Re: [NTG-context] active strings in luatex?

if i know the precise specs i can build it into the utf collapser

I can work that out for you, but we need to think about how to treat all this consistently, in particular with respect to the questions Mojca raised: · Equivalent sequences need to be treated the same way (c + combining caron == ccaron). · If we need to compose a glyph out of other glyphs, it may be accounted for by some OpenType feature (in particular GPOS 'mark' and 'mkmk'). · If nothing else is available, the good ol' TeX way using \accent is still valid, but we need to preserve the original Unicode data in the PDF (for searching, etc.). Arthur