=
tch the keyboard sequence &quot;ae&quot; and replace this with &quot;=C3=A6=
&quot;. This allows most UTF-8 compatible graphical software, from Web brow=
sers to document editors, to correctly insert =C3=A6 in place of ae. Howeve=
r, traditional text editors including Emacs, Vim, and Nano are evidently NO=
T able to handle a literal =C3=A6 rune insertion, and tend to raise a gener=
ic error message when the text expander application attempts to insert this=
 key. This may be a result of a conflict between shell encodings (need UTF-=
8 everywhere, though I&#39;m currently typing this with a bare Windows COMS=
PEC command prompt session). In any case, it stinks that the user cannot ea=
sily insert ligatures into text editors, so copying &amp; pasting from Wiki=
pedia via the OS clipboard appears to be one of the more (in)convenient opt=
ions for accessing ligatures. We can do better!<br clear=3D"all"><div><div>=
<div><br>-- <br><div class=3D"gmail_signature"><div dir=3D"ltr"><div><div><=
/div>Cheers,<div>Andrew</div></div></div></div>
</div></div></div></div>

--f403045e6f90a4c66005644244fd--
Acknowledgement sent to Andrew Pennebaker <andrew.pennebaker@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#30331; Package emacs. Full text available.
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