auto_switch_tab_size.py

import sublime, sublime_plugin
import os
 
class AutoSwitchViewTabSizeCommand(sublime_plugin.EventListener):
    """ Auto switch tab_size with syntax"""

    # def on_activated(self, view):
    def on_load(self, view):
        syntax = view.settings().get('syntax')

        if syntax.find("Ruby") > 0 or syntax.find("JavaScript") > 0:
            view.settings().set("tab_size", 2)
        elif syntax.find("Python") > 0:
            view.settings().set("tab_size", 6)