在Vim中,能够自定义基于Syntax的折行吗?

肯定是可以，vim这么强大
问题是实现的方法

:help syn-fold

是不是这个：

" Set foldtext
function! MyFoldText()
let line=getline(v:foldstart)
let nucolwidth=&foldcolumn+&number*&numberwidth
let windowwidth=winwidth(0)-nucolwidth-3
let foldedlinecount=v:foldend-v:foldstart+1
let onetab=strpart(' ', 0, &tabstop)
let line=substitute(line, '\t', onetab, 'g')
let line=strpart(line, 0, windowwidth-2-len(foldedlinecount))
let fillcharcount=windowwidth-len(line)-len(foldedlinecount)
return line.'…'.repeat(" ",fillcharcount).foldedlinecount.'…'.' '
endfunction
set foldtext=MyFoldText()