[Issue 15470] New: Unnecessary markup in ddoc's html generation

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15470

          Issue ID: 15470
           Summary: Unnecessary markup in ddoc's html generation
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dlang.org
          Assignee: nobody at puremagic.com
          Reporter: csmith.ku2013 at gmail.com

This issue expands on Issue #14473,
https://issues.dlang.org/show_bug.cgi?id=14473.

I've gone through and highlighted some issues with the generated markup.

Example source:

* view-source:http://dlang.org/spec/property.html

I went ahead and ran this page through an HTML
validator(https://validator.w3.org/nu/?doc=http%3A%2F%2Fdlang.org%2Fspec%2Fproperty.html),
and here's a brief summary:

* links need to be striped for anchor tags.
* center is obsolete, use CSS
* nesting code in an order list generates invalid html

Additional notes that pass the validator:

* Usage of the <b> tag instead of <strong>. This breaks the semantic layer html
is supposed to provide. See
http://www.w3.org/International/questions/qa-b-and-i-tags.
* Loading a stylesheet in the body, all stylesheets using rel should be in the
head.
http://www.w3.org/html/wg/drafts/html/master/single-page.html#the-link-element:attr-link-rel-4
* Unnecessary span tags. Example: `<td><span class="d_inlinecode donthyphenate
notranslate">float.nan</span></td>` could be reduced to `<td
class="d_inlinecode donthyphenate notranslate">float.nan</td>`
* Tons of unnecessary whitespace, and at the same time, insufficient whitespace
for this to be readily editable after html generation.

Overall, all of these things can account for slower page loads, which can
impact page ranking in search engines.

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