The HTML Tidy plugin for Sublime is amazing when people like to code with no line breaks.. but by default breaks django tags by converting spaces in django statements to %20.
I found HTMLTidy has a suspicious option called "fix-uri". Disable that in your sublime package preferences (you’ll have to add the key/value yourself) and voila everything is clean!
Ultimately, I use HTML Tidy to indent, not modify my code.
"fix-uri": false
Yuji Tomita 