# [Dev-luatex] letterspacing and (no) ligatures

Taco Hoekwater taco at elvenkind.com
Thu Feb 10 18:58:16 CET 2011

On 10 feb. 2011, at 15:18, Robert <w.m.l at gmx.net> wrote:

> On 10.02.11 06:25, Taco Hoekwater wrote:
>> I've created a tracker item, but I am not sure yet whether either of
>> them is actually a bug or simply a incompatibility.
>
> I would call it an incompatibility bug ;-)
>
> As others have noted, some ligatures in letterspaced text shouldn't be broken. If \letterspacefont now disables all ligatures, this is no longer possible except by changing the font for each and every such ligature (and even for "--", "<<" etc.). This renders \letterspacefont basically useless.
>
That is a convincing argument, i will try to fix \letterspacefont

> And to consider the fact that \tagcode and \pdfnoligatures are virtually no-ops as an incompatibility sounds like a strong euphemism to me...
>
This is a different matter, i suspect that these primitives can only be
Made to work with legacy fonts. Which would be an acceptable
Compromise, i guess

Best wishes,
Taco