The attached patch fixes filling inline JSDoc tags in js-mode. JSDoc allows
using tags in the form of:

> /**
>  * @foo
>  * Description. Link to other symbol {@link document.body.style}
>  * @bar

Where "@link" is the inline tag.

Currently, the paragraph starts at the "@" sign. Therefore filling the
Description line would never make the "@bar" tag appear in an other column
(that's what we want).

However, the link tag can be broken arbitrary and would make the tag harder
to read (without considering font-lock that is implemented in an other
package).

> /**
>  * @foo
>  * Description. Link to other symbol {@link
>  * document.body.style}
>  * @bar

I searched the JSDoc documentation[1] about line breaks inside an inline
tags and didn't find explicit information about whether or not it was
valid. Given that inline litterally means on one line, I guess we can
pretend the specification doesn't allow line breaks inside an inline tag.


[1] http://usejsdoc.org/about-block-inline-tags.html