ntg-context - mailing list for ConTeXt users
 help / color / mirror / Atom feed
From: luigi scarso <luigi.scarso@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Lua conditionals fail inside \starttexdefinition
Date: Tue, 4 Sep 2012 21:41:38 +0200	[thread overview]
Message-ID: <CAG5iGsD5h0WPvVNeKso+0+_EDi-yOc8+68eF05wk8EsSNSzuQA@mail.gmail.com> (raw)
In-Reply-To: <20120904213525.59460800@homerow>


[-- Attachment #1.1: Type: text/plain, Size: 1024 bytes --]

On Tue, Sep 4, 2012 at 9:35 PM, Marco Patzer <homerow@lavabit.com> wrote:

> On 2012-09-04 Herbert Voss <Herbert.Voss@FU-Berlin.DE> wrote:
>
> > voss@shania:~/ConTeXt> lua zzz.lua
> > lua: zzz.lua:1: unexpected symbol near ';'
>
> marco@homerow:/tmp$ lua t.lua
> true
>
> > voss@shania:~/ConTeXt> lua -v
> > Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio
>
> marco@homerow:/tmp$ lua -v
> Lua 5.2.1  Copyright (C) 1994-2012 Lua.org, PUC-Rio
>
>
Because in Lua 5.2 there is the empty statements
http://www.lua.org/manual/5.2/manual.html#3
"""
3.3.1 – Blocks

A block is a list of statements, which are executed sequentially:

block ::= {stat}
Lua has empty statements that allow you to separate statements with
semicolons, start a block with a semicolon or write two semicolons in
sequence:

stat ::= ‘;’
"""
So
stat ::= if exp then block {elseif exp then block} [else block] end

means that
if exp then
;
else
;
end
is valid.

Luatex still uses lua 5.1.4


-- 
luigi

[-- Attachment #1.2: Type: text/html, Size: 1938 bytes --]

[-- Attachment #2: Type: text/plain, Size: 485 bytes --]

___________________________________________________________________________________
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
___________________________________________________________________________________

  parent reply	other threads:[~2012-09-04 19:41 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-04 12:21 Marco Patzer
2012-09-04 12:26 ` Wolfgang Schuster
2012-09-04 18:24   ` Aditya Mahajan
2012-09-04 18:34     ` Wolfgang Schuster
2012-09-04 18:44       ` Marco Patzer
2012-09-04 18:56         ` Herbert Voss
2012-09-04 19:05           ` Marco Patzer
2012-09-04 19:15             ` luigi scarso
2012-09-04 19:18             ` Herbert Voss
2012-09-04 19:35               ` Marco Patzer
2012-09-04 19:39                 ` Herbert Voss
2012-09-04 19:47                   ` Marco Patzer
2012-09-04 19:41                 ` luigi scarso [this message]
2012-09-04 19:05           ` Aditya Mahajan
2012-09-04 19:22             ` luigi scarso
2012-09-04 19:28               ` Herbert Voss
2012-09-05  9:09         ` Hans Hagen

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=CAG5iGsD5h0WPvVNeKso+0+_EDi-yOc8+68eF05wk8EsSNSzuQA@mail.gmail.com \
    --to=luigi.scarso@gmail.com \
    --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).