Style: Space after backslash (reference operator)

[rwp0]

To affect Reformat Code (Ctrl+Alt+L)

And probably for other unary operators as well.

[hurricup]

Could you please elaborate? Do you want this to be configurable?

[rwp0]

Yes, within Code Style, Perl5, Perl5-Specific settings:

[rwp0]

The thing is spacing enhances readability, and many people choose Perl (over Bash for instance) for scripting because it lets us input whitespace everywhere without escapes and such.