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Fix spellcheck language fallback algorithm

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Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
This commit is contained in:
Michael Telatynski 2020-04-01 16:35:53 +01:00
parent c2be98e3df
commit 9ebf217160
1 changed files with 24 additions and 9 deletions
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33
src/electron-main.js
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@ -303,24 +303,39 @@ ipcMain.on('ipcCall', async function(ev, payload) {
caseMap[lang.toLowerCase()] = lang;
});
const languages = args[0].map(lang => {
if (!caseMap["en"]) {
// default special-case for `en` as in Riot is actually implies `en-GB`. `en-US` is distinct.
// this way if `en` is requested and not available and `en-GB` is available it'll be used.
caseMap["en"] = caseMap["en-gb"];
}
const languages = new Set();
args[0].forEach(lang => {
const lcLang = lang.toLowerCase();
if (caseMap[lcLang]) {
return caseMap[lcLang];
languages.add(caseMap[lcLang]);
return;
}
// as a fallback if the language is unknown check if the language group is known, e.g en for en-AU
const langGroup = lcLang.substr(0, lcLang.indexOf("-"));
const langGroup = lcLang.split("-")[0];
if (caseMap[langGroup]) {
return caseMap[langGroup];
languages.add(caseMap[langGroup]);
return;
}
// as a further fallback, pick another variant from the same language group
return availableLanguages.find(availableLang => availableLang.startsWith(langGroup));
}).filter(Boolean);
// as a further fallback, pick all other matching variants from the same language group
// this means that if we cannot find `ar-dz` or `ar` for example, we will pick `ar-*` to
// offer a spellcheck which is least likely to wrongly red underline something.
availableLanguages.forEach(availableLang => {
if (availableLang.startsWith(langGroup)) {
languages.add(availableLang);
}
});
});
if (languages.length) {
mainWindow.webContents.session.setSpellCheckerLanguages(languages);
if (languages.size > 0) {
mainWindow.webContents.session.setSpellCheckerLanguages([...languages]);
}
break;
}