1778880 - downloads.download rejects valid characters on filename

Status: RESOLVED DUPLICATE of bug 1778429

(WebExtensions :: General, defect)

Description

[:ytoku]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0

Steps to reproduce:

In a WebExtensions Add-on,
download a file by downloads.download() with a filename including half-width kana characters.

browser.downloads.download({
...
filename: 'path/to/ｶﾀｶﾅ.jpg',
})

Actual results:

downloads.download() rejects half-width kana characters and throws an exception:
Error: filename must not contain illegal characters

Expected results:

downloads.download() accepts the specified filename and saves the file as the specified filename.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::Downloads Panel' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[:ytoku]

Another example:
emoji + slash is also rejected.

browser.downloads.download({
...
filename: 'path/to/a😀/x.png',
})

Comment 4

[Pascal Chevrel:pascalc]

Bug 1778894 mentions that this may be a regression from 1746052. Does it work in Firefox versions lower than 101?

Comment 5

[:ytoku]

I have confirmed that it works correctly in Firefox 91.11.0esr and Firefox 101.0.1.
The problem is introduced in Firefox 102.

Comment 6

[Pascal Chevrel:pascalc]

Thanks, the regressor is most likely bug 1746052 then.