On 2017/12/20 17:46, Richard Wordingham via Unicode wrote:
In an implementation that offered genuine whole word selection, and thus tackled with the challenges of Chinese, Japanese, Korean and Vietnamese (both scripts, not just CJKV) as well as Thai, I would expect the selections to be bounded by word boundaries. Thus, if the cited line break (labelled by '6') were not in the text, I would expect double-clicking on the quadrat G37:Aa13:Aa13 to select all three words.
This may be common knowledge to some, but I just had a Japanese document open in MS Word, and tried what happened on double-clicking. What it does is select same-script runs. This means that a run of kanji, a run of hiragana, or a run of katakana (interestingly, the (kata)kana length mark is treated as a forth script) is selected. This is of course not the same as words, but it can match, and it comes close in terms of offering something for editorial convenience while being easy to implement.
Regards, Martin.
