Remove rego syntax, fixes #486

autoload/csv.vim

@@ -762,6 +762,10 @@ fu! csv#CalculateColumnWidth(row, silent) "{{{3
     " does not work with fixed width columns
     " row for the row for which to calculate the width
     let b:col_width=[]
+    if has( 'vartabs' ) && b:delimiter == "\t"
+        let vts_save=&vts
+        set vts=
+    endif
     try
         if exists("b:csv_headerline")
           if line('.') < b:csv_headerline
@@ -780,6 +784,9 @@ fu! csv#CalculateColumnWidth(row, silent) "{{{3
     " delete buffer content in variable b:csv_list,
     " this was only necessary for calculating the max width
     unlet! b:csv_list s:columnize_count s:decimal_column
+    if has( 'vartabs' ) && b:delimiter == "\t"
+        let &vts=vts_save
+    endif
 endfu
 fu! csv#Columnize(field) "{{{3
     " Internal function, not called from external,