vimrc: rewrite functions in ruby

vimrc

@@ -32,7 +32,7 @@ se stl+=%r
 se stl+=%m
 "se stl+=\ %{tagbar#currenttag('←\ %s\ ','','f')}
 se stl+=\ %=
-se stl+=\ %{MabFileSize()}
+se stl+=\ %{FileSize()}
 se stl+=\ %4l:%-3c
 se stl+=\ %4L
 se stl+=\ %3p%%
@@ -168,31 +168,39 @@ en
 
 " Functions ------------------------------------------------------------------|
 
-" Strip whitespace on buffer write
-fu! <SID>StripWhite()
-   let l=line(".")
-   let c=col(".")
-   %s/\s\+$//e
-   cal cursor(l, c)
-endf
-
 " Automatic headers
-fu! <SID>FillLine(str)
-   let tw=&textwidth
-   if tw == 0 | let tw=80 | en
-   .s/\s*$//
-   let rep = ((tw - col("$")) / len(a:str)) - 2
-   if rep > 0 | .s/$/\=(' '.repeat(a:str, rep))/ | en
+fu! <SID>FillLine()
+ruby<<
+   tw  = VIM::evaluate("&tw").to_i
+   tw  = 80 if tw == 0
+   lin = $curbuf.line
+   rep = tw - lin.length - 3
+   if rep > 0
+      $curbuf.line += " " + "-" * rep + "|"
+   end
+.
 endf
 
 " File size
-fu! MabFileSize()
+fu! FileSize()
    let fs=line2byte(line('$')+1)-1
    if fs < 0 | retu "" | else | retu fs | en
 endf
 
+" Strip whitespace on buffer write
+fu! s:StripWhite()
+ruby<<
+   for ln in 1..$curbuf.length
+      rs = $curbuf[ln].rstrip
+      if $curbuf[ln] != rs
+         $curbuf[ln] = rs
+      end
+   end
+.
+endf
+
 " Close empty buffers
-fu! <SID>CloseEmptyBuffers()
+fu! s:CloseEmptyBuffers()
    let bufs = filter(range(1, bufnr('$')), 'buflisted(v:val) && empty(bufname(v:val)) && bufwinnr(v:val) < 0 && !getbufvar(v:val, "&mod")')
    if !empty(bufs)
       exe 'bd' join(bufs, ' ')
@@ -202,7 +210,7 @@ endf
 " Autocommands ---------------------------------------------------------------|
 
 " Strip whitespace
-au FileType c,cpp,cs,java,php,ruby,rust,python,go,zscript,markdown au BufWritePre <buffer> cal <SID>StripWhite()
+au FileType c,cpp,cs,java,php,ruby,rust,python,go,zscript,markdown au BufWritePre <buffer> cal s:StripWhite()
 
 " Enable rainbow braces
 au FileType c,cpp,cs,java,php,ruby,rust,python,go,zscript,html,scheme,racket,lisp au BufEnter <buffer> RainbowToggleOn
@@ -211,7 +219,7 @@ au FileType c,cpp,cs,java,php,ruby,rust,python,go,zscript,html,scheme,racket,lis
 au BufNewFile,BufRead *.s,*.inc setl sw=8 ft=asm_ca65
 
 " close empty buffers automatically
-au BufEnter * cal <SID>CloseEmptyBuffers()
+au BufEnter * cal s:CloseEmptyBuffers()
 
 " EDF → conf
 au FileType edif se syn=conf
@@ -233,7 +241,7 @@ au BufRead,BufNewFile Cargo.toml if &filetype == "" | set filetype=toml | endif
 nm ga <Plug>(EasyAlign)
 xm ga <Plug>(EasyAlign)
 
-nn <Leader>e :cal <SID>FillLine("-")<CR>A\|<ESC>
+nn <Leader>e :cal <SID>FillLine()<CR>
 
 " TagBar
 nm <F5> :TagbarToggle<CR>