286596 - forced download on text/plain

Status: RESOLVED INVALID

(Toolkit :: Downloads API, defect)

Description

[Alan Plum]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050225 Firefox/1.0.1 StumbleUpon/1.9993
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050225 Firefox/1.0.1 StumbleUpon/1.9993

After setting up a file extension to be mapped to a foreign MIME type and
setting it back to text/plain, Firefox still tries to force download.

Reproducible: Always

Steps to Reproduce:
1. Set up your server to map the filename extension ".foo" to be mapped to the
MIME type "text/x-foo"
2. Open a file with that filename extension from your server via Firefox
3. In the Download prompt select system default
4. In Windows' "Open With" prompt select Notepad/Editor
5. In "Windows Explorer" remove the filetype/application binding
6. Set up your server to map the extension ".foo" to "text/plain"
7. Open the file again
8. Reboot and repeat
Actual Results:  
Firefox prompts me with a download prompt for the file now mapped to
"text/plain", calling it an unknown format "FOO-File".

Expected Results:  
Firefox should treat the file by its MIME type and display it as plain text in
the browser window.

The behaviour does not occur in MSIE 6, which displays the "text/plain" file as
expected.

Comment 1

[Alan Plum]

Clearing cache, history and download manager history fixed the bug. Nevermind that.