Use mvim on macos (fixes #83)

autoload/latex.vim

@@ -113,6 +113,7 @@ function! s:init_environment() " {{{1
   "
   call latex#util#set_default('g:latex#data', [])
   call latex#util#set_default('b:latex', {})
+  call latex#util#set_vim_executable()
 
   "
   " Set some file type specific vim options

autoload/latex/latexmk.vim

@@ -324,8 +324,9 @@ function! s:latexmk_set_cmd(data) " {{{1
   if g:latex_latexmk_continuous
     let cmd .= ' -pvc'
     if g:latex_latexmk_callback && has('clientserver')
-      let callback = 'vim --servername ' . v:servername
-            \ . ' --remote-expr \"latex\#latexmk\#errors(0)\"'
+      let callback  = g:latex_vim_executable
+      let callback .= ' --servername ' . v:servername
+      let callback .= ' --remote-expr \"latex\#latexmk\#errors(0)\"'
       if has('win32')
         let cmd .= ' -e "$success_cmd .= ''' . callback . '''"'
               \ .  ' -e "$failure_cmd .= ''' . callback . '''"'

autoload/latex/util.vim

@@ -341,6 +341,16 @@ function! latex#util#set_default(variable, default) " {{{1
   endif
 endfunction
 
+function! latex#util#set_vim_executable() " {{{1
+  if exists('g:latex_vim_executable') | return | endif
+
+  if exists('mac')
+    let g:latex_vim_executable = 'mvim'
+  else
+    let g:latex_vim_executable = 'vim'
+  endif
+endfunction
+
 function! latex#util#tex2tree(str) " {{{1
   let tree = []
   let i1 = 0