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[Bug] border transparent

From: (wrong string) äper <christoph.paeper@tu-clausthal.de>
Date: Tue, 2 Jul 2002 21:25:34 -0400 (EDT)
Message-ID: <073f01c22230$86312ee0$3ef4ae8b@heim4.tuclausthal.de>
To: <www-validator-css@w3.org>




Moin!

When using the shorthand property 'border' with 'transparent' as the color
value, the validator reports an error like this:

| Invalid number : border Too many values or values are not recognized :
| 1px solid transparent

This would be the correct behaviour for the unaltered CSS Level 2
specification, which says in chapter 8.5.2 [1]:

| 'border-color'
| Value: <color>{1,4} | transparent | inherit
|
| 'border'
| Value: [ <'border-width'> || <'border-style'> || <color> ] | inherit
|
| 'border-top-color', 'border-right-color', 'border-bottom-color',
| 'border-left-color'
| Value: <color> | inherit

*but* is corrected by the Errata [2]:

| Section 8.5.2 Border color: 'border-top-color', 'border-right-color',
| 'border-bottom-color', 'border-left-color', and 'border-color'
|
| [2001-06-25] The value 'transparent' is also allowed on
'border-top-color',
| 'border-right-color', etc. Change the line "Value: <color> | inherit" to
|
| Value: <color> | transparent | inherit

and a few lines later

| [2001-06-25] The value 'transparent' is also allowed on 'border-top',
| 'border-bottom', 'border-right', 'border-left', and 'border'.
|
| Change the two lines "Value: [ <'border-top-width'> || <'border-style'> ||
| <color> | inherit" to
|
| Value: [ <border-top-width> || <border-style> || [<color> | transparent] |
| inherit

furthermore

| The individual border-X-color property definitions may also take the
| value 'transparent'.
| The 'border-color' shorthand property should read:
|
| [ <color> | transparent ]{1,4} | inherit

Thus 'transparent' is valid for any possibility to declare some border
color.

As the Errata are AFAIK normative, I consider the aforementioned error
message a bug.

In fact, there's only exactly one possibility to get no validator error in
combination with transparent borders (also see my test CSS [3]):

| border-color: transparent;

________________________________________________________________________
[1] <http://www.w3.org/TR/CSS2/box.html#border-color-properties>
[2] <http://www.w3.org/Style/css2-updates/REC-CSS2-19980512-errata.html>
[3] <http://www.tu-clausthal.de/~ktcwcp/temp/transparent-border.css>

Christoph Päper
Received on Thursday, 11 July 2002 18:10:16 GMT

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