126414 - Class names starting with digits not parsed correctly

Status: VERIFIED INVALID

(Core :: CSS Parsing and Computation, defect)

Description

[Christopher Aillon (sabbatical, not receiving bugmail)]

* In CSS1, a class name could start with a digit (".55ft"), unless it was a
dimension (".55in"). In CSS2, such classes are parsed as unknown dimensions (to
allow for future additions of new units). To make ".55ft" a valid class, CSS2
requires the first digit to be escaped (".\55ft")

We correctly do not parse .1st { } but we incorrectly don't parse .\2nd { }

Testcase coming up.

Comment 1

[Christopher Aillon (sabbatical, not receiving bugmail)]

Attachment: Testcase

Comment 2

[Richard Brodie]

You can't backslash escape digits. Works if you use \32.

Comment 3

[Daniel Glazman (:glazou) (not active in Mozilla any more)]

bug is invalid, the backslash should be followed by the iso10646 code of "2",
not by "2" itself.

Comment 4

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

Right, there's an incorrect example in the CSS spec.  See
http://www.w3.org/Style/css2-updates/REC-CSS2-19980512-errata.html#x49

Comment 5

[Hixie (not reading bugmail)]

v (this error in the spec is infamous for continously being propagated even
after rereleases of the spec...)