Re: [NTG-context] Stange behavior of \startluacode

2010-10-05 Thread Aditya Mahajan 

On Sun, 3 Oct 2010, Hans Hagen wrote:


On 3-10-2010 1:46, Aditya Mahajan wrote:

Hi,

The following snippet

\startluacode
-- \undefined why should a comment matter
a = 10
\stopluacode

fails with

system > error on line 4 in file bug.tex: Undefined control sequence ...
-- \undefined
why should a comment matt a = 10
\dodostartluacode ...and \directlua \zerocount {#1
}}
l.4 \stopluacode


Bug or limitation?


feature ... the content gets expanded

texnically I could catch comments but it's not worth the effort (and 
slowdown)


OK. I documented this on the wiki.

Aditya
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Re: [NTG-context] Stange behavior of \startluacode

2010-10-04 Thread Procházka Lukáš Ing . - Pontex s . r . o . 

Hello,

my observation:

---
\starttext
  AAA

  \startluacode

a = 10

context(a)

-- a = 20

context(a)

  \stopluacode
\stoptext
---

- works OK, 'AAA', '10' and '20' is printed.

If I modify the code:

---
\starttext
  AAA

  \startluacode

a = 10

context(a)

-- a = 20

context(a)

% a = 30

context(a)

  \stopluacode
\stoptext
---

- I get an error:

! LuaTeX error :11: unexpected symbol near '%'.

So it seems to me that '--' works fine to start a comment but '%' doesn't (?).

Lukas


NB: ConTeXt  ver: 2010.09.29 23:37 MKIV  fmt: 2010.9.30  int: english/english


On Sun, 03 Oct 2010 08:33:23 +0200, Wolfgang Schuster 
 wrote:



Am 03.10.2010 um 01:46 schrieb Aditya Mahajan:


Hi,

The following snippet

\startluacode
-- \undefined why should a comment matter
a = 10
\stopluacode

fails with

system  > error on line 4 in file bug.tex: Undefined control sequence 
...
-- \undefined
   why should a comment matt  a = 10
\dodostartluacode ...and \directlua \zerocount {#1
}}
l.4 \stopluacode


Bug or limitation?


The comment character in the luacode environment is “%”.

Wolfgang


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Re: [NTG-context] Stange behavior of \startluacode

2010-10-04 Thread Hans Hagen 

On 4-10-2010 9:19, Procházka Lukáš Ing. - Pontex s. r. o. wrote:

(Sorry, I've written bad information, now correcting (*)...)

Hello,

my observation:

---
\starttext
AAA

\startluacode

a = 10

context(a)

-- a = 20

context(a)

\stopluacode
\stoptext
---

- works OK, 'AAA', '10' and '10' (*) is printed.

If I modify the code:

---
\starttext
AAA

\startluacode

a = 10

context(a)

-- a = 20

context(a)

% a = 30

context(a)

\stopluacode
\stoptext
---

- I get an error:

! LuaTeX error :11: unexpected symbol near '%'.

So it seems to me that '--' works fine to start a comment but '%'
doesn't (?).



indeed.

but string.format("%0.3f %0.3f",a,b) does as does context("%0.3f 
%0.3f",a,b) so the % is just a normal token


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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Re: [NTG-context] Stange behavior of \startluacode

2010-10-04 Thread Procházka Lukáš Ing . - Pontex s . r . o . 

(Sorry, I've written bad information, now correcting (*)...)

Hello,

my observation:

---
\starttext
   AAA

   \startluacode

 a = 10

 context(a)

 -- a = 20

 context(a)

   \stopluacode
\stoptext
---

- works OK, 'AAA', '10' and '10' (*) is printed.

If I modify the code:

---
\starttext
   AAA

   \startluacode

 a = 10

 context(a)

 -- a = 20

 context(a)

 % a = 30

 context(a)

   \stopluacode
\stoptext
---

- I get an error:

! LuaTeX error :11: unexpected symbol near '%'.

So it seems to me that '--' works fine to start a comment but '%' doesn't (?).

Lukas


NB: ConTeXt  ver: 2010.09.29 23:37 MKIV  fmt: 2010.9.30  int: english/english


On Sun, 03 Oct 2010 08:33:23 +0200, Wolfgang Schuster 
 wrote:



Am 03.10.2010 um 01:46 schrieb Aditya Mahajan:


Hi,

The following snippet

\startluacode
-- \undefined why should a comment matter
a = 10
\stopluacode

fails with

system  > error on line 4 in file bug.tex: Undefined control sequence 
...
-- \undefined
   why should a comment matt  a = 10
\dodostartluacode ...and \directlua \zerocount {#1
}}
l.4 \stopluacode


Bug or limitation?


The comment character in the luacode environment is “%”.

Wolfgang


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Re: [NTG-context] Stange behavior of \startluacode

2010-10-03 Thread Hans Hagen 

On 3-10-2010 1:46, Aditya Mahajan wrote:

Hi,

The following snippet

\startluacode
-- \undefined why should a comment matter
a = 10
\stopluacode

fails with

system > error on line 4 in file bug.tex: Undefined control sequence ...
-- \undefined
why should a comment matt a = 10
\dodostartluacode ...and \directlua \zerocount {#1
}}
l.4 \stopluacode


Bug or limitation?


feature ... the content gets expanded

texnically I could catch comments but it's not worth the effort (and 
slowdown)


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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Re: [NTG-context] Stange behavior of \startluacode

2010-10-03 Thread Wolfgang Schuster 

Am 03.10.2010 um 11:02 schrieb Wolfgang Schuster:

> Am 03.10.2010 um 10:28 schrieb luigi scarso:
> 
>> Limitation, but it should be doable to remedy in TeX.
> 
> Possible but is it worth the effort, when you start with “--” the percent 
> should also behave like in Lua etc.

The problem is that there is no solution to write something expandable (because 
\startluacode expands the content) which is required here.

> \starttext
> 
> \bgroup\obeylines
> \gdef\texcomment#1
> {}
> \egroup
> 
> \bgroup
> \let\letterhyphen=-
> \catcode`-=13
> \unexpanded\def-{\futurelet\next\doscanhyphen}
> \def\doscanhyphen
> {\ifx\next-
>\expandafter\texcomment
>  \else
>\expandafter\letterhyphen
>  \fi}
> \obeylines
> text
> text
> % foo
> - foo 1

-- \undefined
\normalexpanded{- foo 1}
\normalexpanded{-- foo 2}
\normalexpanded{-- \undefined}

> text
> \egroup
> 
> \stoptext

Wolfgang

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Re: [NTG-context] Stange behavior of \startluacode

2010-10-03 Thread Wolfgang Schuster 

Am 03.10.2010 um 10:28 schrieb luigi scarso:

>> Bug or limitation?
> Limitation, but it should be doable to remedy in TeX.

Possible but is it worth the effort, when you start with “--” the percent 
should also behave like in Lua etc.

\starttext

\bgroup\obeylines
\gdef\texcomment#1
  {}
\egroup

\bgroup
\let\letterhyphen=-
\catcode`-=13
\unexpanded\def-{\futurelet\next\doscanhyphen}
\def\doscanhyphen
  {\ifx\next-
 \expandafter\texcomment
   \else
 \expandafter\letterhyphen
   \fi}
\obeylines
text
text
% foo
- foo 1
-- foo 2
\normalexpanded{- foo 1}
\normalexpanded{-- foo 2}
text
\egroup

\stoptext

Wolfgang

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Re: [NTG-context] Stange behavior of \startluacode

2010-10-03 Thread luigi scarso 
On Sun, Oct 3, 2010 at 1:46 AM, Aditya Mahajan  wrote:
> Hi,
>
> The following snippet
>
> \startluacode
>  -- \undefined why should a comment matter
>  a = 10
> \stopluacode
>
> fails with
>
> system          > error on line 4 in file bug.tex: Undefined control
> sequence ...
>  -- \undefined
>                             why should a comment matt  a = 10
> \dodostartluacode ...and \directlua \zerocount {#1
>                                                  }}
> l.4 \stopluacode
>
>
> Bug or limitation?
Limitation, but it should be doable to remedy in TeX.



-- 
luigi
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Re: [NTG-context] Stange behavior of \startluacode

2010-10-02 Thread Wolfgang Schuster 

Am 03.10.2010 um 01:46 schrieb Aditya Mahajan:

> Hi,
> 
> The following snippet
> 
> \startluacode
> -- \undefined why should a comment matter
> a = 10
> \stopluacode
> 
> fails with
> 
> system  > error on line 4 in file bug.tex: Undefined control sequence 
> ...
> -- \undefined
>why should a comment matt  a = 10
> \dodostartluacode ...and \directlua \zerocount {#1
> }}
> l.4 \stopluacode
> 
> 
> Bug or limitation?

The comment character in the luacode environment is “%”.

Wolfgang

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Re: [NTG-context] Stange behavior of \startluacode

2010-10-02 Thread Wolfgang Schuster 

Am 03.10.2010 um 01:46 schrieb Aditya Mahajan:

> Hi,
> 
> The following snippet
> 
> \startluacode
>  -- \undefined why should a comment matter
>  a = 10
> \stopluacode
> 
> fails with
> 
> system  > error on line 4 in file bug.tex: Undefined control sequence 
> ...
>  -- \undefined
> why should a comment matt  a = 10
> \dodostartluacode ...and \directlua \zerocount {#1
>  }}
> l.4 \stopluacode
> 
> 
> Bug or limitation?

The comment character in the luacode environment is “%”.

Wolfgang

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[NTG-context] Stange behavior of \startluacode

2010-10-02 Thread Aditya Mahajan 

Hi,

The following snippet

\startluacode
  -- \undefined why should a comment matter
  a = 10
\stopluacode

fails with

system  > error on line 4 in file bug.tex: Undefined control 
sequence ...

  -- \undefined
 why should a comment matt  a = 10
\dodostartluacode ...and \directlua \zerocount {#1
  }}
l.4 \stopluacode


Bug or limitation?

Aditya
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