I saw that nice TextMate functionality that shows a little arrow on tabulation and that ¬
symbol that is usefull to trace unnecessary whitespaces.
I have gmate plugins, but this functionality doesnt seems to be there.
Thanks in advance
Gedit ships with a plugin called "Draw Spaces" which will show characters for all whitespaces including tabs, spaces and line feeds. Simply enable it in Edit
> Preferences
> Plugins
> Draw Spaces
.