* Again: LuaTeX error: invalid escape sequence near '\i'
@ 2013-04-19 21:27 Jan Heinen
2013-04-19 21:35 ` Hans Hagen
0 siblings, 1 reply; 6+ messages in thread
From: Jan Heinen @ 2013-04-19 21:27 UTC (permalink / raw)
To: ntg-context
An example which was working with ConText (version beginning
2012) - and now I get an error:
\define\imagepath {/home/janis/images}
\starttext
\externalfigure[\imagepath/test.jpg]
\stoptext
LuaTeX error [string "\directlua "]:1: invalid escape
sequence near '\i'
Without my parameter \imagepath there ist no problem.
And if I want to see the "echo" of the parameter with
\imagepath
I get "/home/janis/images" which I expect.
I need parameters very often. How can I use my parameter
\imagepath in \externafigure?
Regards
Janis
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Again: LuaTeX error: invalid escape sequence near '\i'
@ 2013-04-20 0:08 Jan Heinen
0 siblings, 0 replies; 6+ messages in thread
From: Jan Heinen @ 2013-04-20 0:08 UTC (permalink / raw)
To: ntg-context
The following two commands seem to do the same:
\defineexpandable\...
\def\...
And this two also do the same:
\define\...
\unexpanded\def\...
\def is a low-level-command and shouldn't be used. Right?
Regards
Janis
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Again: LuaTeX error: invalid escape sequence near '\i'
@ 2013-04-20 0:16 Jan Heinen
2013-04-20 0:45 ` Hans Hagen
2013-04-20 0:48 ` Hans Hagen
0 siblings, 2 replies; 6+ messages in thread
From: Jan Heinen @ 2013-04-20 0:16 UTC (permalink / raw)
To: ntg-context
In last year Context this worked:
>> \define\imagepath {/home/janis/images}
>> \externalfigure[\imagepath/test.jpg]
Now this change is necesarry:
> \defineexpandble\imagepath {/home/janis/images}
Where do the change come from: Context, Tex or Luatex? Is
there a genereal change which we have to take care off?
Last year I made a book with a lot of programming in Context
and I would like to use the code for the next book.
Regards
Janis
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Again: LuaTeX error: invalid escape sequence near '\i'
2013-04-20 0:16 Jan Heinen
@ 2013-04-20 0:45 ` Hans Hagen
2013-04-20 0:48 ` Hans Hagen
1 sibling, 0 replies; 6+ messages in thread
From: Hans Hagen @ 2013-04-20 0:45 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Jan Heinen
On 4/20/2013 2:16 AM, Jan Heinen wrote:
> In last year Context this worked:
> >> \define\imagepath {/home/janis/images}
> >> \externalfigure[\imagepath/test.jpg]
>
> Now this change is necesarry:
> > \defineexpandble\imagepath {/home/janis/images}
>
> Where do the change come from: Context, Tex or Luatex? Is there a
> genereal change which we have to take care off?
>
> Last year I made a book with a lot of programming in Context and I would
> like to use the code for the next book.
at some point we decided to make \define generate an unexpandable
command (which is what one wants in most cases)
so, it's just the \define command (and in your case you could as well
use \def but it's then best to use \ImagePath as one never knows if
\imagepath isn't some internal command
(of course you can also use \setupexternfigures)
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
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If your question is of interest to others as well, please add an entry to the Wiki!
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Again: LuaTeX error: invalid escape sequence near '\i'
2013-04-20 0:16 Jan Heinen
2013-04-20 0:45 ` Hans Hagen
@ 2013-04-20 0:48 ` Hans Hagen
1 sibling, 0 replies; 6+ messages in thread
From: Hans Hagen @ 2013-04-20 0:48 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Jan Heinen
btw, the \i that lua reports is a side effect of lua being more strict
in escaping characters, so that might be a compatibility issue, although
can argue that the old lua behaviour was a buglet
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
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2013-04-19 21:27 Again: LuaTeX error: invalid escape sequence near '\i' Jan Heinen
2013-04-19 21:35 ` Hans Hagen
2013-04-20 0:08 Jan Heinen
2013-04-20 0:16 Jan Heinen
2013-04-20 0:45 ` Hans Hagen
2013-04-20 0:48 ` Hans Hagen
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