Do not insert spaces between CJK characters when joining lines

[peng1999]

Check for existing issues

• Completed

Describe the feature

In (Neo)vim there are two format options:

							*fo-M*
M	When joining lines, don't insert a space before or after a multibyte
	character.  Overrules the 'B' flag.
							*fo-B*
B	When joining lines, don't insert a space between two multibyte
	characters.  Overruled by the 'M' flag.

The B option is very convenient for CJK users because the language do not use spaces at all.

Environment

Zed: v0.162.5 (Zed)
OS: macOS 15.1.1
Memory: 16 GiB
Architecture: aarch64

If applicable, add mockups / screenshots to help present your vision of the feature

No response

[ConradIrwin]

@peng1999 we recently shipped gJ which lets you join with no space.

I am happy for Zed to pick a better default than we do today. Is M or B the better behavior for most people?

cc @0x2CA

[0x2CA]

@peng1999 we recently shipped gJ which lets you join with no space.

I am happy for Zed to pick a better default than we do today. Is M or B the better behavior for most people?

cc @0x2CA

I rarely use the join line, but in my experience there are a number of needs for joins, with space or - or _ or | or no space
But usually for complex connections I opt for macro batch processing

[peng1999]

I am happy for Zed to pick a better default than we do today. Is M or B the better behavior for most people?

In CJK context I believe B behavior is better. Because we do insert a space between ideograph and latin character.