[whatwg] Fakepath revisited
ian at hixie.ch
Sun Sep 13 14:50:55 PDT 2009
On Thu, 3 Sep 2009, Alex Henrie wrote:
> I would like to revisit HTML5 section 18.104.22.168, as circumstances have
> changed since it was last discussed. For those of you not familiar with
> the issue, section 22.214.171.124 defines the value property of <input
> type="file"/> elements. This behavior is not currently consistent across
> all browsers. For example, if I were uploading a file called
> "upload.txt" into input element "foo", foo.value would be...
> In Firefox 3: "upload.txt"
> In Safari 4: "upload.txt"
> In Chrome 2: "upload.txt"
> In Internet Explorer 8: "C:\fakepath\upload.txt"
> In Opera 10: "C:\fakepath\upload.txt"
I'm no fan of this feature -- I think it's quite silly -- but at the end
of the day I'd rather have all the browsers do the same silly thing than
have some do one thing and others do another. At least when they all do
the same thing, we can be sure that sites will work the same everywhere;
when they do things differently, who knows what will break.
Right now we're in a position where half the major rendering engines do it
one way, and the other half do it another way. So we can't pick a side
based on the most common behaviour.
If Opera or IE decided to not do this, then it would be clear: we'd not
have the path. However, both have said they don't want to change this.
If WebKit or Firefox were to add this, then it would be clear: we'd have
the fake path. However, the WebKit team is split, the Firefox team has
indicated a preference against, and so far the status quo has prevailed in
So we have to look at the pros and cons and make a decision based on what
the merits of each case are.
There are basically only two arguments:
Aesthetics: Having the fake path is ugly and poor language design.
Compatibility: Having it increases compatibility with deployed content.
In HTML5's development, compatibility is a stronger argument than
aesthetics. Therefore the path stays.
> A better solution exists: drop the fakepath requirement. Browsers that
> desire extra compatibility can add fakepath to their compatibility modes
> as they choose.
This misses the point. HTML5 is intended to describe what browsers do in
all modes, not what browsers do when in a special mode called "HTML5
compliance". There is never the option of saying that browsers can violate
the spec; that would defeat the whole point of having a spec.
> The bottom line is that no web developer wants to have a confusing,
> unintuitive, and very permanent standard. Please remove this requirement
> from HTML5 before it becomes a standard. Don't punish all web developers
> for the poor past designs of the few.
Convince IE or Opera that they shouldn't do this, and the spec will
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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