“Grey if it’s in England, gray if it’s in America.”
Same as tire vs tyre, center vs centre and so on.
JohnEdwa
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Cake day: June 12th, 2023
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One notable difference between X11 and W3C is the case of “Gray” and its variants. In HTML, “Gray” is specifically reserved for the 128 triplet (50% gray). However, in X11, “gray” was assigned to the 190 triplet (74.5%), which is close to W3C “Silver” at 192 (75.3%), and had “Light Gray” at 211 (83%) and “Dark Gray” at 169 (66%) counterparts. As a result, the combined CSS 3.0 color list that prevails on the web today produces “Dark Gray” as a significantly lighter tone than plain “Gray”, because “Dark Gray” was descended from X11 – for it did not exist in HTML nor CSS level 1 – while “Gray” was descended from HTML. Even in the current draft for CSS 4.0, dark gray continues to be a lighter shade than gray. Some browsers such as Netscape Navigator insisted on an “a” in any “Gray” except for “Light Grey”.
25·28 days agoBut they will work, and according to the spec, you have to build your system so that it can handle those cases. Obsolete doesn’t mean incorrect or invalid, just a “you shouldn’t do this any more”.
Obsolete Syntax
Earlier versions of this standard allowed for different (usually more liberal) syntax than is allowed in this version. Also, there have been syntactic elements used in messages on the Internet whose interpretation have never been documented. Though some of these syntactic forms MUST NOT be generated according to the grammar in section 3, they MUST be accepted and parsed by a conformant receiver.
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