1. Open Web Inspector, Elements pane 2. Double click any attribute. The edit field will appear, and the value of the attribute will be selected. 3. Move cursor to the left and delete first " character (opening apostrophe) 4. Press Return to cofirm the change. The attribute will now have an additional apostrophe at the end. Example: 1. Go to http://webkit.org/quality/bugwriting.html 2. Edit attribute id="title" 3. After aforementioned change, the attribute will read id="title"" Comments: This behavior will occur infinite number of times – deleting first apostrophe always appends additional apostrophe at the end.
This is the expected behavior, as the parser attempts to quote unquoted values, so that width=90% will be mapped to width="90%"