Test thread — to test things out. Do not lock!

You can even nest a blur spoiler inside a summary spoiler AKA “Hide details” as the menu calls it:

Summary

This text This text will be blurredwill be hidden

The opposite, a summary spoiler inside a blur spoiler does not work quite right; the summary works, but the outer blur does not:

[spoiler]This text

Summary

will

be blurred[/spoiler]

Some experimentation shows that a blur spoiler can contain at most one consecutive paragraph break or it’ll malfunction, while the result of a summary spoiler generates multiple adjacent paragraph breaks, plus whatever adjacent break(s) may be in the payload.

Like this:

Here’s a blur with no breaks, but long enough to word wrap:
This text This text will sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsfsdfsd dfsd be blurredwill be hidden.


Here’s the same thing with one paragraph break stuck in the middle:
This text This text will sfsdfsd sdfsddfs
sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsfsdfsd dfsd be blurred
will be hidden.


With multiple separated paragraph breaks stuck in the middle:
This text This text will sfsdfsd sdfsddfs sdfsd
sfsdfsd sdfsddfs
sdfsd sfsdfsd sdfsddfs sdfsd
sfsdfsd sdfsddfs sdfsfsdfsd dfsd be blurred
will be hidden.


With two adjacent paragraph breaks stuck in the middle it goes haywire:
This text [spoiler]This text will sfsdfsd sdfsddfs

sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsfsdfsd dfsd be blurred[/spoiler]will be hidden.
Oops.


You can work around this limitation by using two adjacent HTML <br/> tags to give you your desired visible paragraph break(s) with a blank line between them like this:
This text This text will sfsdfsd sdfsddfs

sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsd

sfsdfsd sdfsddfs sdfsfsdfsd dfsd be blurred
will be hidden.


You could also use a single ordinary paragraph break with a <br/> just ahead or behind the break like this:
This text This text will sfsdfsd sdfsddfs

sdfsd sfsdfsd sdfsddfs sdfsd sfsdfsd sdfsddfs sdfsd

sfsdfsd sdfsddfs sdfsfsdfsd dfsd be blurred
will be hidden.

I personally prefer the dual <br/>s method but that’s just HTML coder’s taste, not functional difference (that I have noticed).

ETA: Here’s a whole thread on nested spoilers: