Re: [Dev-luatex] variable
On 03/06/2018 03:29 AM, Hans Hagen wrote:
> On 3/6/2018 4:43 AM, Bruno Le Floch wrote:
>> On 03/05/2018 12:00 PM, Hans Hagen wrote:
>>> On 3/5/2018 5:08 PM, a...@linux.pl wrote:
Hello,
Anybody know how I can set variable in tex?
For example
\count10=20
\def\proste{To jest prosty napis}
a\directlua{tex.print(tex.count[10]+5)}b
a\directlua{tex.set("\proste","Trudne")}b
\proste
\bye
I need setup \proste definition to my own string
How I can read TeX variable \mynumber from lua
and set variable \mynumber on TeX but set in lua script.
>>>
>>> \starttext
>>>
>>> \newcount\MyCount \MyCount = 20
>>>
>>> \def\MyMacro{To jest prosty napis}
>>>
>>> a\directlua{tex.print(tex.getcount("MyCount")+5)}b
>>>
>>> a\directlua{token.set_macro("MyMacro","Trudne")}b
>>>
>>> \MyMacro
>>>
>>> \stoptext
>>>
>>>
>>
>> Interestingly, token.set_macro allows defining macros whose replacement
>> text has unbalanced braces.
>>
>> \directlua{token.set_macro("MyMacro", "\string{")}
>> \expandafter\show\MyMacro
>> \bye
>
> Indeed. No expansion and parsing is involved except for one level
> checking of catcodes and tokens.
>
> This function is mostly there for simple usage like storing a string or
> so (no support for parameters etc).
>
> A bit like:
>
> \edef\foo{\noexpand\scantextokens{\string{}}
> \edef\oof{\noexpand\scantextokens{\string}}}
>
> test \foo\bf bar\oof\ test
>
> Hans
>
Thank you for these details!
Best regards,
Bruno
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Re: [Dev-luatex] variable
On 3/6/2018 4:43 AM, Bruno Le Floch wrote:
On 03/05/2018 12:00 PM, Hans Hagen wrote:
On 3/5/2018 5:08 PM, a...@linux.pl wrote:
Hello,
Anybody know how I can set variable in tex?
For example
\count10=20
\def\proste{To jest prosty napis}
a\directlua{tex.print(tex.count[10]+5)}b
a\directlua{tex.set("\proste","Trudne")}b
\proste
\bye
I need setup \proste definition to my own string
How I can read TeX variable \mynumber from lua
and set variable \mynumber on TeX but set in lua script.
\starttext
\newcount\MyCount \MyCount = 20
\def\MyMacro{To jest prosty napis}
a\directlua{tex.print(tex.getcount("MyCount")+5)}b
a\directlua{token.set_macro("MyMacro","Trudne")}b
\MyMacro
\stoptext
Interestingly, token.set_macro allows defining macros whose replacement
text has unbalanced braces.
\directlua{token.set_macro("MyMacro", "\string{")}
\expandafter\show\MyMacro
\bye
Indeed. No expansion and parsing is involved except for one level
checking of catcodes and tokens.
This function is mostly there for simple usage like storing a string or
so (no support for parameters etc).
A bit like:
\edef\foo{\noexpand\scantextokens{\string{}}
\edef\oof{\noexpand\scantextokens{\string}}}
test \foo\bf bar\oof\ test
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
-
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Re: [Dev-luatex] variable
On 03/05/2018 12:00 PM, Hans Hagen wrote:
> On 3/5/2018 5:08 PM, a...@linux.pl wrote:
>> Hello,
>>
>> Anybody know how I can set variable in tex?
>>
>> For example
>>
>> \count10=20
>> \def\proste{To jest prosty napis}
>> a\directlua{tex.print(tex.count[10]+5)}b
>> a\directlua{tex.set("\proste","Trudne")}b
>> \proste
>> \bye
>>
>> I need setup \proste definition to my own string
>>
>> How I can read TeX variable \mynumber from lua
>> and set variable \mynumber on TeX but set in lua script.
>
> \starttext
>
> \newcount\MyCount \MyCount = 20
>
> \def\MyMacro{To jest prosty napis}
>
> a\directlua{tex.print(tex.getcount("MyCount")+5)}b
>
> a\directlua{token.set_macro("MyMacro","Trudne")}b
>
> \MyMacro
>
> \stoptext
>
>
Interestingly, token.set_macro allows defining macros whose replacement
text has unbalanced braces.
\directlua{token.set_macro("MyMacro", "\string{")}
\expandafter\show\MyMacro
\bye
Bruno
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Re: [Dev-luatex] variable
On 3/5/2018 5:08 PM, a...@linux.pl wrote:
Hello,
Anybody know how I can set variable in tex?
For example
\count10=20
\def\proste{To jest prosty napis}
a\directlua{tex.print(tex.count[10]+5)}b
a\directlua{tex.set("\proste","Trudne")}b
\proste
\bye
I need setup \proste definition to my own string
How I can read TeX variable \mynumber from lua
and set variable \mynumber on TeX but set in lua script.
\starttext
\newcount\MyCount \MyCount = 20
\def\MyMacro{To jest prosty napis}
a\directlua{tex.print(tex.getcount("MyCount")+5)}b
a\directlua{token.set_macro("MyMacro","Trudne")}b
\MyMacro
\stoptext
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-
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