I'm trying to remove line breaks and white spaces in Rich Text Area field when Text Area is not containing any words or characters.I'm doing this by using workflow.I used "^[\\s<>br]+$"  regex,but this is not satisfield in Rule criteria.
Any one can suggest the correct regex to do this?

Thanks in advance

Am having a hard time calculating/getting the business hours in workflow rules.
Here is my requirement: Automatically move the case to a "Resolved" state and send an email to the customer notifying them that their case is resolved and will be closed in 72 hours. 
If there is no email from customer,automatically close the case after 72 hours(Business Hours).
If customer respond for a particular case within 72 hours(Business Hours),we should not close the case.
If i change business hours as per my need,it should send email based on that business hours only.
How do we get business hours in the time based workflow?

I'm trying to remove line breaks and white spaces in Rich Text Area field when Text Area is not containing any words or characters.I'm doing this by using workflow.I used "^[\\s<>br]+$"  regex,but this is not satisfield in Rule criteria.
Any one can suggest the correct regex to do this?

Thanks in advance