perseids-tools / beta-code-json

JSON Mapping from Greek beta code to Greek characters and vice versa

Beta Code JSON

Map of Greek Beta Code characters to Unicode and from Unicode to Beta Code.

Standard

The mappings in this repository aim mostly to conform to the TLG standard specified here.

Not every application that uses Greek Beta Code follows the TLG standard exactly. The mappings try to capture these nonstandard uses without breaking Beta Code encoded according to the standard in the following ways:

• Lowercase Latin letters can be used in the Beta Code (e.g. a, w=)
• Uppercase Greek letters can be keyed 1. asterisk, 2. breathing, 3. accent, 4. iota subscript, 5. letter (e.g. *(=|W)
• Uppercase Greek letters can be keyed 1. asterisk, 2. letter, 3. breathing, 4. accent, 5. iota subscript (e.g. *W(=|)

Example uses

• https://github.com/perseids-tools/beta-code-js
• https://github.com/perseids-tools/beta-code-rb
• https://github.com/perseids-tools/beta-code-py

beta-code-json's Issues

Order of diaeresis + accent

When converting a Greek letter with both a diaeresis and an accent to Betacode, the accent is always put first, e.g.:

>>> print(beta_code.greek_to_beta_code('προΐστημι'))
proi/+sthmi

I'm not sure if this follows a beta code standard that I'm unaware of, but it is neither consistent with how Perseus uses Betacode (where it would get represented as proi+/sthmi) nor with the order of the characters in decomposed Unicode. Crucially, when using the 'Perseus order' and converting such a Beta Code string back to Unicode, I get the wrong result:

>>> print(beta_code.beta_code_to_greek('proi+/sthmi'))
προϊ ́στημι

Missing Mappings

I am using beta-code-js on https://github.com/byztxt/byzantine-majority-text but a number of mappings appear to be missing. For example, ")E" is mapping to "ʼε" right now (which is not a diacritic) because the mappings only have "*)E". It also doesn't appear to have any mappings for "^" (which, I believe, should be a circumflex: http://www.tlg.uci.edu/encoding/quickbeta.pdf).

Do you have any interest in supporting these mappings?