[tex-live] LuaTeX 0.80: Non-discretionary \discretionary

[Joseph Wright]

Hello all,

With example

    \tracingoutput=1 %
    \showboxdepth=\maxdimen
    \showboxbreadth=\maxdimen
    1-world
    \bye

and LuaTeX 0.79 I get in the log the expected

    ...\tenrm 1
    ...\tenrm -
    ...\tenrm w
    ...\kern-0.27779
    ...\tenrm o
    ...\tenrm r
    ...\tenrm l
    ...\tenrm d

whereas with Tl'15 pretest LuaTeX 0.80 I get

    ...\tenrm 1
    ...\tenrm -
    ...\discretionary
    ...\tenrm w
    ...\kern-0.27779
    ...\tenrm o
    ...\tenrm r
    ...\tenrm l
    ...\tenrm d

Here "-" isn't a hyphenation point as 1 is not a letter.

Is this change deliberate?
--
Joseph Wright