Hello,
LuaTeX doesn't seem to open an editor when given 'e' in response to for example the 'Undefined control sequence' prompt. I see this in both MiKTeX and TeX Live, so suspect it's an issue/decision at the LuaTeX end. Is this deliberate, or is it a bug?
I think calledit() was discarded in LuaTeX, because it was commented out in ptexlib.h: /* extern void calledit (); */ Best regards, Akira KAKUTO
