directlua question

directlua question

[Hans van der Meer]

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I am trying to extract something from a string with a \directlua call, the last word of a string in case:

	\directlua{tex.print(string.match(“This is a string","%s%a$"))}

However, the %s%a are not working with the TeX-error “unfinished string near eof”. Obviously caused by the %’s.
How to get this working? \textpercent will not do, off course within Luacode.

dr. Hans van der Meer



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Re: directlua question

[Hans van der Meer]

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On 4 Dec 2018, at 13:29, Hans van der Meer <havdmeer@ziggo.nl> wrote:

> I am trying to extract something from a string with a \directlua call, the last word of a string in case:
> 
> 	\directlua{tex.print(string.match(“This is a string","%s%a$"))}
> 
> However, the %s%a are not working with the TeX-error “unfinished string near eof”. Obviously caused by the %’s.
> How to get this working? \textpercent will not do, off course within Luacode.

Also I tried to no avail

\begingroup\catcode`\%=12\relax\directlua{tex.print(string.match(“This is a string","%s%a$"))}\endgroup

dr. Hans van der Meer


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Re: directlua question

[Wolfgang Schuster]

Hans van der Meer schrieb am 04.12.18 um 13:29:
> I am trying to extract something from a string with a \directlua call, 
> the last word of a string in case:
> 
> \directlua{tex.print(string.match(“This is a string","%s%a$"))}
> 
> However, the %s%a are not working with the TeX-error “unfinished string 
> near eof”. Obviously caused by the %’s.
> How to get this working? \textpercent will not do, off course within 
> Luacode.

% = \letterpercent
$ = \letterdollar

You can also replace

   \directlua{tex.print(...)}

with

   \ctxlua{context(...)}

or

   \cldcontext{...}

Wolfgang
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