Unicode is source code okay?

[Martin Desruisseaux]

Can I assume that the IDE of everyone is capable to handle unicode 
characters? I tend to use unicode a lot for drawing tables, trees, etc. 
Code are easier to read if we can write "└─ some node" instead than 
"\u2514\u2500 some node" in the Java source files. I also like to use 
the standard latitude and longitudes symbols, φ and λ, as local variables...

Martin