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HTML is very lenient when it comes to closing elements, so Angular's parser has rules that specify which elements are implicitly closed when closing a tag. The parser keeps track of the nesting of tag names using a stack and parsing a closing tag will pop as many elements off the stack as possible, provided that the elements can be implicitly closed. For example, consider the following templates: - `<div><br></div>`, the `<br>` is implicitly closed when parsing `</div>`, because `<br>` is a void element. - `<div><p></div>`, the `<p>` is implicitly closed when parsing `</div>`, as `<p>` is allowed to be closed by the closing of its parent element. - `<ul><li>A <li>B</ul>`, the first `<li>` is implicitly closed when parsing the second `<li>`, whereas the second `<li>` would be implicitly closed when parsing the `</ul>`. In all the cases above the parsed structure would be correct, however the source span of the closing `</div>` would incorrectly be assigned to the element that is implicitly closed. The problem was that closing an element would associate the source span with the element at the top of the stack, however this may not be the element that is actually being closed if some elements would be implicitly closed. This commit fixes the issue by assigning the end source span with the element on the stack that is actually being closed. Any implicitly closed elements that are popped off the stack will not be assigned an end source span, as the implicit closing implies that no ending element is present. Note that there is a difference between self-closed elements such as `<input/>` and implicitly closed elements such as `<input>`. The former does have an end source span (identical to its start source span) whereas the latter does not. Fixes #36118 Resolves FW-2004 PR Close #38126 |
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Angular
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages.
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