Re: [NTG-context] catch % in gsub("%", "\\letterpercent")

27 Aug 2020


      Pablo Rodriguez schrieb am 27.08.2020 um 17:56:
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On 8/27/20 5:30 PM, Taco Hoekwater wrote:
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Using Lua gsub(), I need to replace something like:
 string.gsub([[\xmlraw{#1}{.}]], "%", "\\letterpercent")
Double it: %%
See also https://www.lua.org/manual/5.3/manual.html#6.4.1 , but the
mention of %% is a bit hidden.
Many thanks for your replies, Taco and Hans.
I’m afraid this doesn’t work (and I need \xmlraw there):
\startbuffer[demo]
   <html>
    <body>
      <div id="First">
      <p>The <span class="special">% best</span> paragraph.</p>
      </div>
    </body>
   </html>
   \stopbuffer
\startxmlsetups xml:initialize
     \xmlsetsetup{#1}{html}{xml:gen}
   \stopxmlsetups
\xmlregistersetup{xml:initialize}
\startxmlsetups xml:gen
     \startitemize
     \xmlfilter{#1}{/**/span[@class='special']/command(xml:special)}
     \stopitemize
   \stopxmlsetups
\startxmlsetups xml:special
     \startitem
     \cldcontext{string.gsub([[\xmlraw{#1}{.}]], "%%",
        "\\letterpercent")}
     \stopitem
   \stopxmlsetups
This works fine with your example

\startxmlsetups xml:special
     \startitem
     \xmlflush{#1}
     \stopitem
\stopxmlsetups

and to escape special characters you can use context.escape()

\startxmlsetups xml:special
     \startitem
     \cldcontext{context.escape([[\xmlraw{#1}{.}]])}
     \stopitem
\stopxmlsetups

Wolfgang

Re: [NTG-context] catch % in gsub("%", "\\letterpercent")

Wolfgang Schuster