if you think its bug, file a bug

• http://bugzilla.mozilla.org/

There should never be backslashes in the URL as Firefox treats those as part of the file name (%5C) and not as path separators and invalid characters get converted to underline characters.

Thanks very much for the explanation. Sorry, I know I'm going to sound stubborn, but I need to ask... Since backslashes are a standardized and long-standing delimiter for designating a file path, why doesn't Firefox treat them that way, rather than deciding it's part of the filename? The Web server handles the syntax fine, the problem only seems to be on the browser side... And so far I've only encountered it with Firefox. Not with IE.

IE and probably Google Chrome as well tend to be more forgiving with such coding errors, but Firefox is usually more strict and doesn't allow this. A valid path should consist of names separated by slashes and not by backslashes.

Sorry, cant find a thread that fits,

Prob. is:  Download filenames are Cut Short - ie: Filenam~rt.mov  .  This is recent 12/13,  and extremely irritating, looking to downgrade FF

Hi Nighthawk.rl, you're right, that doesn't fit here. Please start a new question with your system details. You can start a new question at the following link. Scroll down past the suggestions to continue with the form (I think it has 3 different screens). https://support.mozilla.org/en-US/questions/new/desktop/fix-problems

Also, if this is a file saved by a video downloader, check for updates and check for support news on the add-on. Due to the changes related to downloads in Firefox 26, many add-ons have been updated in the past few weeks.

Hi edactic, in the days before Firefox, many sites used backslashes because the developers were Windows people and IE was dominant. So... about ten years ago, someone created an extension to work around it: https://addons.mozilla.org/en-US/firefox/addon/slashy/

You can look at this version of Slashy that I've modified to work in more cases.

• http://www.freefilehosting.net/slashy-200-fxsm

You can download this Firefox extension file by clicking the "Download This File" button without having to register and sign on to this website.