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In Salesforce there are 3 different Text Area fields:

Text Area, Text Area (Long), and Text Area (Rich).

I'm doing some processing in a custom class and I need to distinguish between the 3 different kinds. My first thought was using Describe but the Schema.DisplayType enum value for all three is simply TextArea.

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This seems to work for short vs long: http://www.fishofprey.com/2011/03/find-length-of-salesforce-field-in-apex.html

When I test the following in my org:

System.debug(
    Schema.SObjectType.Contact.fields.Description.getLength()
);

I get 32000 back. When I try custom text areas, rich or not, I get the appropriate values back too. Doesn't indicate richness though. For that you can use .Description.isHtmlFormatted() which seems to return TRUE for rich and FALSE for plaintext.

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