highlight MyWordUnderCursorHighlight cterm=bold

autocmd CursorMoved * call MyHighlightWordUnderCursor()
autocmd CursorMovedI * call MyHighlightWordUnderCursor()

function! MyHighlightWordUnderCursor()
python << endpython
import vim

# get the character under the cursor
row, col = vim.current.window.cursor
characterUnderCursor = ''
try:
    characterUnderCursor = vim.current.buffer[row-1][col]
except:
    pass

# remove last highlight
vim.command("match MyWordUnderCursorHighlight //")

# if the cursor is currently located on a real word, move on and highlight it.
# we don't want to highlight stars and slashes or other wild things. Just words.
if characterUnderCursor.isalpha() or characterUnderCursor.isdigit() or characterUnderCursor is '_':

    # expand cword (vim special key) to get the word under the cursor
    wordUnderCursor = vim.eval("expand(\'<cword>\')")
    if wordUnderCursor is None :
        wordUnderCursor = ""
    else :
        wordUnderCursor = "\<" + wordUnderCursor + "\>"
    
    currentSearch = vim.eval("@/")
    if currentSearch != wordUnderCursor :
        # highlight it, if it is not already the currently searched word
        vim.command("match MyWordUnderCursorHighlight /\<" + wordUnderCursor + "\>/")

endpython
endfunction