Allow for hyphenation in 'firstline' ConTeXt feature ?

Allow for hyphenation in 'firstline' ConTeXt feature ?

[josephcanedo]

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Dear all,


I use the nifty ‘firstline’ feature ConTeXt offers (using a larger font size, line mode, 1 line only) and I notice that the last word of the first line is never hyphenated even if doing so could reduce underful in the first line. From typo-fln.lua it looks like that’s expected as the decision to break the first line happens only at nodes which are not glyphs, disc_nodes or kern nodes. There is a comment saying it could be added some option to handle disc nodes. I’d be happy to add such option but do not have enough knowledge in nodes manipulation in luatex, especially those related to hyphenation. Would it be very difficult to add such option please ?


I post a MWE showing some extreme non real non sensible case, to double check that hyphenation is never performed.


\definefirstline[FirstLine][alternative=line, style=\tfd] % exegerate size


\starttext


% exagerated case as MWE


\setfirstline[FirstLine] A few words larger largestwordwordlongwordthatcouldbehyphenated bar bar. 
A few words larger largest word word foo bar word bar bar. A few words larger largest 
word word foo bar word bar bar. A few words larger largest word word foo bar word bar bar.


\stoptext



Thanks a lot,


Best regards


Joseph Canedo

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Re: Allow for hyphenation in 'firstline' ConTeXt feature ?

[Hans Hagen]

On 5/29/2016 11:40 AM, josephcanedo@gmail.com wrote:
> Dear all,
>
> I use the nifty ‘firstline’ feature ConTeXt offers (using a larger font
> size, line mode, 1 line only) and I notice that the last word of the
> first line is never hyphenated even if doing so could reduce underful in
> the first line. From typo-fln.lua it looks like that’s expected as the
> decision to break the first line happens only at nodes which are not
> glyphs, disc_nodes or kern nodes. There is a comment saying it could be
> added some option to handle disc nodes. I’d be happy to add such option
> but do not have enough knowledge in nodes manipulation in luatex,
> especially those related to hyphenation. Would it be very difficult to
> add such option please ?

depends on what one finds 'difficult' ... by now i can probably do most 
i want at that level in which difficult is replace by 'just takes time'; 
also, one needs to keep in mind that trickery like this also needs to 
cooperate with other mechanisms

i'll send you a file to test (no beta as i'm cleaning up some display math)

> I post a MWE showing some extreme non real non sensible case, to double
> check that hyphenation is never performed.
>
> \definefirstline[FirstLine][alternative=line, style=\tfd] % exegerate size
>
> \starttext
>
> % exagerated case as MWE
>
> \setfirstline[FirstLine] A few words larger
> largestwordwordlongwordthatcouldbehyphenated bar bar.
> A few words larger largest word word foo bar word bar bar. A few words
> larger largest
> word word foo bar word bar bar. A few words larger largest word word foo
> bar word bar bar.
>
> \stoptext
>
> Thanks a lot,
>
> Best regards
>
> Joseph Canedo
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
       tel: 038 477 53 69 | www.pragma-ade.com | 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 / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Allow for hyphenation in 'firstline' ConTeXt feature ?

[josephcanedo]

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Yes, I probably should have written ‘Would it be time consuming etc… ?’ :-)

In any case, I had a try to the test file, and it works very well.


Thanks for your very swift reply.


Best regards


Joseph Canedo





From: pragma@wxs.nl
Sent: ‎Sunday‎, ‎May‎ ‎29‎, ‎2016 ‎5‎:‎18‎ ‎PM
To: ntg-context@ntg.nl





On 5/29/2016 11:40 AM, josephcanedo@gmail.com wrote:
> Dear all,
>
> I use the nifty ‘firstline’ feature ConTeXt offers (using a larger font
> size, line mode, 1 line only) and I notice that the last word of the
> first line is never hyphenated even if doing so could reduce underful in
> the first line. From typo-fln.lua it looks like that’s expected as the
> decision to break the first line happens only at nodes which are not
> glyphs, disc_nodes or kern nodes. There is a comment saying it could be
> added some option to handle disc nodes. I’d be happy to add such option
> but do not have enough knowledge in nodes manipulation in luatex,
> especially those related to hyphenation. Would it be very difficult to
> add such option please ?

depends on what one finds 'difficult' ... by now i can probably do most 
i want at that level in which difficult is replace by 'just takes time'; 
also, one needs to keep in mind that trickery like this also needs to 
cooperate with other mechanisms

i'll send you a file to test (no beta as i'm cleaning up some display math)

> I post a MWE showing some extreme non real non sensible case, to double
> check that hyphenation is never performed.
>
> \definefirstline[FirstLine][alternative=line, style=\tfd] % exegerate size
>
> \starttext
>
> % exagerated case as MWE
>
> \setfirstline[FirstLine] A few words larger
> largestwordwordlongwordthatcouldbehyphenated bar bar.
> A few words larger largest word word foo bar word bar bar. A few words
> larger largest
> word word foo bar word bar bar. A few words larger largest word word foo
> bar word bar bar.
>
> \stoptext
>
> Thanks a lot,
>
> Best regards
>
> Joseph Canedo
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
       tel: 038 477 53 69 | www.pragma-ade.com | 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 / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

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

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________