In for example Swedish, it's a distinct letter of the alphabet, representing a distinct vowel.
In German, it's the letter "A" with an umlaut mark, which is not a distinct letter of the alphabet, but it is a distinct vowel.
And in French, it's the letter "A" with a diaresis mark, which neither makes it a distinct letter of the alphabet, nor a distinct vowel, it's just a mark that signifies that two adjacent vowels should not be pronounced as a diphtong.
"A" is a distinct letter and distinct vowel.
"Á" is also a distinct letter and a distinct vowel, and not an "A" with an acute accent.
"À" exists in Icelandic in (very few) French loan-words and is not a distinct letter nor a distinct vowel, instead it's viewed as an "A" with a grave accent.
(And this is why lexical sorting has to be highly localized. I still think Turkish has the funniest gotcha where "I" and "i" aren't the upper/lower-case of the same letter, it's the uppercase of one letter, and the lowercase of a completely different letter.)
ı (capital I; the letter is pronounced as a schwa), and:
i (capital İ)
This is why upper- and lowercasing of letters is also locale-dependant (in addition to collation).
The umlauts are distinct letters of the German alphabet. The English Wikipedia says so but still lists them as special characters which is confusing at best. The German Wikipedia just lists the umlauts as ordinary characters.
>German uses three letter-diacritic combinations (Ä/ä, Ö/ö, Ü/ü) using the umlaut and one ligature (ß (called Eszett (sz) or scharfes S, sharp s)) which are officially considered distinct letters of the alphabet.[1]
I believe there are just two cases:
- A umlaut: German, Swedish, etc.
- A with diaeresis: French, Catalan, etc.
It is important to distinguish both cases because they differ at least in collation and typography.
In a German dictionary A with diaeresis should be always treated like an A, while A umlaut should be treated according to the different collation standards that exist in German. In a German font the dots are closer to the letter than in a French font.
[1] https://en.wikipedia.org/wiki/German_orthography#Alphabet
When reciting the alphabet German school kids don't add the umlauts (at least I didn't – I don't think that has changed in the last decades) and if you ask someone how many letters the alphabet has they will answer "26" without hesitation while in Sweden they are treated as distinct characters of the alphabet in every sense.
Yes, this alone is confusing. My point is that it is even more complicated because strictly the standard only applies to umlauts but not to letters with diaeresis. Unicode offers a way to treat these two cases differently utilizing the combining grapheme joiner (CGJ).
>> The CGJ can also be used in German, for example, to distinguish in sorting between “ü” in the meaning of u-umlaut, which is the more common case and often sorted like <u,e>, and “ü” in the meaning u-diaeresis, which is comparatively rare and sorted like “u” with a secondary key weight. [1, page 850]
> When reciting the alphabet German school kids don't add the umlauts (at least I didn't – I don't think that has changed in the last decades) and if you ask someone how many letters the alphabet has they will answer "26" without hesitation while in Sweden they are treated as distinct characters of the alphabet in every sense.
You have a point here and maybe the English Wikipedia isn't so wrong in listing them as special characters. Being special doesn't make A umlaut a funky A though. It still is a letter in it's own right.
[1] Unicode Standard 10.0: http://www.unicode.org/versions/Unicode10.0.0/UnicodeStandar...
There is no dedicated key on computer keyboard for it, but you are supposed to remember it's a unit when capitalizing, for example IJmuiden.
Meanwhile, the Swedish alphabet has 29 letters. Since 2006. Before 2006, "W" wasn't considered a letter of the alphabet, since it was just a double "V", and only existed in German and English loan-words and names.
So before that, this would have been the correct sort order of some names: "Valter, William, Viktor", but these days they would probably be sorted like "Valter, Viktor, William"
Nope. :-)
Because in Swedish, ÅÄÖ are distinct letters of the alphabet, they are not treated different than any other vowel, they're not variants of base letters or anything like that.
I was wrong about ÄÖÜ not being part of the German alphabet. They are, but they're not letters (Buchstaben), they're umlauts. So the Swedish alphabet contains 29 letters, but the German alphabet contains 26 letter, 3 umlauts, and the Eszett.
In the end, it's all arbitrary as fuck, with tons of historical reasons for the way things are, and god help the localization engineer who thinks it's all easy peasy. :-)
I can't think of an example of a French word where an A takes a diairesis. Can you give one?
Wikipedia has this to say:
En français, le tréma peut se placer sur les voyelles e, i, u (et y dans des noms propres) pour indiquer, normalement, que la voyelle qui précède doit être prononcée séparément et ne fait pas partie d'un digramme.
(Super uncommon, yes, but it exists)
The case is slightly less clear for W.