User:Archie.m.vist
Going to use this to testbed solutions to the m/u logo issue. I mentioned in the /m/ thread that a MediaWiki regex could be used to sanitise the arguments but those don't seem installed.
BEHOLD, REGULAR EXPRESSIONS
The following (#rreplace:m/u|\/|_) should display m_u: {{#rreplace:m/u|\/|_}}
and this should be looking for M_u_icon.png, but still display /m/u/: /m/u/ [[File:{{#rreplace:m/u|\/|_}} icon.png|25px|link=/m/u/]]
Finally, this should just show the /mu/ icon as usual: /mu/
other slashes
Normal slash (current, not working): /m/u/
Fraction slash: File:M⁄u icon.png /m⁄u/
Division slash: File:M∕u icon.png /m∕u/