Thanks to Henri for the answer. To I admit, I thought it a bit technically that it would not be technically possible. At least I know why I was tearing my teeth while trying to test ... One more thanx. Jaroslav Hajtmar Dne 22.07.17 3:58, ntg-context za uživatele Henri napsal(a): On Fri, 2017-07-21 at 11:25 +0000, Jaroslav Hajtmar wrote: > Hello ConTeXist. > Is there any way to evaluate of contents of two macros as I am showing in my minimal example? > I know, that problem is in expansion, but I dont know to resolve it. > My minimal example consist of piece lua code, because I am solving my problem in mixed codes (TeX > & Lua) Something similar has been asked before and it is not possible. The interfaces.definecommand function defines a new macro using \protected\def. To compare as equal in a \doif context, both operands have to _expand_ to the same thing (here 123). Here \mymacro is not expandable and thus only \doifelse{\mymacro}{\mymacro} will ever compare true. Furthermore, scanning for optional arguments (i.e. [...]) is inherently non-expandable. To get something expandable you must at least switch to mandatory arguments (i.e. {...}). Still, using interfaces.definecommand will still not be possible. I believe that scanning arguments is better done on the macro level than in Lua, but that's just my opinion. > Thanx for help. > Jaroslav Hajtmar > > > \starttext > > \startluacode > interfaces.definecommand ("domymacro", { > arguments = { { "option", "string" } }, > macro = function (opt_1) > if #opt_1>0 then > context(opt_1) > else > context("123") > end > end > }) > interfaces.definecommand("mymacro", { > macro = function () > context.dosingleempty() > context["domymacro"]() > end > }) > \stopluacode > > \def\myothermacro{123} > > \hairline > > \mymacro[123] > > \mymacro > > \myothermacro > > \hairline > > \doifelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} > > \doifsamestringelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} > > \doifinstringelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} > > \doifincsnameelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} > > > \hairline > > \doifelse{\mymacro}{\myothermacro}{equal content}{not equal content} > > \doifsamestringelse{\mymacro}{\myothermacro}{equal content}{not equal content} > > \doifinstringelse{\mymacro}{\myothermacro}{equal content}{not equal content} > > \doifincsnameelse{\mymacro}{\myothermacro}{equal content}{not equal content} > > > > \stoptext > > > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________

Thanx Hans for reply. also, it depends on what you want to achieve ... maybe comparing macros is not needed at all You have right, that anytime compares are not needed, but for my very needed compares is not working in next eight examples. Problem is in expansions macros with optional argument. For “normal” macros are compares without problem as you see in last four examples…. mymacro \doifelse{\mymacro}{123}{equal content}{not equal content} \doifsamestringelse{\mymacro}{123}{equal content}{not equal content} \doifinstringelse{\mymacro}{123}{equal content}{not equal content} \doifincsnameelse{\mymacro}{123}{equal content}{not equal content} \hairline mymacro[123] \doifelse{\mymacro[123]}{123}{equal content}{not equal content} \doifsamestringelse{\mymacro[123]}{123}{equal content}{not equal content} \doifinstringelse{\mymacro[123]}{123}{equal content}{not equal content} \doifincsnameelse{\mymacro[123]}{123}{equal content}{not equal content} \hairline myothermacro \doifelse{\myothermacro}{123}{equal content}{not equal content} \doifsamestringelse{\myothermacro}{123}{equal content}{not equal content} \doifinstringelse{\myothermacro}{123}{equal content}{not equal content} \doifincsnameelse{\myothermacro}{123}{equal content}{not equal content} there is not that much benefit defining these at the lua end if you directly feed back into tex anyway sure, but I need define some macros automatically from luacode (is part of custom lua library) Thanx Jaroslav Hajtmar 22. 7. 2017 v 13:23, Hans Hagen mailto:pragma@wxs.nl>: On 7/22/2017 3:58 AM, Henri wrote: On Fri, 2017-07-21 at 11:25 +0000, Jaroslav Hajtmar wrote: Hello ConTeXist. Is there any way to evaluate of contents of two macros as I am showing in my minimal example? I know, that problem is in expansion, but I dont know to resolve it. My minimal example consist of piece lua code, because I am solving my problem in mixed codes (TeX & Lua) Something similar has been asked before and it is not possible. The interfaces.definecommand function defines a new macro using \protected\def. To compare as equal in a \doif context, both operands have to _expand_ to the same thing (here 123). Here \mymacro is not expandable and thus only \doifelse{\mymacro}{\mymacro} will ever compare true. Furthermore, scanning for optional arguments (i.e. [...]) is inherently non-expandable. To get something expandable you must at least switch to mandatory arguments (i.e. {...}). Still, using interfaces.definecommand will still not be possible. I believe that scanning arguments is better done on the macro level than in Lua, but that's just my opinion. also, it depends on what you want to achieve ... maybe comparing macros is not needed at all Thanx for help. Jaroslav Hajtmar \starttext \startluacode interfaces.definecommand ("domymacro", { arguments = { { "option", "string" } }, macro = function (opt_1) if #opt_1>0 then context(opt_1) else context("123") end end }) interfaces.definecommand("mymacro", { macro = function () context.dosingleempty() context["domymacro"]() end }) \stopluacode there is not that much benefit defining these at the lua end if you directly feed back into tex anyway \def\myothermacro{123} \hairline \mymacro[123] \mymacro \myothermacro \hairline \doifelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} \doifsamestringelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} \doifinstringelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} \doifincsnameelse{\mymacro}{\mymacro[123]}{equal content}{not equal content} \hairline \doifelse{\mymacro}{\myothermacro}{equal content}{not equal content} \doifsamestringelse{\mymacro}{\myothermacro}{equal content}{not equal content} \doifinstringelse{\mymacro}{\myothermacro}{equal content}{not equal content} \doifincsnameelse{\mymacro}{\myothermacro}{equal content}{not equal content} \stoptext ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nlmailto:ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________ ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nlmailto:ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________ -- ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nlhttp://www.pragma-ade.nl/ | www.pragma-pod.nlhttp://www.pragma-pod.nl/ ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nlmailto:ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nlhttp://www.pragma-ade.nl/ / http://context.aanhet.nethttp://context.aanhet.net/ archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.nethttp://contextgarden.net/ ___________________________________________________________________________________

On 7/23/2017 8:46 AM, Henri Menke wrote:

On 07/23/2017 05:55 PM, Jaroslav Hajtmar wrote:

...

Thanx Hans for reply.

...

also, it depends on what you want to achieve ... maybe comparing macros is not needed at all

You have right, that anytime compares are not needed, but for my very needed compares is not working in next eight examples. Problem is in expansions macros with optional argument. For “normal” macros are compares without problem as you see in last four examples….

Did you read my first reply? Scanning for optional arguments is _inherently_ unexpandable. Peeking ahead _always_ involves \futurelet which performs an assignment. This can _never_ be edef-expanded. indeed. fwiw, one can do some trickery with lua (read and push back) but even then you run into the fact that when reading a token expansion happens (so the expanded stuff is then in front)

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 -----------------------------------------------------------------