On 2022-07-26 Tue. 09:23 +0700£¬Max Nikulin wrote£º

> However the suggestion was namely to use U+200B ZERO WIDTH SPACE and
> it
> is actually implemented since `org-emphasis-regexp-components'
> currently
> contains [:space:].
> ...
> K, could you, please, clarify what is your particular use case?

My bad, I misunderstood the "feature" mentioned in the old post.

My use case is to emphasize chinese characters without spaces being inserted, even those zero-width spaces. For example "ÖÐÎÄ*²â*ÊÔ" should be enough to emphasize "²â".

I am using zero-width spaces right now, and it works fine in org-mode buffers, but if exported to latex-pdf files, the U+200B ZERO WIDTH SPACE character will not be zero-width for certain fonts. So I hope not to use that character.

On Tue, 26 Jul 2022 09:26:42 +0800, Ihor Radchenko wrote:
> Another idea we have discussed is using something similar to Markdown
> format: **bold**, //italics//, __underline__, etc. It is less verbose
> compared to the special blocks, which should be valuable for
> Japanese/Chinese/other languages with no spaces between words.

By the way, it seems that my use case has already been implemented by markdown-mode. In a markdown-mode buffer "ÖÐÎÄ**²â**ÊÔ" will certainly make "²â" bold.