'no-break space' detection plugin for Sublime Text 2

detect_special_characters.py

# encoding: utf-8

import sublime, sublime_plugin

class DetectSpecialCharacters(sublime_plugin.EventListener):
    def on_load(self, view):
        sublime.status_message("detect_special_characters is active")
    def on_modified(self, view):
            # find no-break space
            special_characters = view.find_all(u"\u00A0")
            if len(special_characters) > 0:
                sublime.error_message("ohhh noose! detected a NO-BREAK SPACE (U+00A0)")

Updated script with inline notification.

# encoding: utf-8

import sublime
import sublime_plugin


class DetectSpecialCharacters(sublime_plugin.EventListener):

    def on_load(self, view):
        sublime.status_message("detect_nonbreaking_space is active")

    def on_modified(self, view):
        html = "<div style='color:black;background-color:#E00;padding:0px 2px'>NBSP</div>"
        view.erase_phantoms('nbsp-warn')
        # find no-break space
        for r in view.find_all(u"\u00A0"):
            view.add_phantom('nbsp-warn', r, html, sublime.LAYOUT_INLINE)