Remove <ruby> furigana before generating readings

[ahlec]

Before we run the current field through mecab.reading to attach furigana, line 60 correctly removes the bracket notation furigana already in the input string. This prevents clicking the button multiple times from compounding the readings. However, <ruby> markup is not removed before sending for generation, which compounds additional readings:

To fix this, I extracted the code from the "delete furigana" button into a reusable utility function removeFurigana. We then use this to remove readings before sending the text through generation.

In doing this, I fixed a couple of bugs with the furigana deletion logic:

• Decoupled from current config. Every string is run through both <ruby> removal and bracket notation removal. Use cases:
  • User has changed their config setting and would like to generate in the new style
  • User used another plugin to generate the original content (in bracket notation) and wants to use this tool to replace it with new style (<ruby>)
• Removes reliance on <rp> tag. The original implementation required a format of <ruby>日本語<rp>... in order to work. If you didn't include the <rp> tag (which is optional in the HTML specification), it would throw errors. It worked in the general flow because this tool always included the <rp> tag. I've reimplemented this to decouple from a particular structure and to just remove <rp> and <rt> tags to arrive at the body instead.

I've added some unit tests to test these behaviors.

I've tested this in both 2.1.54 (M1 Silicon) and 2.1.49 (Mac Intel) and it loads and works as expected.

[obynio]

A very nice work as always. I never paid attention to this behaviour, thank you for the fix and the unit tests. The code is much cleaner this way ! I will merge this and release a 1.3.2 update.