[NTG-context] BUG REPORT: Italic Correction in ConTeXt LMTX

[NTG-context] BUG REPORT: Italic Correction in ConTeXt LMTX

[contact]

Hello,

I started using ConTeXt LMTX 2 days ago and after some initial testing I noticed an unexpected behavior regarding italic correction.

In short, I cannot seem to produce italic correction like I could in plain TeX or even LaTeX.

I've asked the question on TeX StackExchange and another user confirmed the suspicion in his answer. I would suggest you take a look at it because the formatting of the question and the answer is prettier than in this plain text email. Furthermore, a person who provided the answer already did some research. See the question here:

https://tex.stackexchange.com/questions/724568/how-to-invoke-italic-correction-in-context-lmtx

Here is what I observed:

Compare the kerning produced in between 'r' and 'p' in the word "airport" when italic correction is applied in plain TeX (compiled with `pdftex`) and in ConTeXt LMTX (compiled with `luametatex`). Here are the minimal working examples.

Plain TeX

```
airport (regular font)

{\it air\/}port (italic correction applied)

{\it air}port (no italic correction applied)
\bye
```

ConTeXt LMTX

```
\starttext
airport (regular font)

{\it air\/}port (italic correction applied)

{\it air}port (no italic correction applied)
\stoptext
```

Please confirm if this, in fact, is the issue/bug or if I am not approaching this correctly. I am brand new to ConTeXt, so it could be me. Thank you in advance!

Vladimir
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: BUG REPORT: Italic Correction in ConTeXt LMTX

[Bruce Horrocks]

> On 26 Aug 2024, at 19:32, contact@vladimirgrbic.com wrote:
> 
> Please confirm if this, in fact, is the issue/bug or if I am not approaching this correctly. I am brand new to ConTeXt, so it could be me. Thank you in advance!

It seems as though it used to work (see <https://www.mail-archive.com/ntg-context@ntg.nl/msg60905.html>) but not now, so I would assume it's a bug.

Your usage looks to be okay.

—
Bruce Horrocks
Hampshire, UK

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: BUG REPORT: Italic Correction in ConTeXt LMTX

[Hans Hagen]

On 8/26/2024 8:32 PM, contact@vladimirgrbic.com wrote:
> Hello,
> 
> I started using ConTeXt LMTX 2 days ago and after some initial testing I noticed an unexpected behavior regarding italic correction.
> 
> In short, I cannot seem to produce italic correction like I could in plain TeX or even LaTeX.
There are three ways:

the{\sl air\/}port

the{\em air}port

the{\sl\shapecorrection[right]air}port

% shape correction can be left right both

the first one doesn't work but is fixed in next upload (sometime this week)

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: BUG REPORT: Italic Correction in ConTeXt LMTX

[Vladimir Grbić]

Thank you all, I am looking forward to it being fixed.

Vladimir




On Tuesday, August 27th, 2024 at 03:07, Hans Hagen <j.hagen@xs4all.nl> wrote:

> 
> 
> On 8/26/2024 8:32 PM, contact@vladimirgrbic.com wrote:
> 
> > Hello,
> > 
> > I started using ConTeXt LMTX 2 days ago and after some initial testing I noticed an unexpected behavior regarding italic correction.
> > 
> > In short, I cannot seem to produce italic correction like I could in plain TeX or even LaTeX.
> 
> There are three ways:
> 
> the{\sl air\/}port
> 
> the{\em air}port
> 
> the{\sl\shapecorrection[right]air}port
> 
> % shape correction can be left right both
> 
> the first one doesn't work but is fixed in next upload (sometime this week)
> 
> Hans
> 
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive : https://github.com/contextgarden/context
> wiki : https://wiki.contextgarden.net
> ___________________________________________________________________________________
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: BUG REPORT: Italic Correction in ConTeXt LMTX

[Hans Hagen]

On 8/27/2024 5:20 PM, Vladimir Grbić wrote:
> Thank you all, I am looking forward to it being fixed.
keep in mind that there is no italic correction in open type fonts so we 
use (in lmtx) different trickery which is why we also have left 
correction; there is also some enabled 'autromatic' correction wrt 
punctuation after italic math

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: BUG REPORT: Italic Correction in ConTeXt LMTX

[Jim]

On Tue, Aug 27, 2024 at 09:07 (+0200), Hans Hagen wrote:

> On 8/26/2024 8:32 PM, contact@vladimirgrbic.com wrote:
>> Hello,

>> I started using ConTeXt LMTX 2 days ago and after some initial testing I
>> noticed an unexpected behavior regarding italic correction.

>> In short, I cannot seem to produce italic correction like I could in
>> plain TeX or even LaTeX.

> There are three ways:

> the{\sl air\/}port

> the{\em air}port

> the{\sl\shapecorrection[right]air}port

> % shape correction can be left right both

> the first one doesn't work but is fixed in next upload (sometime this week)

Hans (et al),

I'm a couple of days late to this party, but none of the above suggestions
give me any italic correction.  I updated my ConTeXt today, but the fact
that the first one doesn't work didn't surprise me, given your last
sentence.

However, since the second two don't work, can anyone speculate as to what I
might be doing wrong?  Or, did I somehow misinterpret what "There are three
ways:" means?

Thanks.
                                Jim
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: BUG REPORT: Italic Correction in ConTeXt LMTX

[Wolfgang Schuster]

Jim schrieb am 29.08.2024 um 21:19:
> Hans (et al),
> I'm a couple of days late to this party, but none of the above suggestions
> give me any italic correction.  I updated my ConTeXt today, but the fact
> that the first one doesn't work didn't surprise me, given your last
> sentence.
>
> However, since the second two don't work, can anyone speculate as to what I
> might be doing wrong?  Or, did I somehow misinterpret what "There are three
> ways:" means?

Italic correction is fixed (for \/ and \italiccorrection) but there 
hasn't been a new context release since then.

The \em variant didn't work because it inserts \/ (which was broken) at 
the end of the text.

Wolfgang

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: BUG REPORT: Italic Correction in ConTeXt LMTX

[Jim]

On Thu, Aug 29, 2024 at 23:04 (+0200), Wolfgang Schuster wrote:

> Jim schrieb am 29.08.2024 um 21:19:
>> Hans (et al),
>> I'm a couple of days late to this party, but none of the above suggestions
>> give me any italic correction.  I updated my ConTeXt today, but the fact
>> that the first one doesn't work didn't surprise me, given your last
>> sentence.

>> However, since the second two don't work, can anyone speculate as to what I
>> might be doing wrong?  Or, did I somehow misinterpret what "There are three
>> ways:" means?

> Italic correction is fixed (for \/ and \italiccorrection) but there hasn't
> been a new context release since then.

> The \em variant didn't work because it inserts \/ (which was broken) at the
> end of the text.

Thanks Wolfgang.

I read Hans' messages as saying the last two were currently working.
I will look forward to the next release.

                                Jim
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________