From: "Thomas A. Schmitz" <thomas.schmitz@uni-bonn.de>
To: mailing ConTeXt users list for <ntg-context@ntg.nl>
Subject: lpeg substitution
Date: Tue, 11 Aug 2009 11:34:41 +0200 [thread overview]
Message-ID: <00765789-37D5-4318-9055-898AAA792135@uni-bonn.de> (raw)
Hi all,
I'm working on my Greek module again and am trying to filter and
massage the input via lpeg, but there's something I don't quite get.
As a minimal example: suppose I want to substitute A and B in my input
with X and leave all other letters alone. Here's my attempt:
\startluacode
do
local replace = {
A = "X",
B = "X",
}
local dosub = (lpeg.Cs(1)) / replace
local subs =
(dosub)^0
function test (string)
tex.sprint(lpeg.match(subs,string))
end
end
\stopluacode
\def\Substitute#1{\ctxlua{test("#1")}}
\starttext
\Substitute{ABC}
\stoptext
It substitutes alright, but the "C" is not included in the stream
which ctxlua gives to TeX. How can I modify my lpeg pattern?
Thanks, and all best
Thomas
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next reply other threads:[~2009-08-11 9:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-11 9:34 Thomas A. Schmitz [this message]
2009-08-11 10:59 ` Hans Hagen
2009-08-11 11:21 ` Thomas A. Schmitz
2009-08-11 12:35 ` Hans Hagen
2009-08-11 15:14 ` Thomas A. Schmitz
2009-08-11 22:01 ` Hans Hagen
2009-08-12 6:51 ` Taco Hoekwater
2009-08-12 8:32 ` Hans Hagen
2009-08-12 9:04 ` Thomas A. Schmitz
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