This is interesting, How come IE (version 9) still doesn't support proper file://
urls for local pac script?
file:///C:/my.pac
doesn't work.file://C:/my.pac
works.
This is even more interesting because, back in 2006, someone (very likely from inside Microsoft) has already(!) clarifed the correct usage of file://
on the official IEBlog, and here. Another good reference is from our beloved Wikipedia.
Dear MS, please fix this, so that I can use consistent pac script urls across browsers, and stop slapping your own face. Thank you!