Uses for the '"' entity in HTML
escaping, html, html-entities, linq-to-xml, xhtml
Solution
It is impossible, and unnecessary, to know the motivation for using `"` in element content, but possible motives include: misunderstanding of HTML rules; use of software that generates such code (probably because its author thought it was “safer”); and misunderstanding of the meaning of `"`: many people seem to think it produces “smart quotes” (they apparently never looked at the actual results).
Anyway, there is never any need to use `"` in element content in HTML (XHTML or any other HTML version). There is nothing in any HTML specification that would assign any special meaning to the plain character " there.
As the question says, it has its role in attribute values, but even in them, it is mostly simpler to just use single quotes as delimiters if the value contains a double quote, e.g. `alt='Greeting: "Hello, World!"'` or, if you are allowed to correct errors in natural language texts, to use proper quotation marks, e.g. `alt="Greeting: “Hello, World!”"`
Problem
I am revising some XHTML files authored by another party. As part of this effort, I am doing some bulk editing via Linq to XML. I've just noticed that some of the original source XHTML files contain the `"` HTML entity in text nodes within those files. For instance: ``` <p>Greeting: "Hello, World!"</p> ``` And that when recovering the XHTML text via XElement.ToString(), the `"` entities are being replaced by plain double-quotes: ``` <p>Greeting: "Hello, World!"</p> ``` Question: Can anyone tell me what the motivation might have been for the original author to use the `"` entities instead of plain double-quotes? Did those entities serve a purpose which I don't fully appreciate? Or, were they truly unnecessary as I suspect? I do understand that `"` would be necessary in certain contexts, such as when there is a need to place a double-quote within an HTML attribute. For instance: ``` <a href="/images/hello_world.jpg" alt="Greeting: "Hello, World!""> Greeting</a> ```