From: Jaroslav Hajtmar <hajtmar@gyza.cz>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Problem with Lua processing UTF8 substrings
Date: Wed, 01 Feb 2012 20:26:01 +0100 [thread overview]
Message-ID: <4F2991C9.2090602@gyza.cz> (raw)
Hello ConTeXist,
I want to use Lua to write characters (substrings) from a string, but I
get an error message:
! String contains an invalid utf-8 sequence.
I tried various Lua functions for working with UTF8 strings for example:
string.subutf8(string, start[,end])
for i, char in str:nextutf8(orig_pos)
string.lenutf8(string),
but without success.
Can you please someone help?
Thanks
Jaroslav Hajtmar
Here is my minimal example:
\def\mymacro#1{\ctxlua{for i=1, string.len('#1') do
context(string.sub('#1',i,i)..", ") end}}
\starttext
%\mymacro{šěřěžřýčřčžáýčý} % Here is a problem
\mymacro{asdfghjklqwertt} % Here is all OK
\stoptext
___________________________________________________________________________________
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
next reply other threads:[~2012-02-01 19:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-01 19:26 Jaroslav Hajtmar [this message]
2012-02-01 20:05 ` Philipp Gesang
2012-02-01 20:17 ` Jaroslav Hajtmar
2012-02-01 20:35 ` Philipp Gesang
2012-02-01 20:38 ` Jaroslav Hajtmar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4F2991C9.2090602@gyza.cz \
--to=hajtmar@gyza.cz \
--cc=ntg-context@ntg.nl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).