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Doc: additional info about issue #106: It is unclear how and where letter groups like B and H are defined

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Valdis Vitolins
2017-11-26 23:12:40 +02:00
parent 4c98f5ffae
commit 6b0bd22909
1 changed files with 14 additions and 5 deletions
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docs/dictionary.md
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@@ -198,10 +198,10 @@ translation rules and spoken with English phonemes.
|-------------|-------------|
| `_` | Beginning or end of a word (or a hyphen). |
| `-` | Hyphen. |
| `A` | Any vowel (the set of vowel characters may be defined for a particular language). |
| `C` | Any consonant. |
| `B H F G Y` | These may indicate other sets of characters (defined for a particular language). |
| `L<nn>` | Any of the sequence of characters defined as a letter group (see above). |
| `A` | Any vowel<sup>1</sup>. |
| `C` | Any consonant <sup>2</sup>. |
| `B H F G Y` | These may indicate other sets of characters<sup>3</sup>. |
| `L<nn>` | Any of the sequence of characters defined as a letter grup. |
| `D` | Any digit. |
| `K` | Not a vowel (i.e. a consonant or word boundary or non-alphabetic character). |
| `X` | There is no vowel until the word boundary. |
@@ -211,9 +211,18 @@ translation rules and spoken with English phonemes.
| `\xxx` | Character is written as by 3 digit octal value of `xxx`|
| `@` | One syllable (i.e. at least one vowel or diphthong) |
The sets of letters indicated by `A`, `B`, `C`, `E`, `F` and `G` may be defined
1. The set of these vowel characters may be redefined for a particular language.
2. The set of these consonant characters may be redefined for a particular language.
3. The sets of letters indicated by `A`, `B`, `C`, `E`, `F` and `G` may be defined
differently for each language.
* (Re)definition of letter groups is done [in tr_languages.c](../src/libespeak-ng/tr_languages.c),
calling `SetLetterBits()` function from (usually) `NewTranslator()` function.
Note, that letters should be stored as array of chars, thus multibyte
unicode letters should be transposed using `transpose_min` and `transpose_max` parameters
of particular Translator instance.
Examples of rules:
```
_) a A // "a" at the start of a word