2008-IUC32-Arwi

1Arwi: Case study of Arabic, Syriac and Diacritical Unicode characters

M.I. Seyed Mohamed BuhariDepartment of Computer Science,

Faculty of Science,Universiti Brunei Darussalam,

Brunei DarussalamEmail: [email protected]

[email protected]

2Arwi An Introduction

n Called as Arabu-Tamil or Arabic-Tamil Scriptn Used by Muslims of Tamil Nadu (in India) and

Sri Lankan Used to write their religious texts as well as

communication lettersn Writing Tamil language using Arabic style of

Scriptn Like Malay language written in Jawi Script

Arwi (also called as Arabu-Tamil or Arabic-Tamil) Script was widely used by Muslims of Tamil Nadu (in India) and Sri Lanka to write their religious texts as well as communication letters. Arwi Script is writing Tamil language using Arabic style of scripts. This is similar to writing Malay language both in English and Jawi Script. Actually, Tamil language is written in Tamil Script, which is of left-to-right pattern. Arwi is written using Arabic script with an addition of certain diacritics and characters, which is of right-to-left pattern.

3Tamil Script

n Historical information: 100 BCq http://www.xs4all.nl/~wjsn/tekst/taalschriften.htm#QXQ

n Based on Brahmi Scriptq Like Devanagari, Malayalam, Telugu, etc.

n Left-to-right writingn Uses 65 characters and variantsq Uses combinations of them also

n Uses HTML codes 2944 to 3071q Unicode (U+0B80 U+0BFF)

n Ref: http://www.xs4all.nl/~wjsn/tamil.htm

Spoken in Tamil Nadu, Malaysia, Singapore, etc.

4Arabic Script

n Belongs to Semitic Language familyq Recorded back to thousands of years

n Right-to-left writingq Like Persian, Urdu

n Contains 28 characters and 6 vowelsn Character representation:q Initial, Middle and final forms

n Diacritical marks: Damma (/u/), Fatha (/a/), Kasrah (/i/)n Has influence on many other languages

Official language in most countries in Middle-East and North Africa.

5Arwi Script

n Outcome of cultural relations between Arabs and Tamil-speaking Muslims of Tamil Nadu

n Spread to Sri Lanka, Malaysia, Thailand, etcn Based on Arabic Scriptq Addition (13 in number)

n Right-to-left writingn Used to write variety of Islamic booksq Belief, Law, Sufism, Medicine, etc

n http://en.wikipedia.org/wiki/Arwi_language

6Arwi Scriptn Arwi script A sample page from the book titled

Sumthu Subyan

7Arwi Script

n Achievement of this script:q Has provided necessary information (both

religious and society)n People still use certain Arwi words, which were

borrowed from Arabicq Example (to note a very few): n Amma (Mother) is used as Umma (Ummun

from Arabic)n Raahat, Kithaab, Mowth, etc.

Arwi Script has helped the Muslim community to learn write Arabic text faster, which is the language of the Holy Quran.

8Status of Arwi Scriptn Arwi is still used in certain Islamic schools

(madrashas) in Tamil Nadun Some famous books are preserved in librariesn Lack of printing facility has affected the further

usage of this scriptq Few books written in Arwi have been

translated into Tamil Scriptq This shows the importance of those texts to

the publicn As per the knowledge of the author, no ARWI

font exists

9Status of Arwi Script - Wikipedia

Ref.: http://en.wikipedia.org/wiki/Arwi_language

Famous books by great scholars like Imaam Shaafi (Radiallahu Anhu - May Allah be pleased with him) and Imaam Abu Hanifa (May Allah be pleased with him) have been translated into Arabic-Tamil. Authors also indicate that decline of Arwi has caused a steady decline in the education of the women in the latter half of the 20th century. Characters mentioned as work in progress are handled in our work.

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Related Works

n Wikipedia indicates that Arwi was taught in Indonesia, Thailand, Malaysia, Myanmar and Pakistan

n Tschacher[1] notes about the use of Arwi for poem writing

n Shuayb Alim[2] indicates that Arwi was used by Malaysians in their daily life

n Few authors quote the use of Arwi in Sri Lanka

1. Tschacher. T., "How to die before dying? Sharia and Sufism in a 19th century Arabic-Tamil Poem", Panel 38, 18th European Conference on Modern South Asian Studies , at Lund, Sweden, 6 9 July 2004. http://www.sasnet.lu.se/panelabstracts/38.html

2. Shuayb Alim, "Arabic, Arwi and Persian in Sarandib and Tamil Nadu", Madras, 1993.

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Related Works

n Reasons for decline of usage of Arwi as quoted [2,3]:q Lack of printing facilitiesq Use of Urdu as the teaching medium in many

Muslim schools in Tamil Nadun Nuhman[4] quotes about discussion of having

Tamil as one of the official languages in Sri Lanka. Multiple Arabic characters are present for one Tamil character

3. http://www.armu.com/armu/works/archives/12dec1998/amc1.html [Accessed on: 22nd April 2008]

4. Nuhman MA, "Sri Lankan Muslims: Ethnic Identity within Cultural Diversity", International Centre For Ethnic Studies, Colombo, Sri Lanka, 2007.

Nuhman [7] quotes about the bill on whether to make Sinhala as the only official language. In that discussion, some speakers have quoted that Arwiused as a writing script by Muslims is Tamil language. Those speakers were stating the importance of making Tamil as one of the official languages. Nuhman [7] refers to the issues of understanding Arwi scripts by people who understand Arabic and those who understand Tamil. People who understand Arabic can read Arwi but can't understand and those who know Tamil and not Arabic can't read but if someone reads for them they can understand Arwi. Author describes about the use of Arabic script for languages like Malayalam and Bengali.

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Related Works

n Nuhman[4] indicates:q Arabic: 28 characters and 6 vowelsq Tamil: 30 letters (12 vowels and 18

consonants); Also has 216 syllabic symbols apart from basic vowels and consonants

q Joining of drastically different languages was handled

n Mohan [5] quotes the presence of many literary works in Arwi

Nuhman[4] indicates that there were 200 published and around 2000 unpublished literary works written in Arwi. Thus, two drastically different languages where combined to form a scripting language Arwi instead of developing a brand new language. Author concludes by saying that we could use any writing script to write any other languages with some modifications except for those languages like Chinese which usesideograph.

5. Mohan V., "Muslims of Sri Lanka", Aalekh Publishers, Jaipur , India, 1985.

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Arwi Books

n Religious Rulesq Maani (The Treasure) - Maapillai Lebbe Alim

@ Seyed Mohamed Ibnu Ahamed Lebbe (May Allah be pleased with him) (1816 1898) from Kayalpattinam, Tamil Nadu, India

q Sumthu Subyaann Poems:q Adabumalai (About Morale and Discipline)q Thakkasuruth (About Rules for Prayer)

Note: Shamu Sihabudeen Appa has written many poets (including Adabumalai and Thakkasuruth) in Arwi. Mapillai Lebbe Alim has written many books in Arwi.

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Tamil and Arwi Alphabets A Comparison

15

Arwi Script Available Unicode Equivalents

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Arwi Script Available Unicode Equivalentsn Dot below 0643 (Kaf) is also neededn Number representation in Arabic: (U+0661

U+0669)

n Number representation in Arabic: (U+06F1 U+06F9)

Arabic Numerals are not exactly followed in Arwi. There is slight difference between them with regards to numerals 4, 5 and 6. Sometimes, even the numeral 7 is expressed slightly different (something like the English character L).

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Arwi Script Available Unicode Equivalents

n Note that we have used Unicode characters from:q Arabic (U+0600 U+06FF)q Syriac (U+0700 U+074F) q Combinational Diacritical Marks (U+0300

U+036F) q Additionally, we did have a look at Forms-A

and Forms-B. But, none of them was used.n Arabic Presentation Forms-A (U+FE70 U+FEFF)n Arabic Presentation Forms-B (U+FB50 U+FDFF)

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Font Development

n Issues to be considered:q Needs to consider cursive nature, joining,

diacritical characters and forms of the characters

q Cater all kinds of Operating system and Editing Softwaren Rendering issues of different editing tools

q Have to consider the development of keymap which is closely related to Arabic keymap

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Font Development

n Two Approaches:q Development of a web page where people can type in

Tamil Script directly or type in English but the characters will be changed to Arwi Scriptn Constrained on the fonts available on the users

PC.q Development of a new fontn Need to install and cater for different operating

systemsn User has to learn to type using the new Arwi

Keymap.

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JavaScript based Arwi Typing Webpage

n Install necessary fontsq Windows: Install Complex script and right-to-

left languagesq Linux: Generally BD (Bidirectional) or

Multilingual Support is there by default n Featuresq Uses JavaScript (Client-Side)q Works on Windows and Linuxq Users who know typing in Tamil can type in

Tamil directly.

http://en.wikipedia.org/wiki/Help:Multilingual_support_(Indic)

At first, to enable type in Arabic or Arwi Font, Install files for complex script and right-to-left languages (including Thai) option must be enabled on the users' PC. This is done using Regional and Language Settings in ControlPanel.

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JavaScript based Arwi Typing Webpage

Expected Webpage

Virtual Keypad

This software is made using JavaScript and thus does not require any server side support. You could just get the whole code and run on any machine. This runs both on Windows and Linux machines. This software provides options for users to mix both Tamil and Arwi scripts even though that is not the normal method of writing in Arwi Script. When users types in Arwi, the character alignment becomes right-to-left.

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JavaScript based Arwi Typing Webpage

n Tamil keymap vary based on:q If we use certain fonts like Bamini or Sarukesiq If we use Unicode fonts like Latha font

n JavaScript based Webpage permits both the keymap options using the radio button for selection

n Users who are not aware of Tamil typing, can use the virtual keypad provided.

n Arwi can also be typed using virtual keypad. No need for Arwi keymap setup on the PC

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JavaScript based Arwi Typing Webpage

n Scripting changes from left-to-right to right-to-left once user decides to go to Arwi typing

n Issues faced:q Windows Vista: Webpage works as expected on

Internet Explorer (Version: 7.0.6000.16386) and Firefox (Version: 2.0.0.13)

q Windows XP: n Internet Explorer

(6.0.2900.2180.xpsp_sp2_rtm.040803-2158)n Problem displaying: 0656 (Arabic Subscript Alef),

0657 (Arabic Inverted Damma), 065C (Arabic Vowel Sign Dot Below), 0328 (Combining Ogonek)

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JavaScript based Arwi Typing Webpage

n Windows XP: q Upgraded Internet Explorer to 7.0.5730.13 version:n Same problems persist

q Firefox 2.0.0.13 n 0656, 0657 and 0328 did not appear properly on

the virtual keypadn 0746 (Syriac three dots below) and 0734 (Syriac

Zqapha below) did not join with the previous character and appeared separately

n General diacritical marks which belong to Arabic Script (Like Fathah, Damma, etc) needed increase in size, to appear properly in Virtual keypad

After finding that few characters dont appear properly on Windows XP, we did check for the presence of the Unicode character in Windows XP and compare that with Windows Vista. This is done using Charmap with Advanced view. We did select Unicode subrange in "Group by" option and selected Combining Diacritical Marks and Arabic to verify for the presence of the Unicode characters. We could conclude that few characters were not present in Windows XP and thus could not be displayed.

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JavaScript based Arwi Typing Webpagen Joining of Syriac character was done using Unicode

character 0640 (hyphen), 200D (Zero Width Joiner) and 070F (Syriac Abbreviation Mark):

document.write('');

Internet Explorer Win XP Firefox 2.0.0.16 Win XP

Internet Explorer (Version: 6.0.2900.2180.xpsp_sp2_rtm.040803-2158) does not display few characters like those with Unicode numbers 0656 (Arabic Subscript Alef), 0657 (Arabic Inverted Damma), 065C (Arabic Vowel Sign Dot Below), 0328 (Combining Ogonek, part of Combining Diacritical Marks) properly. Even after upgrading the Internet Explorer to 7.0.5730.13 version, same problems persist.

We did download the Arial Font from the Internet (Arial32.exe) and used it with Windows XP. After doing this, Unicode character 0328 did work fine but did not appear properly in the display.

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JavaScript based Arwi Typing Webpagen In Mozilla Firefox 3, the Arabic

HTML appears better expect for U+0657 character. Also, Syrian characters need not include \u0640\u200d\u070f to join properly

Firefox 3.0.1 Win XP

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JavaScript based Arwi Typing Webpage

n SuSe 10.2 (Firefox 2.0.0.6):q Appearance issuesn Did not appear properly on the virtual keypad,

but worked fine while typing: q Characters that did not workn 0657 and 0328 appeared as a separate

character and did not join with the previous character

n Unicode characters like 06E9, 065C, 0734 and 0746 did not appear properly in virtual keypad

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JavaScript based Arwi Typing Webpagen In SuSe 10.2, with Firefox 3.0.1, Webpage worked fine. There is no

need for U+0640, U+200D and U+070F

n Further Analysis:q Windows Vista has more Unicode characters compared to

Windows XPn Can be verified using Charmap

q Presence or usage of Syriac and few other combinational diacritical marks have problems appearing on the virtual keypad and also in the text

Firefox 3.0.1 OpenSuSe 10.2

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JavaScript based Arwi Typing Webpage

n In Safari Version 3.1.2 (525.21) on Windows XP:q All the characters seem to work fine both on

the virtual keypad display and when used.

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Tamil Keyboard - ComparisonTamil Latha Unicode

Tamil Bamini OR Sarukesi Non-Unicode

Differences in Keypad for Unicode and non-unicode based Tamil font has been a concern for those who wish to type in Tamil. Those who have learnt Tamil using Typewriter find it difficult to move on to Unicode based Tamil Fonts. There exists certain software that could convert text from one font to another, just make sure that the rendering works fine.

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Arabic Keyboard - Proposed ArwiArabic Keyboard

Arwi Keyboard

We have designed the keypad for Arwi to be similar to that of Arabic, so as to make it easier for those who already knew Arabic Typing. If a user does not know how to type in Tamil or Arwi, he could use the keypad provided in the software.

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Font Rendering Editor Toolsn Rendering of Arabic, Tamil and Arwi characters vary

between Notepad, WordPad, Microsoft Word, OpenOffice.org tools, etc

n Table shows characters typed with Webpage and copied and pasted in different editors

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Font Rendering Editor Toolsn Editor Tool Issues:q Authors in [6] describe about rendering problems for

Unicode characters in various Indian Languages (including Tamil). They also quote that the Zero Width Non Joiner (ZWNJ) are permitted by Wordpad but not by Notepad.

q Zero Width Joiner (ZWJ) is rendered properly by Wordpad but not by Notepadn U+200D (Keep words closer and make then join)

q Wordpad 6.0 seems to render Arwi better than Notepad 6.0, Microsoft Word 2003 and OpenOffice.org Writer 2.1

6. http://acharya.iitm.ac.in/multi_sys/unicode/render/ren_07.php [Accessed on: 23rd April 2008]

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Font Rendering Issues

n Characters coupled with characters such as the zero width joiner, zero width non-joiner etc., can cause serious headaches to the text processing applications if the displayed text was composed using these codes [7]

n Zero width glyphs are very important for Indian language fonts [7]

7. http://acharya.iitm.ac.in

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Font Rendering Issues

n Example showing how Tamil website (Unicode) appears in different browsers [8]

Internet Explorer 7 Mozilla Firefox 2.0.0.16

Mozilla Firefox 3.0.1

8. http://zeyarath.blogspot.com

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Font Development - fontforge

n Operating System used: SuSe 10.2n FontForge (2008032 2 Mar 2008) software

is used to develop Arwi fontn DejaVuSans font was used as the base fontn After appropriate changes Arwi font was

generated as TTF font and tested on Linux and Windows platform with various Editor Tools.

Users can make HTML pages using ARWI font by including the tag

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fontforge Characters Addedn We have added new characters needed for

Arwi font to the DejaVuSans Unicode fontn For each character, we need to have medi,

init and final forms

DejaVuSans.ttf font present in the /usr/share/fonts/truetype folder was selected as the base font. Installation of fontforge software on SuSe machine was straight forward with rpm (rpm ivf fontforge-i386.rpm). In fontforge, when we open the DejaVuSans font, we could see that each character is shown as two cells. The cell on the top indicates the character and the bottom cell indicates the drawing or representation of the character.

To add new glyphs to the given font, we need to add slot and proceed to enter the glyph and then link this glyph to the base character. This is done as below: Encoding Add Encoding Slots (Indicate the number of glyphs you want to add)

Select each one of the newly added slot and do the following:

Element Glyph Info: For a Glyph (Unicode Name: uni06A1.init; Unicode Value: -1)

For a base character (Unicode Name: uni06A1; Unicode Value: U+06a1)

Then click 'Set From Name' (in Glyph Info) and click 'Ok'.

For each and every glyph created, we need to click File Generate Fonts Save as True type. Note: User rights are to be considered when saving the fonts in the respective folders.

Make sure that the glyph is added to the substitutions option in the main or base Unicode font.

After doing the above, if we wish to see the impact on OpenOffice.org Writer, we need to close OpenOffice.org Writer and re-open it. Also, make sure the keymap entry is removed and added again (if there needs to be a change in the keymap).

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fontforge Characters Added

Example of Initial, Middle, and Final Forms

The name of the font can be changed using Font Info under Element menu in fontforge software. To generate the font, use Generate Fonts option underFile menu and then select TTF type. It was noted that we need to close the fontforge before having the font to be available for typing in any editorsoftware.

For each character, we have substitutions like the initial, middle and final one. We need to link the substitution glyph with the original base character. This is done using Element Glyph Info Substitutions. Select the appropriate substitution like 'init' or 'medi' or 'fina' and link to the newly created glyph.

'medi': Medical forms in Arabic Lookup 8 subtable

'fina': Terminal forms in Arabic Lookup 9 subtable

'init': Initial forms in Arabic Lookup 10 subtable

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Keyboard Layout Setup - Windows

n When someone wishes to type using Arwi language, he needs to add Arwi language to the language bar

n Software used: Keyboard Layout Managern No Arwi layout existsn Arabic(Yemen) used for testing

From the glyph, we can see to which base character it is linked using: Element Show Dependent Substitutions.

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Keyboard Layout Setup - Windows

n Select the appropriate Unicode character according to the Arwi Keyboard setup required

Using the Keyboard Layout Manager software, we provide the users with the Keyboard Layout file, which is named as ArabuTamil.klm2000. To install the given ArabuTamil keypad on to any Windows machine, users need to use the Keyboard Layout Manager Software. Install the software and open the software. Then, click New under Keyboards and in the layout type"ArabuTamil" and select any language that you are not using or not planning to use (we have selected Arabic(Yemen)). Then click on Create. Once, the Option is created, select the ArabuTamil option and click Edit. Click on Import and select the ArabuTamil.klm2000 file given. Then, click Open followed by OK twice. Finally, you need to Confirm changes. Then, in your language bar, you will find the necessary ArabuTamil (as Arabic(Yemen)) option present. Now that you can type ArabuTamil in any editor software by selecting ArabuTamil in the language bar.

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Keyboard Layout Windows - Issues

n Diacritics alignment was a problem when the character from Syriac was used with Arabic and Arabic supplements

n Syriac Qushshaya (U+0741 dot above) and Syriac Rukkakha (U+0742 dot below) can be used with only specific Syriac letters [9]

n Difference in alignment between Opera, Mozilla Firefox and Internet Explorer

9. The Unicode Standard - Chapter 8

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Keyboard Layout Linux

n Check for language supportq locale -a

n To make the font as default font, add these line to your profile (~/.profile)q export LANG=en_US.UTF-8q export LANG=ar_SA.UTF-8q To make change into effect, press

Ctrl+Alt+Backspace (login again)

In order to verify whether Unicode is enabled on the machine, locale command was used. You could use locale a and find out what are the languages that are supported by the machine. To change the locale settings for your account, open the ~/.profile file present in your home folder and add the line

export LANG=en_US.UTF-8

If you wish to make the default font to be an Arabic font, you could change the LANG option as to something like ar_SA.UTF-8, which stands for the Unicode of Arabic (Saudi Arabia). Setting the LANG option to ar_SA.UTF-8 seems to make the Firefox browser turn to Arabic language in SuSe 10.2. In order to make the change in profile to take effect, we need to login again. This could be done by clicking Ctrl+Alt+BackSpace.

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Keyboard Layout vim - Linux

n Vim keymaps are present at:q /usr/share/vim/current/keymapq Keymap exists for Unicode and non-Unicode.q Arabic Unicode: arabic_utf-8.vim

n Creating Arwi Keymapq Arwi is related to Arabic so a copy of Arabic Unicode

was madeq New file is named as: arwi_utf-8.vimq This file maps characters of keyboard with

hexadecimal and decimal representation of Unicode characters

The necessary keymaps for vim is present in /usr/share/vim/current/keymap folder. For each language, you could find keymap for both Unicode and non-Unicode characters. The Unicode keymap for Arabic language is arabic_utf-8.vim.

In order to write our own keymap, we could copy the arabic_utf-8.vim file into arwi_utf-8.vim. The contents of this file indicate the link between the characters of the keyboard with that of the hexadecimal and decimal representation of Unicode characters. You could provide a comment to indicate what each character means.

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Keyboard Layout vim - Linuxlet b:keymap_name = "arwi"loadkeymapq " (1590) - DADw " (1589) - SADn The character 'q' (Lowercase) is mapped to Arabic Dad

which is represented in hexadecimal and decimal as 0x0636 and 1590 respectively

n Once the keymap is ready, you could type in the vim using the statement as set keymap=arwi, after pressing Esc+:

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Keyboard Layout Input Locale - Linux

n Input locales:q Personal Settings (Configure Desktop) Regional &

Accessibility Keyboard Layoutq Select the language from Available layout and click

Addn Creating new Arwi Keymapq Go to xkb folder in either /usr/share/X11 or /etc/X11

or /usr/X11R6/lib/X11 folderq Add an entry (anywhere) under the ! layout section of

the base.lst file, which is present in /usr/share/X11/xkb/rules folder

Note: We have used /usr/share/X11/xkb folder.

If you want enable the language bar in the task bar of the desktop, you need to do the following steps:

Click Personal Settings (Configure Desktop).

Select Regional & Accessibility.

Select Keyboard Layout.

Select the language that you want to present on the language bar from the Available Layout and click Add >>.

With these steps, you can click on the language bar and type in different languages. But, this will work only for those languages from which the keymap is already available. For this work, we wish to design a new Keymap for the Arwi script.

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Keyboard Layout Input Locale - Linux

n The base.lst file is listed alphabetically on the Keyboard Layout (Regional & Accessibility)

n Add the entry for the Arwi script in the base.xmlfile which is present in /usr/share/X11/xkb/rules folder. Copy the Arabic one and change , & tags

In order to design a new keymap, we need to go to the /usr/share/X11/xkb or /etc/X11/xkb or /usr/X11R6/lib/X11/xkb folder. Different Linux variants have different folders for the xkb. We then need to add an entry under the ! layout section of the base.lst file, which is present in /usr/share/X11/xkb/rules folder.

The next step is to add the entry for the Arwi script in the base.xml file which is present in /usr/share/X11/xkb/rules folder.

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Keyboard Layout Input Locale - Linux

n The keymap needs to be added to /usr/share/X11/xkb/symbols folder

n Copy the existing ara (Arabic) to arwi (Arwi)n AE stands for 1234 row in keyboardn AD stands for QWERT row in keyboardn AC stands for ASDF row in keyboardn AB stands for ZXCV row in keyboardq AB01 stands for z characterq AB02 stands for x character and so onq TLDE stands for ~ character

Then, we have to make the actual keymap available in the /usr/share/X11/xkb/symbols folder. After the reserved keyword "key" we use some representation to indicate each rows of the keyboard. AE stands for the row with numbers 1, 2, 3, . AE01 indicates the first key, which is the number 1 key. AE02 indicates the second key, which the number 2 key and so on. AD stands for the row starting as QWERT. AD01 represents the key "q". AC stands for the row starting as ASDF. AC01 represents the key "a". AB stands for the row starting as ZXCV. AB01 represents the key "z". In the keymap, the lowercase representation and uppercase representation are separated by a comma.

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Keyboard Layout Linuxn After changing keymap file (in

/usr/share/X11/xkb/symbols):q Remove keymap from the layout q Add again from Available layout (Regional &

Accessibility) and click Apply

Whenever we make a change to the keymap file (present in the /usr/share/X11/xkb/symbols folder), we need to remove the keymap from the layout and add then again from the Available layout and click Apply. Then, only these changes will come to effect.

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Keyboard Layout Linuxn Keymap can be temporarily enabled using

anyone of the commands (Example, arwikeymap):q setxkbmap symbols 'arwi'q setxkbmap symbols arwiq setxkbmap layout 'arwi'q setxkbmap layout arwi

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Issues Faced Rendering Differences

n OpenType capable text rendering engines:q OpenOffice.org and SIL's XeTeX use IBM's International

Components for Unicode (ICU)q QT4 has its own engine based on HarfBuzzq GTK+ uses Pango which is using HarfBuzz internallyq New TeX engine LuaTeXhas its own OpenType engineq Microsoft has its Uniscribe engineq Adobe has a hybrid Apple Advanced Typography (AAT)-

OpenType engine used on Mac OS X.q Conclusion: One engine shared between GTK/QT4; another

in OpenOffice.org; Microsoft has its own.

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Issues Faced

n Further, new diacritical characters were addedn Joining problems of the diacritical character to the

previous character was notedn Testing was done using:q SuSe 10.2: Did not display properlyn OpenOffice.org 2.0.4 build 2.0.4.7n Opcion Font Viewer 1.1.1

q Ubuntu 7.04: Did not display properlyq Ubuntu 8.04: n OpenOffice.org 2.4.0, GTK+ Editor, gedit, kate, Opcion Font

Viewer Worked finen QT Editor Diacritics not placed properly

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Issues Facedn Simple test was done by copying the existing

diacritical character at a different position and testing with different tools

Specimen Font

Previewer

PDF by XeTeX& ConTeXt

53

Issues Faced

n Testing on Ubuntu 8.04

Acknowledgements: Author wishes to acknowledge the help offered by Mr. Mohammed Khaled [www.eglug.org].

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Characters that needs to be addedn Make sure that the initial, final and middle glyphs of

these Characters are present:q 0686, 068A, 068D, 0693, 0694, 06A3, 06B9, 06BA,

06A0, 06FB, 0767n Diacritical Marks that should be verified:q 0653, 0656, 0657, 0670, 0746q 0734 needs to be checked if it is just the mirror of

0657n Character that needs to be added:q 0643 WITH A DOT BELOWq 0635 WITH A DOT BELOWq Number 7: Similar to the English character L

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Further Referenceshttp://www.arabeyes.org/download/download/3rd/arabic.xkbhttp://www.vim.org/htmldoc/arabic.htmlhttp://countrystudies.us/sri-lanka/38.htm [Accessed on: 22nd April 2008]http://www.armu.com/armu/works/archives/12dec1998/amc1.html [Accessed on: 22nd April 2008]Tschacher, Arwi (Arabic-Tamil) An Introduction [Accessed on: 23rd April 2008], http://web.archive.org/web/20040822180630/www.fas.nus.edu.sg/journal/kolam/vols/kolam5&6/1AOldLit/Arwi.htm http://www.klm32.com/ [Accessed on: 22nd April 2008]http://acharya.iitm.ac.in/multi_sys/unicode/render/ren_07.php [Accessed on: 23rd April 2008]

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Conclusion

n This work has tried to address the issue of lack of font for Arwi Script

n Need to work closely with researchers in Unicode area to bring Arwi as part of Unicode characters

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Arwi: Case study of Arabic, Syriac and Diacritical Unicode characters

Thank You Questions are most welcome

Acknowledgements: Author wishes to acknowledge the help offered by Dr. Jaidi, Mr. Mohammed Khaled, Dr. Hussain Miya, Mr. Shah Nawas, Ms. Daphne, Ms. Rosyzie, Mr. Hong, Mr. Arif, Ms. Rosnah and Mr. Ashraf.