# [Dev-luatex] Cron <luatex at boekplan> /var/www/luatex.org/www/bin/luatex-svn

Hans Hagen pragma at wxs.nl
Thu Mar 1 09:47:42 CET 2012

```On 1-3-2012 00:18, Khaled Hosny wrote:
> On Wed, Feb 29, 2012 at 11:15:55PM +0100, Hans Hagen wrote:
>> On 29-2-2012 22:43, Khaled Hosny wrote:
>>> On Wed, Feb 29, 2012 at 10:28:24PM +0100, Cron Daemon wrote:
>>>> ------------------------------------------------------------------------
>>>> r4361 | khaled | 2012-02-29 20:13:40 +0100 (Wed, 29 Feb 2012) | 9 lines
>>>> Changed paths:
>>>>     M /trunk/source/texk/web2c/luatexdir/tex/mlist.w
>>>>
>>>> Rewrite get_delim_box()
>>>>
>>>> The older version was always returning a box larger than requested and
>>>> with some fonts (e.g. STIX Math) extensible \overbrace was too much
>>>> wider than it should. I tried debugging it but it was too much complex
>>>> doing many clever things. The rewrite is partly stolen from XeTeX one,
>>>> further improved and is much simpler and had no regressions AFAICT.
>>>
>>> I hope this won't break anything (I tested as much as I can), I didn't
>>> want to make such invasive changes but this one was irresistible :)
>>
>> if it breaks old time bordercase misuse in macro solutions we should
>> not bother too much (as long it's documented)
>
> It should improve things, no breakage is indented. LuaTeX's math code is
> a bit risky because there is no clear separation handling of old and new
> math fonts, I'd have liked of code for TFM fonts was separate and
> "frozen", but I think it is too late for that.

it is on the agenda to have a flag in the tfmtable for that so that
there can be branches for each case so if the old code is commented out
it can always be introduced again (unless we decide that luatex is
opentype math machinery only, which is unlikely as till now we want to
be old tex compatible too)

Hans

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