[Webkit-unassigned] [Bug 138185] Web Inspector: I do not expect to see the same rule multiple times in styles sidebar

Mon Dec 1 17:09:39 PST 2014

https://bugs.webkit.org/show_bug.cgi?id=138185

--- Comment #6 from Joseph Pecoraro <joepeck at webkit.org> ---
I think the deduplication really helps simplify the sidebar.

One case I hadn't thought of that this helps is inherited styles. Take this test:

    <html>
    <head>
    <style>
    /* simplified reset.css */
    html, body, div, p { margin:0; padding:0; border:0; font-style: inherit; }
    body { line-height:1.5; }
    /* page styles */
    p { margin: 0 0 1.5em; }
    </style>
    </head>
    <body><div><p>Test</p></div></body>
    </html>

Inspecting the <p> you will see the first reset rule 4 times total because of the "font-style: inherit" for the p, div, body, html. With de-duplication you only see it once, up above with high specificity and never in the inherited section. If there was in fact a font style it inherits, that would be listed in the inherited section, seriously reducing clutter.

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