lpeg pattern in function

lpeg pattern in function

[Marcus Vinicius Mesquita via ntg-context]

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Dear list,
in the mwe below, the expected result is ok for most entries but fails when
the word contains the letters ó or ô.
We get zoolco instead of zoológico, and termtro instead of termômetro. What
am I doing wrong?

mwe:

\def\stripnumber#1%
        {\cldcontext{lpeg.match(lpeg.stripper("[¹²³⁴⁵⁶⁷⁸⁹⁰]"), [==[#1]==])}}

\starttext

\stripnumber{árbitro⁶}
\stripnumber{ébano¹}
\stripnumber{ícone⁸}
\stripnumber{zoológico⁰}
\stripnumber{eletroacústico⁹}
\stripnumber{trânsfuga⁷}
\stripnumber{farmacêutico¹}
\stripnumber{maître²}
\stripnumber{termômetro³}
\stripnumber{noûs⁴}

\stoptext
-- 
Todas as coisas fatigam o corpo, salvo a música, que não fatiga nem o corpo
nem seus membros, por ser descanso da alma, primavera do coração, distração
do aflito, entretenimento do solitário, e viático do viajante.

Kunnâsh al-Hâ'ik (Cancioneiro de al-Hâ'ik)

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Re: lpeg pattern in function

[Hans Hagen via ntg-context]

On 8/6/2021 10:58 PM, Marcus Vinicius Mesquita via ntg-context wrote:
> Dear list,
> in the mwe below, the expected result is ok for most entries but fails 
> when the word contains the letters ó or ô.
> We get zoolco instead of zoológico, and termtro instead of termômetro. 
> What am I doing wrong?
> 
> mwe:
> 
> \def\stripnumber#1%
>          {\cldcontext{lpeg.match(lpeg.stripper("[¹²³⁴⁵⁶⁷⁸⁹⁰]"), 
> [==[#1]==])}}
> 
> \starttext
> 
> \stripnumber{árbitro⁶}
> \stripnumber{ébano¹}
> \stripnumber{ícone⁸}
> \stripnumber{zoológico⁰}
> \stripnumber{eletroacústico⁹}
> \stripnumber{trânsfuga⁷}
> \stripnumber{farmacêutico¹}
> \stripnumber{maître²}
> \stripnumber{termômetro³}
> \stripnumber{noûs⁴}
> 
> \stoptext


\def\stripnumber#1%
   {\cldcontext{lpeg.match(lpeg.stripper(lpeg.US("¹²³⁴⁵⁶⁷⁸⁹⁰")), 
[==[#1]==])}}

(US -> utf set) 	

or

\startluacode
     local s = lpeg.stripper(lpeg.US("¹²³⁴⁵⁶⁷⁸⁹⁰"))
     function document.StripNumber(str)
         context(lpeg.match(s, str))
     end
\stopluacode

\def\stripnumber#1{\ctxlua{document.StripNumber([==[#1]==])}}

or you can go fancy:

\startluacode
     local p_strip = lpeg.stripper(lpeg.US("¹²³⁴⁵⁶⁷⁸⁹⁰"))

     interfaces.implement {
         name      = "StripNumber",
         public    = true,
         arguments = "string",
         actions   = function(str)
             context(lpeg.match(p_strip, str))
         end
     }
\stopluacode

\StripNumber{zoológico⁰}

There are more efficient variants but i guess it's good enough.

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
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

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___________________________________________________________________________________

Re: lpeg pattern in function

[Marcus Vinicius Mesquita via ntg-context]

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Thank you, Hans. Very nice indeed your solutions.

Marcus Vinicius

On Sat, Aug 7, 2021 at 5:37 AM Hans Hagen <j.hagen@xs4all.nl> wrote:

> On 8/6/2021 10:58 PM, Marcus Vinicius Mesquita via ntg-context wrote:
> > Dear list,
> > in the mwe below, the expected result is ok for most entries but fails
> > when the word contains the letters ó or ô.
> > We get zoolco instead of zoológico, and termtro instead of termômetro.
> > What am I doing wrong?
> >
> > mwe:
> >
> > \def\stripnumber#1%
> >          {\cldcontext{lpeg.match(lpeg.stripper("[¹²³⁴⁵⁶⁷⁸⁹⁰]"),
> > [==[#1]==])}}
> >
> > \starttext
> >
> > \stripnumber{árbitro⁶}
> > \stripnumber{ébano¹}
> > \stripnumber{ícone⁸}
> > \stripnumber{zoológico⁰}
> > \stripnumber{eletroacústico⁹}
> > \stripnumber{trânsfuga⁷}
> > \stripnumber{farmacêutico¹}
> > \stripnumber{maître²}
> > \stripnumber{termômetro³}
> > \stripnumber{noûs⁴}
> >
> > \stoptext
>
>
> \def\stripnumber#1%
>    {\cldcontext{lpeg.match(lpeg.stripper(lpeg.US("¹²³⁴⁵⁶⁷⁸⁹⁰")),
> [==[#1]==])}}
>
> (US -> utf set)
>
> or
>
> \startluacode
>      local s = lpeg.stripper(lpeg.US("¹²³⁴⁵⁶⁷⁸⁹⁰"))
>      function document.StripNumber(str)
>          context(lpeg.match(s, str))
>      end
> \stopluacode
>
> \def\stripnumber#1{\ctxlua{document.StripNumber([==[#1]==])}}
>
> or you can go fancy:
>
> \startluacode
>      local p_strip = lpeg.stripper(lpeg.US("¹²³⁴⁵⁶⁷⁸⁹⁰"))
>
>      interfaces.implement {
>          name      = "StripNumber",
>          public    = true,
>          arguments = "string",
>          actions   = function(str)
>              context(lpeg.match(p_strip, str))
>          end
>      }
> \stopluacode
>
> \StripNumber{zoológico⁰}
>
> There are more efficient variants but i guess it's good enough.
>
> 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
> -----------------------------------------------------------------
>


-- 
Todas as coisas fatigam o corpo, salvo a música, que não fatiga nem o corpo
nem seus membros, por ser descanso da alma, primavera do coração, distração
do aflito, entretenimento do solitário, e viático do viajante.

Kunnâsh al-Hâ'ik (Cancioneiro de al-Hâ'ik)

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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 / 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
___________________________________________________________________________________