Hi, I noticed that recent LuaMetaTeX versions treats control sequences defined using token.set_lua with `value` or `condition` as frozen and does not allow redefining them. Given that these are not macros, we also can't "unfreeze" them using \unletfrozen. 1. Would it be possible to add a variant of Lua value and condition control sequences that are not frozen? 2. Also is there some way to disable the \frozen restrictions altogether? Maybe \suppressfrozenerror? 3. I also noticed that `token.set_lua` is not affected by control sequences being frozen. Therefore it allows redefining frozen control sequences which seems inconsistent. Best regards, Marcel
On 8/25/2020 3:59 PM, Marcel Fabian Krüger wrote:
Hi,
I noticed that recent LuaMetaTeX versions treats control sequences defined using token.set_lua with `value` or `condition` as frozen and does not allow redefining them. Given that these are not macros, we also can't "unfreeze" them using \unletfrozen.
1. Would it be possible to add a variant of Lua value and condition control sequences that are not frozen?
2. Also is there some way to disable the \frozen restrictions altogether? Maybe \suppressfrozenerror?
3. I also noticed that `token.set_lua` is not affected by control sequences being frozen. Therefore it allows redefining frozen control sequences which seems inconsistent. It's all on purpose. Btw, these mechanisms are very experimental (and undocumented and might to evolve).
Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------
On Tue, Aug 25, 2020 at 04:48:27PM +0200, Hans Hagen wrote:
I noticed that recent LuaMetaTeX versions treats control sequences defined using token.set_lua with `value` or `condition` as frozen and does not allow redefining them. Given that these are not macros, we also can't "unfreeze" them using \unletfrozen.
1. Would it be possible to add a variant of Lua value and condition control sequences that are not frozen?
2. Also is there some way to disable the \frozen restrictions altogether? Maybe \suppressfrozenerror?
3. I also noticed that `token.set_lua` is not affected by control sequences being frozen. Therefore it allows redefining frozen control sequences which seems inconsistent. It's all on purpose. Btw, these mechanisms are very experimental (and undocumented and might to evolve).
I know, but they are fun to play with. Especially the `value` kind was one of the most important things I always missed in LuaTeX. Marcel
participants (2)
-
Hans Hagen -
Marcel Fabian Krüger