Turkish dotted and dotless I

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Two distinct versions of the letter I, dotted and dotless, are used in the Turkish alphabet, which is a variant of the Latin alphabet. Dotted and dotless "i" are used in the Turkish, Azerbaijani, Crimean Tatar and Tatar languages.

I ı is the letter which describes the close back unrounded vowel sound (/ɯ/). Neither the upper or lower case versions have a dot.

İ i describes the variant close front unrounded vowel sound (/i/). Both the upper and lower case versions have a dot.

Example: İstanbul (starts with an i sound, not an ı).

In computing

In Unicode is a lower case letter dotless i (ı). U+0130 (İ) is capital i with dot. IS0-8859-9 has them at positions 0xDD and 0xFD respectively. In normal typography, when lower case i's is combined with other diacritics, the dot is generally removed before the diacritic is added; however, Unicode still lists the equivalent combining sequences as including the dotted i, since logically it is the normal dotted i character that is being modified.

Software handling Unicode uppercasing and lowercasing will generally change ı to I and İ to i but unless it is specifically set up for Turkish it will change I to i and i to I rather than I to ı and i to İ. This means that the effect of uppercasing followed by lowercasing can be different from the effect of just lowercasing for texts that contain these characters.

In the Microsoft Windows SDK, beginning with Windows Vista, several relevant functions have a NORM_LINGUISTIC_CASING flag, to indicate that for Turkish and Azeri locales, I should map to ı and i to İ.

In the LaTeX typesetting language the dotless i can be written with the backslash-i command: \i.

References

http://www.unicode.org/charts/PDF/U0100.pdf
Tex Texin, [Internationalization for Turkish: Dotted and Dotless Letter "I"], accessed 15 Nov 2005

Latin alphabet

Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz

Modified characters Àà Ȁȁ Áá Ââ Ầầ Ấấ Ẫẫ Ẩẩ Ậậ Ãã Ää Ǟǟ Āā Ăă Ằằ Ắắ Ẵẵ Ặặ Ẳẳ Ȧȧ Ǡǡ Ạạ Åå Ḁḁ Ǻǻ Ȃȃ Ąą Ǎǎ Ảả Aʾẚ Ⱥ Ḃḃ Ḅḅ Ḇḇ ƀ Ɓɓ Ƃƃ Ćć Ĉĉ Ċċ Çç Ḉḉ Čč Ƈƈ Ȼȼ Ďď Ḋḋ Ḍḍ Ḏḏ Ḑḑ Ḓḓ Đđ Ɖɖ Ɗɗ Ƌƌ Èè Ȅȅ Éé Êê Ềề Ếế Ễễ Ệệ Ểể Ḛḛ Ëë Ēē Ḕḕ Ḗḗ Ĕĕ Ėė Ẹẹ E̩e̩ Ȇȇ Ȩȩ Ḝḝ Ęę Ěě Ẽẽ Ḙḙ Ẻẻ Ḟḟ Ƒƒ Ǵǵ Ĝĝ Ḡḡ Ğğ Ġġ Ģģ Ǧǧ Ǥǥ Ɠɠ Ĥĥ Ḣḣ Ḥḥ Ḧḧ Ȟȟ Ḩḩ Ḫḫ H̱ẖ Ħħ Ƕƕ Iı Ìì Ȉȉ Íí Îî Ĩĩ Ḭḭ Ïï Ḯḯ Īī Ĭĭ Ȋȋ Įį Ǐǐ İi Ịị Ỉỉ Ɨɨ ɟ Ĵĵ J̌ǰ Ḱḱ Ǩǩ Ķķ Ḳḳ Ḵḵ Ƙƙ Ĺĺ Ļļ Ľľ Ḷḷ Ḹḹ Ḻḻ Ḽḽ Ƚƚ Łł ɫ Ḿḿ M̃m̃ Ṁṁ Ṃṃ Ǹǹ Ńń N̈n̈ Ññ Ņņ Ňň Ṅṅ Ṇṇ Ṉṉ Ṋṋ Ŋŋ Ɲɲ Ƞƞ Òò Ȍȍ Óó Őő Ôô Ồồ Ốố Ỗỗ Ộộ Ổổ Õõ Ṍṍ Ṏṏ Ȭȭ Öö Ȫȫ Ōō Ṑṑ Ṓṓ Ŏŏ Ȏȏ Ǒǒ Ȯȯ Ȱȱ Ọọ O̩o̩ Ǫǫ Ǭǭ Ơơ Ờờ Ớớ Ỡỡ Ợợ Ởở Ỏỏ Ɵɵ Øø Ǿǿ Ṕṕ Ṗṗ P̃p̃ Ƥƥ ᵽ Ȑȑ Ŕŕ Ŗŗ Řř Ȓȓ Ṙṙ Ṛṛ Ṝṝ Ṟṟ ɽ Śś Ṥṥ Ŝŝ Şş Șș Šš Ṧṧ Ṡṡ Ṣṣ Ṩṩ S̩s̩ ȿ T̈ẗ Ţţ Țț Ťť Ṫṫ Ṭṭ Ṯṯ Ṱṱ Ŧŧ Ⱦ Ƭƭ Ʈʈ Ùù Ȕȕ Úú Űű Ûû Ũũ Ṹṹ Ṵṵ Üü Ṳṳ Ǜǜ Ǘǘ Ǖǖ Ǚǚ Ūū Ṻṻ Ŭŭ Ụụ Ůů Ȗȗ Ųų Ǔǔ Ṷṷ Ủủ Ưư Ừừ Ứứ Ữữ Ựự Ửử ʉ Ṽṽ Ṿṿ Ẁẁ Ẃẃ Ŵŵ Ẅẅ Ẇẇ Ẉẉ W̊ẘ Ẋẋ Ẍẍ Ỳỳ Ýý Ŷŷ Ÿÿ Ỹỹ Ȳȳ Ẏẏ Y̊ẙ Ỵỵ Ỷỷ Ƴƴ Źź Ẑẑ Żż Ẓẓ Žž Ẕẕ Ƶƶ Ȥȥ ɀ

ɑ Ææ Ǽǽ Ǣǣ Ðð Ǝǝ Əə Ɛɛ Ƒƒ Ɩɩ Ȝȝ Ɣɣ Ƣƣ Kʻĸ ƛ Ɔɔ Œœ Ȣȣ Ʀʀ Ↄ Ʃʃ Þþ Ʊʊ ʌ Ʋʋ Ⅎ Ɯɯ ƿǷ ɥ Çç ɀ Ʒʒ Ǯǯ Ƹƹ Ƨƨ Зз Чч Ƽƽ Ƅƅ ʔ/Ɂ ǀ ǁ ǂ ǃ ʇ ʖ ʗ ʘ

Digraphs Bh bh Ch ch C̱h c̱h CÖ cö Cs cs Cu cu Dd dd Dh dh Dj dj Dx dx Dz dz Dž dž Ff ff Gb gb Gh gh Gi gi Gn gn Gy gy Hs hs Hu hu IJ ij Jö jö Kh kh Kp kp Ku ku Lj lj Lh lh Ll ll Ly ly Mb mb Mp mp Nd nd Ng ng Nh nh Nj nj Nk nk Ns ns Nt nt Ny ny Nz nz Ph ph Qu qu Rd rd Rh rh Rl rl Rn rn Rr rr Rt rt Sh sh Sv sv Sy sy Sz sz Th th Tj tj Tr tr Ts ts Tx tx Tz tz Wh wh Xh xh Xö xö Yh yh Yk yk Zh zh Zs zs Zv zv

Trigraphs Dzs dzs Ngb ngb Ngh ngh Ngk ngk Nkp nkp Nth nth Nyk nyk Rnd rnd Sch sch

Quadrigraphs Nyng nyng

Stylistic variants Carolingian G insular G ({{unicode r rotunda long s ({{unicode

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Latin alphabet	Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz
Modified characters	Àà Ȁȁ Áá Ââ Ầầ Ấấ Ẫẫ Ẩẩ Ậậ Ãã Ää Ǟǟ Āā Ăă Ằằ Ắắ Ẵẵ Ặặ Ẳẳ Ȧȧ Ǡǡ Ạạ Åå Ḁḁ Ǻǻ Ȃȃ Ąą Ǎǎ Ảả Aʾẚ Ⱥ Ḃḃ Ḅḅ Ḇḇ ƀ Ɓɓ Ƃƃ Ćć Ĉĉ Ċċ Çç Ḉḉ Čč Ƈƈ Ȼȼ Ďď Ḋḋ Ḍḍ Ḏḏ Ḑḑ Ḓḓ Đđ Ɖɖ Ɗɗ Ƌƌ Èè Ȅȅ Éé Êê Ềề Ếế Ễễ Ệệ Ểể Ḛḛ Ëë Ēē Ḕḕ Ḗḗ Ĕĕ Ėė Ẹẹ E̩e̩ Ȇȇ Ȩȩ Ḝḝ Ęę Ěě Ẽẽ Ḙḙ Ẻẻ Ḟḟ Ƒƒ Ǵǵ Ĝĝ Ḡḡ Ğğ Ġġ Ģģ Ǧǧ Ǥǥ Ɠɠ Ĥĥ Ḣḣ Ḥḥ Ḧḧ Ȟȟ Ḩḩ Ḫḫ H̱ẖ Ħħ Ƕƕ Iı Ìì Ȉȉ Íí Îî Ĩĩ Ḭḭ Ïï Ḯḯ Īī Ĭĭ Ȋȋ Įį Ǐǐ İi Ịị Ỉỉ Ɨɨ ɟ Ĵĵ J̌ǰ Ḱḱ Ǩǩ Ķķ Ḳḳ Ḵḵ Ƙƙ Ĺĺ Ļļ Ľľ Ḷḷ Ḹḹ Ḻḻ Ḽḽ Ƚƚ Łł ɫ Ḿḿ M̃m̃ Ṁṁ Ṃṃ Ǹǹ Ńń N̈n̈ Ññ Ņņ Ňň Ṅṅ Ṇṇ Ṉṉ Ṋṋ Ŋŋ Ɲɲ Ƞƞ Òò Ȍȍ Óó Őő Ôô Ồồ Ốố Ỗỗ Ộộ Ổổ Õõ Ṍṍ Ṏṏ Ȭȭ Öö Ȫȫ Ōō Ṑṑ Ṓṓ Ŏŏ Ȏȏ Ǒǒ Ȯȯ Ȱȱ Ọọ O̩o̩ Ǫǫ Ǭǭ Ơơ Ờờ Ớớ Ỡỡ Ợợ Ởở Ỏỏ Ɵɵ Øø Ǿǿ Ṕṕ Ṗṗ P̃p̃ Ƥƥ ᵽ Ȑȑ Ŕŕ Ŗŗ Řř Ȓȓ Ṙṙ Ṛṛ Ṝṝ Ṟṟ ɽ Śś Ṥṥ Ŝŝ Şş Șș Šš Ṧṧ Ṡṡ Ṣṣ Ṩṩ S̩s̩ ȿ T̈ẗ Ţţ Țț Ťť Ṫṫ Ṭṭ Ṯṯ Ṱṱ Ŧŧ Ⱦ Ƭƭ Ʈʈ Ùù Ȕȕ Úú Űű Ûû Ũũ Ṹṹ Ṵṵ Üü Ṳṳ Ǜǜ Ǘǘ Ǖǖ Ǚǚ Ūū Ṻṻ Ŭŭ Ụụ Ůů Ȗȗ Ųų Ǔǔ Ṷṷ Ủủ Ưư Ừừ Ứứ Ữữ Ựự Ửử ʉ Ṽṽ Ṿṿ Ẁẁ Ẃẃ Ŵŵ Ẅẅ Ẇẇ Ẉẉ W̊ẘ Ẋẋ Ẍẍ Ỳỳ Ýý Ŷŷ Ÿÿ Ỹỹ Ȳȳ Ẏẏ Y̊ẙ Ỵỵ Ỷỷ Ƴƴ Źź Ẑẑ Żż Ẓẓ Žž Ẕẕ Ƶƶ Ȥȥ ɀ
	ɑ Ææ Ǽǽ Ǣǣ Ðð Ǝǝ Əə Ɛɛ Ƒƒ Ɩɩ Ȝȝ Ɣɣ Ƣƣ Kʻĸ ƛ Ɔɔ Œœ Ȣȣ Ʀʀ Ↄ Ʃʃ Þþ Ʊʊ ʌ Ʋʋ Ⅎ Ɯɯ ƿǷ ɥ Çç ɀ Ʒʒ Ǯǯ Ƹƹ Ƨƨ Зз Чч Ƽƽ Ƅƅ ʔ/Ɂ ǀ ǁ ǂ ǃ ʇ ʖ ʗ ʘ
Digraphs	Bh bh Ch ch C̱h c̱h CÖ cö Cs cs Cu cu Dd dd Dh dh Dj dj Dx dx Dz dz Dž dž Ff ff Gb gb Gh gh Gi gi Gn gn Gy gy Hs hs Hu hu IJ ij Jö jö Kh kh Kp kp Ku ku Lj lj Lh lh Ll ll Ly ly Mb mb Mp mp Nd nd Ng ng Nh nh Nj nj Nk nk Ns ns Nt nt Ny ny Nz nz Ph ph Qu qu Rd rd Rh rh Rl rl Rn rn Rr rr Rt rt Sh sh Sv sv Sy sy Sz sz Th th Tj tj Tr tr Ts ts Tx tx Tz tz Wh wh Xh xh Xö xö Yh yh Yk yk Zh zh Zs zs Zv zv
Trigraphs	Dzs dzs Ngb ngb Ngh ngh Ngk ngk Nkp nkp Nth nth Nyk nyk Rnd rnd Sch sch
Quadrigraphs	Nyng nyng
Stylistic variants	Carolingian G insular G ({{unicode r rotunda long s ({{unicode

Turkish dotted and dotless I

In computing

See also

References