Line breaking configuration support

[moshg]

In Japanese, words aren't separated by spaces. Sentences too. So it is not what I want that when single line break occurs, it is replaced by a space. I want line break erased.
Can mdBook provide the command line argument that enable this feature, or detect locale and enable this feature?

[mrec]

Relevant discussion: https://talk.commonmark.org/t/soft-line-breaks-should-not-introduce-spaces/285

[moshg]

@mrec Thanks for the good link!
ignore_line_breaks and east_asian_line_breaks, which pandoc already has, seem good, though the name "east_asian_line_breaks" might be inappropriate because there might be other languages that don't use spaces to separate words.

[moshg]

And east_asian_line_breaks by default and always_soft_break_as_space opt-in might be better.