[bug #65232] Russian hyphenation is not working

[G. Branden Robinson]

Update of bug#65232 (group groff):

                  Status:               Need Info => Invalid                
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #4:


[comment #3 comment #3:]
> After switching from pdfroff (-Tps) to pdfmom (-Tpdf), hyphenation suddenly
works fine.

Glad to hear it.
 
> Moreover, it will even work with UTF8 input (-Kutf-8), even though that
causes other glitches.

What glitches are you seeing?

> I have no idea way it can hyphenate Unicode escapes.

The input is coverted from UTF-8 to KOI8-R.  The hyphenation patters are
defined in terms of KOI8-R code points.  The formatter (GNU _troff_) decides
where the hyphens should go and performs the breaks.  The formatter converts
the input characters into internal data structures called "nodes" that do not
use an externally visible encoding.  Then, when generating device-independent
output, each glyph nodes is converted to a device-independent special
character command _if_ the output device supports its code point.  (If it
doesn't, you get a warning like "special character 'u0413' not defined".)

> pdfroff should perhaps be marked as deprecated or pdfmom should outright
replace it.

We are pondering that notion in bug #63827.  Would you like to be added to the
CC list of that ticket?
 
> From my perspective, you can close this ticket.

Thanks for following up!  Closing.


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