On Mon, Jan 6, 2014 at 9:11 PM, Rajeesh K Nambiar wrote:

On Mon, Jan 6, 2014 at 10:33 PM, Hans Hagen wrote:

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On 1/4/2014 10:36 PM, Rajeesh K Nambiar wrote:

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Hello, especially Hans and Kai,

I have succeeded to an extent in adding Malayalam shaping to the existing Devanagari shaping. Being a complete novice in Lua and mkiv, I'm at a point where your expertise is needed to proceed further. Please find the attached patch, test case listed below and expected rendering for comparison. Additionally needed to support:

in next beta (some a bit different)

Thank you very much for incorporating it!

Just hit this with latest beta (same test case as before):

error: .../context/tex/texmf-context/tex/context/base/font-odv.lua:1603: attempt to call global 'setfield' (a nil value)

As of yesterday's beta, I get the following error: font-odv.lua:879: attempt to index local 'start' (a number value) Probably you're still updating things, am I testing prematurely?

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-- Cheers, Rajeesh

On Wed, Jan 8, 2014 at 9:36 PM, Hans Hagen wrote:

On 1/8/2014 6:50 PM, Rajeesh K Nambiar wrote:

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On Mon, Jan 6, 2014 at 9:11 PM, Rajeesh K Nambiar wrote:

...

On Mon, Jan 6, 2014 at 10:33 PM, Hans Hagen wrote:

...

On 1/4/2014 10:36 PM, Rajeesh K Nambiar wrote:

...

Hello, especially Hans and Kai,

I have succeeded to an extent in adding Malayalam shaping to the existing Devanagari shaping. Being a complete novice in Lua and mkiv, I'm at a point where your expertise is needed to proceed further. Please find the attached patch, test case listed below and expected rendering for comparison. Additionally needed to support:

in next beta (some a bit different)

Thank you very much for incorporating it!

Just hit this with latest beta (same test case as before):

error: .../context/tex/texmf-context/tex/context/base/font-odv.lua:1603: attempt to call global 'setfield' (a nil value)

As of yesterday's beta, I get the following error: font-odv.lua:879: attempt to index local 'start' (a number value)

Probably you're still updating things, am I testing prematurely?

it more looks liek some mixup of files at your end (there is no 'start' in that line)

Hi Hans, I just did a clean install of beta to be sure and the issue persists. Indeed there is no 'start' at line 879 in my system as well. I tried on two different systems (both are 32 bit Linux). Are you able to compile the test file?

Hans

-- Regards, Rajeesh

On Wed, Jan 8, 2014 at 10:39 PM, Wolfgang Schuster wrote:

Am 08.01.2014 um 22:27 schrieb Rajeesh K Nambiar :

I just did a clean install of beta to be sure and the issue persists. Indeed there is no 'start' at line 879 in my system as well. I tried on two different systems (both are 32 bit Linux). Are you able to compile the test file?

I can process your example without problem even though the output doesn’t like for all cases like the text in the image.

BTW: Can you attach your test file.

Thanks for checking, Wolfgang. Attached the test file.

Wolfgang

-- Regards, Rajeesh

On Wed, Jan 8, 2014 at 10:53 PM, Wolfgang Schuster wrote:

Am 08.01.2014 um 22:51 schrieb Rajeesh K Nambiar :

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On Wed, Jan 8, 2014 at 10:39 PM, Wolfgang Schuster wrote:

...

Am 08.01.2014 um 22:27 schrieb Rajeesh K Nambiar :

I just did a clean install of beta to be sure and the issue persists. Indeed there is no 'start' at line 879 in my system as well. I tried on two different systems (both are 32 bit Linux). Are you able to compile the test file?

I can process your example without problem even though the output doesn’t like for all cases like the text in the image.

BTW: Can you attach your test file.

Thanks for checking, Wolfgang. Attached the test file.

Remove \usemodule[font-odv], the code is part of the core and reloading it causes only problems.

Indeed, that fixes the compilation! And 2-part matras are fine now. But the output (shaping) is not what is expected as you have observed. Notably: 1. When a pre-base matra follows the "akhn" ligatures are broken 2. "pref", "pstf" and "blwf" ligatures are not formed

-- Regards, Rajeesh

On Thu, Jan 9, 2014 at 7:11 PM, Hans Hagen wrote:

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Remove \usemodule[font-odv], the code is part of the core and reloading it causes only problems.

Indeed, that fixes the compilation! And 2-part matras are fine now. But the output (shaping) is not what is expected as you have observed. Notably: 1. When a pre-base matra follows the "akhn" ligatures are broken 2. "pref", "pstf" and "blwf" ligatures are not formed

you need to identify the place in the code where that has to happen after which i can have a look at it (with real minimal examples)

With the initial patch I had sent, these were working okay (ie, akhn, pref, pstf and blwf ligatures were being formed). Minimal character sequence for test case: \char"0D26 \char"0D4D \char"0D26 \char"0D47 %% needs to form With initial patch, in "methods.dev2", (syllablestart,syllableend) were: (0D26, 0D26) {cluster DA, VIRAMA, DA} and (0D47,0D47) {E}. Current beta gets (0D26,0D4D) {cluster DA, VIRAMA} and (0D26,0D47) {DA, E}. Something changed in "analyze_next_chars_two", may be? Okay - found that you had not considered 0D4D (virama/halant) not as "halant{}" but as "stress_tone_mark{}". Adding 0D4D to the array "halant{}" restores the previous behaviour - ligatures are formed but with issues mentioned in the initial mail. "analyze_next_chars_two" indeed looks for halant.

-- Regards, Rajeesh