Change text edit implementation to support \r (prabirshrestha#718)

* Change text edit implementation to support \r

* Fix edit on unloaded buffer

* Add \r\n tests

* Fix for perf

Co-authored-by: mattn <[email protected]>

Author: hrsh7th

autoload/lsp/utils.vim

@@ -319,3 +319,8 @@ function! lsp#utils#make_valid_word(str) abort
    endif
    return l:str
 endfunction
+
+function! lsp#utils#_split_by_eol(text) abort
+    return split(a:text, '\r\n\|\r\|\n', v:true)
+endfunction
+

autoload/lsp/utils/buffer.vim

@@ -26,6 +26,10 @@ function! s:get_fixendofline(buf) abort
     endif
 endfunction
 
+function! lsp#utils#buffer#_get_fixendofline(bufnr) abort
+    return s:get_fixendofline(a:bufnr)
+endfunction
+
 function! lsp#utils#buffer#_get_lines(buf) abort
     let l:lines = getbufline(a:buf, 1, '$')
     if s:get_fixendofline(a:buf)