Bug with bold italics underline and strikethrough

[b oop]A[i oop]B[s oop]C[u oop]D[/u oop]E[/s oop]F[/i oop]G[/b oop]

There's a bug in the parser, something surrounded by square braces which begins with b, i, u, s will be interpreted as the corresponding to bold/italic/underline/strikethrough tags. Thus the remainder of the text in the square bracket will not be part of the post output. First line of this post demonstrates the bug. Mods/admins can view it through post edit if required.

Work arounds:

• Don't use square brackets. Use () {} instead.
• Don't make the first character of a square bracket b,i,s or u.

For non-mods, the first line is below, but remove all ".".
[.b oop]A[.i oop]B[.s oop]C[.u oop]D[./u oop]E[./s oop]F[./i oop]G[./b oop]