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.
>
>
> 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 <pra...@wxs.nl <mailto:pra...@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.nl <mailto:ntg-context@ntg.nl> /
>>>> http://www.ntg.nl/mailman/listinfo/ntg-context
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>>>> ___________________________________________________________________________________
>>> ___________________________________________________________________________________
>>> If your question is of interest to others as well, please add an entry to
>>> the Wiki!
>>> maillist : ntg-context@ntg.nl <mailto:ntg-context@ntg.nl> /
>>> http://www.ntg.nl/mailman/listinfo/ntg-context
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>>> ___________________________________________________________________________________
>>
>>
>> --
>>
>> -----------------------------------------------------------------
>> Hans Hagen | PRAGMA ADE
>> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>> tel: 038 477 53 69 | www.pragma-ade.nl <http://www.pragma-ade.nl/> |
>> www.pragma-pod.nl <http://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.nl <mailto:ntg-context@ntg.nl> /
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>> webpage : http://www.pragma-ade.nl <http://www.pragma-ade.nl/> /
>> http://context.aanhet.net <http://context.aanhet.net/>
>> archive : https://bitbucket.org/phg/context-mirror/commits/
>> wiki : http://contextgarden.net <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
> ___________________________________________________________________________________
>
___________________________________________________________________________________
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/
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