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* LMTX error processing Adobe Arabic Naskh font
@ 2021-11-10 16:00 Idris Samawi Hamid ادريس سماوي حامد via ntg-context
  2021-11-10 16:04 ` Idris Samawi Hamid ادريس سماوي حامد via ntg-context
  2021-11-13 23:13 ` Idris Samawi Hamid ادريس سماوي حامد via ntg-context
  0 siblings, 2 replies; 3+ messages in thread
From: Idris Samawi Hamid ادريس سماوي حامد via ntg-context @ 2021-11-10 16:00 UTC (permalink / raw)
  To: mailing list for ConTeXt users
  Cc: Idris Samawi Hamid ادريس
	سماوي حامد

Dear Hans and gang,

Consider the following MWE:

==============
\definefont[ARABICFONT][file:Adobe_Naskh.ttf*arabic at 28pt]
% \definefont[ARABICFONT][file:Amiri-Regular_0.ttf*arabic at 28pt]
% \definefont[ARABICFONT][file:Scheherazade-Regular.ttf*arabic at 28pt]
% \definefont[ARABICFONT][file:UthmanTN1_Ver10.otf*arabic at 28pt]
% \definefont[ARABICFONT][file:almfixed.otf*arabic at 28pt]

\disabledirectives[filters.utf.reorder]
\noheaderandfooterlines

\setupwhitespace[big]
% \setupinterlinespace[line=4.2ex]

\starttext
% \startTEXpage[offset=1ex]
\setupdirections[bidi=global,method=one]
\righttoleft
\ARABICFONT

خَ‍ % a

خَل

% \stopTEXpage
\stoptext
==============

Three bugs:

I. If we use start|stoptex and comment start|stopTeXpage, then both lines  
19 and 21 give an error:

=======
tex error       > tex error on line 20 in file ./test.tex:

lua error:

	callback error: [string  
"C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to index  
a number value (local 'chainstep')
stack traceback:
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in  
upvalue 'chainrun'
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
function <[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514>
	(...tail calls...)
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in  
upvalue 'chainrun'
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
local 'handler'
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in  
field '?'
	...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in  
upvalue 'nodes_handlers_characters'
	[string "local tonut  = nodes.tonut..."]:23: in function <[string "local  
tonut  = nodes.tonut..."]:12>
	(...tail calls...)	

10     \setupwhitespace[big]
11     % \setupinterlinespace[line=4.2ex]
12
13     \starttext
14     % \startTEXpage[offset=1ex]
15     \setupdirections[bidi=global,method=one]
16     \righttoleft
17     \ARABICFONT
18
19     خَ‍
20 >>
21     خَل
22
23     % \stopTEXpage
24     \stoptext
=======

Comment line 19 and yu will get virtually the same error.

II. Using start|stopTeXpage, only line 21 gives the error:

=======
tex error       > tex error on line 22 in file ./test.tex:

lua error:

	callback error: [string  
"C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to index  
a number value (local 'chainstep')
stack traceback:
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in  
upvalue 'chainrun'
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
function <[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514>
	(...tail calls...)
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in  
upvalue 'chainrun'
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
local 'handler'
	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in  
field '?'
	...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in  
upvalue 'nodes_handlers_characters'
	[string "local tonut  = nodes.tonut..."]:23: in function <[string "local  
tonut  = nodes.tonut..."]:12>
	(...tail calls...)	

12
13     % \starttext
14     \startTEXpage[offset=1ex]
15     \setupdirections[bidi=global,method=one]
16     \righttoleft
17     \ARABICFONT
18
19     خَ‍ % a
20
21     خَل
22 >>
23     \stopTEXpage
24     % \stoptext
=======

III Let us switch to almfixed:

If you comment line 21 and use only line 19, then there is no tex error,  
but the result is rendered incorrectly - see test-broken.pdf.

For the correct result, see test-correct.pdf (add a space and any letter -  
uncomment the end of line 19).

Adobe Naskh is not publicly available. The four commented fonts are  
publicly available and generate no tex errors.

Best wishes
Idris
-- 
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80512
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: LMTX error processing Adobe Arabic Naskh font
  2021-11-10 16:00 LMTX error processing Adobe Arabic Naskh font Idris Samawi Hamid ادريس سماوي حامد via ntg-context
@ 2021-11-10 16:04 ` Idris Samawi Hamid ادريس سماوي حامد via ntg-context
  2021-11-13 23:13 ` Idris Samawi Hamid ادريس سماوي حامد via ntg-context
  1 sibling, 0 replies; 3+ messages in thread
From: Idris Samawi Hamid ادريس سماوي حامد via ntg-context @ 2021-11-10 16:04 UTC (permalink / raw)
  To: mailing list for ConTeXt users
  Cc: Idris Samawi Hamid ادريس
	سماوي حامد

[-- Attachment #1: Type: text/plain, Size: 4518 bytes --]

For III: See attached!

On Wed, 10 Nov 2021 09:00:26 -0700, Idris Samawi Hamid ادريس سماوي حامد  
<Idris.Hamid@colostate.edu> wrote:

> Dear Hans and gang,
>
> Consider the following MWE:
>
> ==============
> \definefont[ARABICFONT][file:Adobe_Naskh.ttf*arabic at 28pt]
> % \definefont[ARABICFONT][file:Amiri-Regular_0.ttf*arabic at 28pt]
> % \definefont[ARABICFONT][file:Scheherazade-Regular.ttf*arabic at 28pt]
> % \definefont[ARABICFONT][file:UthmanTN1_Ver10.otf*arabic at 28pt]
> % \definefont[ARABICFONT][file:almfixed.otf*arabic at 28pt]
>
> \disabledirectives[filters.utf.reorder]
> \noheaderandfooterlines
>
> \setupwhitespace[big]
> % \setupinterlinespace[line=4.2ex]
>
> \starttext
> % \startTEXpage[offset=1ex]
> \setupdirections[bidi=global,method=one]
> \righttoleft
> \ARABICFONT
>
> خَ‍ % a
>
> خَل
>
> % \stopTEXpage
> \stoptext
> ==============
>
> Three bugs:
>
> I. If we use start|stoptex and comment start|stopTeXpage, then both  
> lines 19 and 21 give an error:
>
> =======
> tex error       > tex error on line 20 in file ./test.tex:
>
> lua error:
>
> 	callback error: [string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to  
> index a number value (local 'chainstep')
> stack traceback:
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> function <[string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514>
> 	(...tail calls...)
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> local 'handler'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in  
> field '?'
> 	...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in  
> upvalue 'nodes_handlers_characters'
> 	[string "local tonut  = nodes.tonut..."]:23: in function <[string  
> "local tonut  = nodes.tonut..."]:12>
> 	(...tail calls...)	
>
> 10     \setupwhitespace[big]
> 11     % \setupinterlinespace[line=4.2ex]
> 12
> 13     \starttext
> 14     % \startTEXpage[offset=1ex]
> 15     \setupdirections[bidi=global,method=one]
> 16     \righttoleft
> 17     \ARABICFONT
> 18
> 19     خَ‍
> 20 >>
> 21     خَل
> 22
> 23     % \stopTEXpage
> 24     \stoptext
> =======
>
> Comment line 19 and yu will get virtually the same error.
>
> II. Using start|stopTeXpage, only line 21 gives the error:
>
> =======
> tex error       > tex error on line 22 in file ./test.tex:
>
> lua error:
>
> 	callback error: [string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to  
> index a number value (local 'chainstep')
> stack traceback:
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> function <[string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514>
> 	(...tail calls...)
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> local 'handler'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in  
> field '?'
> 	...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in  
> upvalue 'nodes_handlers_characters'
> 	[string "local tonut  = nodes.tonut..."]:23: in function <[string  
> "local tonut  = nodes.tonut..."]:12>
> 	(...tail calls...)	
>
> 12
> 13     % \starttext
> 14     \startTEXpage[offset=1ex]
> 15     \setupdirections[bidi=global,method=one]
> 16     \righttoleft
> 17     \ARABICFONT
> 18
> 19     خَ‍ % a
> 20
> 21     خَل
> 22 >>
> 23     \stopTEXpage
> 24     % \stoptext
> =======
>
> III Let us switch to almfixed:
>
> If you comment line 21 and use only line 19, then there is no tex error,  
> but the result is rendered incorrectly - see test-broken.pdf.
>
> For the correct result, see test-correct.pdf (add a space and any letter  
> - uncomment the end of line 19).
>
> Adobe Naskh is not publicly available. The four commented fonts are  
> publicly available and generate no tex errors.
>
> Best wishes
> Idris


-- 
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80512

[-- Attachment #2: test-broken.pdf --]
[-- Type: application/pdf, Size: 5673 bytes --]

[-- Attachment #3: test-correct.pdf --]
[-- Type: application/pdf, Size: 5818 bytes --]

[-- Attachment #4: Type: text/plain, Size: 493 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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: LMTX error processing Adobe Arabic Naskh font
  2021-11-10 16:00 LMTX error processing Adobe Arabic Naskh font Idris Samawi Hamid ادريس سماوي حامد via ntg-context
  2021-11-10 16:04 ` Idris Samawi Hamid ادريس سماوي حامد via ntg-context
@ 2021-11-13 23:13 ` Idris Samawi Hamid ادريس سماوي حامد via ntg-context
  1 sibling, 0 replies; 3+ messages in thread
From: Idris Samawi Hamid ادريس سماوي حامد via ntg-context @ 2021-11-13 23:13 UTC (permalink / raw)
  To: mailing list for ConTeXt users
  Cc: Idris Samawi Hamid ادريس
	سماوي حامد

Problems I and II are apparently solved in the latest update. As for III,  
the following works:

\definefont[ARABICFONT][file:almfixed.otf*arabic at 28pt]

\noheaderandfooterlines
\setupwhitespace[big]

% \starttext
\startTEXpage[offset=1ex]
% \setupdirections[bidi=global,method=one]
\righttoleft
% \setupalign[r2l]
% \dontleavehmode \setupalign[r2l]
\ARABICFONT

\utfchar{"062E}\utfchar{"064E}\utfchar{"200D}
\stopTEXpage
% \stoptext

As Hans explained off-list, TEXpage interacts with hmode and vmode in ways  
that may appear unpredictable in some circumstances. In this case the  
circumstance is

% \setupdirections[bidi=global,method=one]

Uncommenting this line will bring the bidi issue back, but it's not needed  
for the desired result.

Best wishes
Idris

On Wed, 10 Nov 2021 09:00:26 -0700, Idris Samawi Hamid ادريس سماوي حامد  
via ntg-context <ntg-context@ntg.nl> wrote:

> Dear Hans and gang,
>
> Consider the following MWE:
>
> ==============
> \definefont[ARABICFONT][file:Adobe_Naskh.ttf*arabic at 28pt]
> % \definefont[ARABICFONT][file:Amiri-Regular_0.ttf*arabic at 28pt]
> % \definefont[ARABICFONT][file:Scheherazade-Regular.ttf*arabic at 28pt]
> % \definefont[ARABICFONT][file:UthmanTN1_Ver10.otf*arabic at 28pt]
> % \definefont[ARABICFONT][file:almfixed.otf*arabic at 28pt]
>
> \disabledirectives[filters.utf.reorder]
> \noheaderandfooterlines
>
> \setupwhitespace[big]
> % \setupinterlinespace[line=4.2ex]
>
> \starttext
> % \startTEXpage[offset=1ex]
> \setupdirections[bidi=global,method=one]
> \righttoleft
> \ARABICFONT
>
> خَ‍ % a
>
> خَل
>
> % \stopTEXpage
> \stoptext
> ==============
>
> Three bugs:
>
> I. If we use start|stoptex and comment start|stopTeXpage, then both  
> lines 19 and 21 give an error:
>
> =======
> tex error       > tex error on line 20 in file ./test.tex:
>
> lua error:
>
> 	callback error: [string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to  
> index a number value (local 'chainstep')
> stack traceback:
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> function <[string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514>
> 	(...tail calls...)
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> local 'handler'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in  
> field '?'
> 	...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in  
> upvalue 'nodes_handlers_characters'
> 	[string "local tonut  = nodes.tonut..."]:23: in function <[string  
> "local tonut  = nodes.tonut..."]:12>
> 	(...tail calls...)	
>
> 10     \setupwhitespace[big]
> 11     % \setupinterlinespace[line=4.2ex]
> 12
> 13     \starttext
> 14     % \startTEXpage[offset=1ex]
> 15     \setupdirections[bidi=global,method=one]
> 16     \righttoleft
> 17     \ARABICFONT
> 18
> 19     خَ‍
> 20 >>
> 21     خَل
> 22
> 23     % \stopTEXpage
> 24     \stoptext
> =======
>
> Comment line 19 and yu will get virtually the same error.
>
> II. Using start|stopTeXpage, only line 21 gives the error:
>
> =======
> tex error       > tex error on line 22 in file ./test.tex:
>
> lua error:
>
> 	callback error: [string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to  
> index a number value (local 'chainstep')
> stack traceback:
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> function <[string  
> "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514>
> 	(...tail calls...)
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in  
> upvalue 'chainrun'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in  
> local 'handler'
> 	[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in  
> field '?'
> 	...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in  
> upvalue 'nodes_handlers_characters'
> 	[string "local tonut  = nodes.tonut..."]:23: in function <[string  
> "local tonut  = nodes.tonut..."]:12>
> 	(...tail calls...)	
>
> 12
> 13     % \starttext
> 14     \startTEXpage[offset=1ex]
> 15     \setupdirections[bidi=global,method=one]
> 16     \righttoleft
> 17     \ARABICFONT
> 18
> 19     خَ‍ % a
> 20
> 21     خَل
> 22 >>
> 23     \stopTEXpage
> 24     % \stoptext
> =======
>
> III Let us switch to almfixed:
>
> If you comment line 21 and use only line 19, then there is no tex error,  
> but the result is rendered incorrectly - see test-broken.pdf.
>
> For the correct result, see test-correct.pdf (add a space and any letter  
> - uncomment the end of line 19).
>
> Adobe Naskh is not publicly available. The four commented fonts are  
> publicly available and generate no tex errors.
>
> Best wishes
> Idris


-- 
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80512
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

^ permalink raw reply	[flat|nested] 3+ messages in thread
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2021-11-10 16:04 ` Idris Samawi Hamid ادريس سماوي حامد via ntg-context
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