ryancramerdesign/ProcessWire — pull request #669 by theGC (2014-09-13 14:12:04+00:00)
Title: Allow or operators within a fields only if visibility conditions

This update allows you to separate visibility conditions with a pipe delimited or operator, i.e.

**Show this field only if:**

`some_colour=red|green|blue`

Ryan, I noticed that you had mentioned this feature being added so hopefully this is inline with how it saw it working.