Rails spinoffs - Oct 2007 - problem with $$ function dot in id name makes it fail

#comment-1.01 span.votes

a . in the id name gives it problems
according to the specs there is nothing wrong with having a dot in id
or class names

im using 1.5, has this been fixed recently?


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Thierry schrieb:
> #comment-1.01 span.votes
> 
> a . in the id name gives it problems
> according to the specs there is nothing wrong with having a dot in id
> or class names
> 
> im using 1.5, has this been fixed recently?
This could be difficult to fix. Are you really sure, that this is valid?

Just check out this:

<div id="class.name" />

<div id="class" class="name" />

Strange ...

Greetings

Frederic


-- 
Frederic Gaus                                 pgp-key: 93E6903C
fingerprint: 0C55 4517 CC1E 5F7F 9059  3535 AB54 D8E8 93E6 903C

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Hi,

No, this hasn''t been fixed yet, but there''s an open ticket for
it:
http://dev.rubyonrails.org/ticket/9739

Regards,

Tobie


On Oct 9, 1:56 pm, Thierry
<thierryschellenb...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> #comment-1.01 span.votes
>
> a . in the id name gives it problems
> according to the specs there is nothing wrong with having a dot in id
> or class names
>
> im using 1.5, has this been fixed recently?

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Hi,
the spec says:

In CSS2, identifiers  (including element names, classes, and IDs in selectors)
can contain only the characters [A-Za-z0-9] and ISO 10646 characters 161 and
higher, plus the hyphen (-); they cannot start with a hyphen or a digit. They
can also contain escaped characters and any ISO 10646 character as a numeric
code (see next item). For instance, the identifier "B&W?" may be
written as "B\&W\?" or "B\26 W\3F".


http://www.w3.org/TR/REC-CSS2/syndata.html#value-def-identifier

so this should be the base. Interestingly enough, an underscore is commonly
used, but not covered by the css spec.

The underscore comes into the game by html spec:

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by
any number of letters, digits ([0-9]), hyphens ("-"), underscores
("_"), colons (":"), and periods (".").
http://www.w3.org/TR/REC-html40/types.html#type-name


So the issue arises from the css spec (which covers the css selectors) being
more restrictive than the html spec, which allows periods for ids (class is
cdata, meaning almost everything is allowed)


So I guess the question is: which relvante Implementations in Browsers allow
which characters in ID and CLASS attributes

.:Fabian

PS: I guess the period is handled differently because it acts as keytoken for
classnames, similar to the hash which is the keytoken for ids

-----Original Message-----
From:
grbounce-_Pkz0AUAAAB9-VKt0-RY8LHUELm10l3Y=fabian.lange=web.de@googlegroups.com
[mailto:grbounce-_Pkz0AUAAAB9-VKt0-RY8LHUELm10l3Y=fabian.lange=web.de-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org]
On Behalf Of Thierry
Sent: Dienstag, 9. Oktober 2007 13:56
To: Ruby on Rails: Spinoffs
Subject: [Rails-spinoffs] problem with $$ function dot in id name makes it fail


#comment-1.01 span.votes

a . in the id name gives it problems
according to the specs there is nothing wrong with having a dot in id
or class names

im using 1.5, has this been fixed recently?



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Help on Open-SSl implementation with Apache + windows.
http://rails-ssl.blogspot.com/


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I think using such tokens such as a period or hash symbol in the
selector is a wretched idea.

Can you think of a regex to parse out the distinct class names from
the period delimited names.  First thought was sure, anything that
isn''t preceded by a space, but what about this notation,
"div.ATeam"
I am referencing a div that has the class name ATeam, so now we have
to create a whitelist of HTML elements that wouldn''t be considered in
the selector "div.A.Team"  Oh but wait now we have tripped on our
feet, now we have what could be considered in our white list but it is
now a piece of the period delimited class name, the headache ensues
when class names further collide with HTML elements
"address.address".

Underscore for the win.

Cheers,
       Matt



On Oct 9, 11:08 am, "raghubetter"
<raghubet...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Help on Open-SSl implementation with Apache +
windows.http://rails-ssl.blogspot.com/

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problem with $$ function dot in id name makes it fail
that pretty much sums it up


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I see the problem, think it would be best for me to change the dot
into something else :)


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On 10/9/07, Thierry
<thierryschellenbach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> I see the problem, think it would be best for me to change the dot
> into something else :)
>
You can always use an explicit id attribute:
$$(''*[id="id.with.periods"]'');

Entering ids like "#id.with.periods" in the CSS SelectORacle also
produces unexpected results
http://penguin.theopalgroup.com/cgi-bin/css3explainer/selectoracle.py.
 I''m not sure if you can do it in CSS.  Maybe there is an escape
character or a quoting method?

- Ken Snyder

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In CSS "." and ":" should be escaped using back-slashes like
so:

#person\.name.employee { /* css rules */ } // id: #person.name, class:
employee

a.links\:external:hover { /* css rules */ } /( tag: a, class:
links:external, pseudo-class: hover

The readability''s close to null IMHO, hence the very low adoption
rate.

I''ve never ever used either characters in a class or id name myself
but I understand who they could be useful for namespacing purposes.

I don''t know what the rest of the core team thinks about it.
I''m
personally not hostile to supporting it as long as it doesn''t wreck
the performance of $$ and other Selector-related methods.

Regards,

Tobie



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On 10/10/2007, Tobie Langel
<tobie.langel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> In CSS "." and ":" should be escaped using back-slashes
like so:
>
> #person\.name.employee { /* css rules */ } // id: #person.name, class:
> employee
>
> a.links\:external:hover { /* css rules */ } /( tag: a, class:
> links:external, pseudo-class: hover
>
> The readability''s close to null IMHO, hence the very low adoption
> rate.
>
> I''ve never ever used either characters in a class or id name
myself
> but I understand who they could be useful for namespacing purposes.
>
> I don''t know what the rest of the core team thinks about it.
I''m
> personally not hostile to supporting it as long as it doesn''t
wreck
> the performance of $$ and other Selector-related methods.
>
> Regards,
>
> Tobie
If prototype supports the correct way of working, then what will need
to be broken to support an incorrect way of working?

If there is no escaping supplied, you would be guessing when to escape it.

You could use $$(''element[id=id.with.dots]'')



-- 
-----
Richard Quadling
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
"Standing on the shoulders of some very clever giants!"

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Please shoot me. Turn on moderation for this list or something, this
aint javascript/html/css beginners.


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posted under the wrong thread ...

i don''t understand why the CSS and HTML spec consider escaped dots a
valid content for html ID''s.
i''d rather say its a problem of HTML spec not supporting custom
attributes for tags, which leads to Ajax developers having to load up
the code with "_" delimited id tags for Data References if they want
their pages to validate.

--

On 11 Okt., 09:47, Markus Hammer
<yaya...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Please shoot me. Turn on moderation for this list or something, this
> aint javascript/html/css beginners.

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