Katakana to hiragana conversion options (#1965)

* Refactor convertKatakanaToHiragana

* Add keepProlongedSoundMarks option

* Test keepProlongedSoundMarks option

* Refactor

* Add keepProlongedSoundMarks option to hiragana handlebars helper

* Update documentation

1 files changed, 6 insertions, 3 deletions

diff --git a/ext/js/templates/sandbox/anki-template-renderer.js b/ext/js/templates/sandbox/anki-template-renderer.js
index b721fadc..ae89aade 100644
--- a/ext/js/templates/sandbox/anki-template-renderer.js
+++ b/ext/js/templates/sandbox/anki-template-renderer.js
@@ -607,13 +607,16 @@ class AnkiTemplateRenderer {
 
     _hiragana(context, ...args) {
         const ii = args.length - 1;
-        const value = (ii > 0 ? args[0] : args[ii].fn(context));
-        return this._japaneseUtil.convertKatakanaToHiragana(value);
+        const options = args[ii];
+        const {keepProlongedSoundMarks} = options.hash;
+        const value = (ii > 0 ? args[0] : options.fn(context));
+        return this._japaneseUtil.convertKatakanaToHiragana(value, keepProlongedSoundMarks === true);
     }
 
     _katakana(context, ...args) {
         const ii = args.length - 1;
-        const value = (ii > 0 ? args[0] : args[ii].fn(context));
+        const options = args[ii];
+        const value = (ii > 0 ? args[0] : options.fn(context));
         return this._japaneseUtil.convertHiraganaToKatakana(value);
     }
 }