At some point in the past, unicode symbols such as Japanese kana became supported in Stack Exchange question URLs.
However, in comments and posts, when pasting a link using these symbols, they are truncated. For example, the following URL:
... is the correct URL for the question with ID 2102. However, the following code does not create a link:
... and, if you just paste the link itself without the
() Markdown, you get this (hover over it to see the actual link URL):
What is the こと in sentences such as あなたのことが好きだ?h-as-あなたのことが好きだ
... which produces the following (in case this post fixes itself):
Can we get link parsing support for these unicode characters in Markdown
() and auto-linking syntax?