ng-pattern with regex having double quotes does not escape correctly

Question

I have a ng-pattern validation for a regex of ^[^\\./:*\\?\\\"<>\\|]{1}[^\\/:*\\?\\\"<>\\|]{0,254}$ which basically tests the invalid chars in filepath and teh limit.

Answer 1

I was trying to exclude ' and " in a ng-pattern which is similar to the problem above. I found a way to embed ' or " directly without having to use a scope variable: