Rubytechniques

These are rough notes on how to use ruby markup and styling to replicate the ruby-related requirements of the Ruby and Emphasis section of the document Requirements for Japanese Text Layout.

There are three main types of ruby:

• mono ruby (character-by-character annotation)
• group ruby (a single ruby text annotation spanning more than one base character; you cannot break a line in the middle)
• jukugo ruby (ruby text for a compound noun in Japanese where ruby text is normally character-by-character, as for mono-ruby, but when there are more than two ruby characters per base character, the ruby text for one base character can spill over an adjacent base character, if space is available; you can also break a line in the middle of jukugo-ruby)

To mark up mono-ruby

Use simple ruby markup, eg.

日に本ほん語ご

Mono-ruby, single kanji K1 kakb k1 K2 kckd k2k3 K3 ke k4k5

Mono-ruby, compound word, simple markup K1 ka K2 kbkc k1 K3 kdke K4 kfkg k2 K5 khkikj K6 kl k3k4

Mono-ruby, compound word, complex markup K1 K2 ka kbkc k1 K3 K4 kdke kfkg k2 K5 K6 khkikj kl k3k4

Jukugo-ruby K1 K2 ka kbkc k1 K3 K4 kdke kfkg k2 K5 K6 khkikj kl k3k4

My test cases

回団困固国囲区医石田向

Mono ruby

Mono-ruby, simple ruby markup

回団困固

回 あ 団 い 困 う 固 え

回 ああ 団 あい 困 あう 固 あえ

回 あああ 団 ああい 困 ああう 固 ああえ

回 ああああ 団 あああい 困 あああう 固 あああえ

回 あ 石田 団 い 石田 困 う 石田 固 え

回 ああ 石田 団 あい 石田 困 あう 石田 固 あえ

回 あああ 石田 団 ああい 石田 困 ああう 石田 固 ああえ

回ああああ石田 団 あああい 石田 困 あああう 石田 固 あああえ