[NTG-context] Allow for hyphenation in 'firstline' ConTeXt feature ?

Hans Hagen pragma at wxs.nl
Sun May 29 17:18:53 CEST 2016

On 5/29/2016 11:40 AM, josephcanedo at 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
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                                           Hans Hagen | PRAGMA ADE
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