From: Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Pablo Rodriguez <oinos@gmx.es>
Subject: Re: \doifelse not working, \doiftextelse breaking
Date: Fri, 9 Oct 2020 16:08:18 +0200 [thread overview]
Message-ID: <bbad4b8c-e1b7-0992-1ac8-0467ac73b853@gmail.com> (raw)
In-Reply-To: <ce5d3ac5-cf88-5f2c-c1e0-41aa4b65dd65@gmx.es>
Pablo Rodriguez schrieb am 09.10.2020 um 15:58:
> Dear list,
>
> I have the following sample:
>
> \starttext
> \startluacode
> function document.starts_with(str, start)
> if str:sub(1, #start) == start then
> context(start)
> end
> end
> \stopluacode
>
> \unexpanded\def\startswith[#1][#2]
> {\cldcontext{document.starts_with("#1", "#2")}}
You need a % at the end of the definition, otherwise TeX expects a space
after the second argument to end the command.
\unexpanded\def\startswith[#1][#2]%
{...}
To improve your command and allow a space between both arguments you can use
\unexpanded\def\startswith
{\dodoubleargument\dostartswith}
\def\dostartswith[#1][#2]%
{...}
or just add a dummy parameter and use #1 and #3 to pass the arguments
\unexpanded\def\startswith[#1]#2[#3]%
{...}
Wolfgang
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next prev parent reply other threads:[~2020-10-09 14:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-09 13:58 Pablo Rodriguez
2020-10-09 14:08 ` Wolfgang Schuster [this message]
2020-10-09 14:31 ` Pablo Rodriguez
2020-10-09 15:10 ` Wolfgang Schuster
2020-10-09 19:24 ` Pablo Rodriguez
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