Regex Match only a Word or Words in ALL CAPS and nothing else

[hellyars]

Help.  My input is Field1.  I want to match words in ALL CAPS.  There can be 1-N words.  I want to ignore lines that might start with an ALL CAPS word or words but that contain other text.

I tried the following expression.  It works, but there is an anomaly.  It captures { -- when it should not.   How can I fix this?

if REGEX_Match([Field1], Uppercase([Field1]),0) then [Field1] else '' endif 

Example below.  Note { ends up in New when it should not.

Field1	New
var addthis_config = {
data_use_flash: false,
}	}
BIKESExcepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.ices in support o...
SPECIALIZED	SPECIALIZED
ROUBAIX PRO	ROUBAIX PRO
SWIM BIKE RUN	SWIM BIKE RUN

[DeanWest · Accepted solution]

Try using this Regular Expression in your Formula Tool 🙂

"^([A-Z\s]*)"

This expression essentially means, "If the string starts with a capital A-Z, only has capital letters A-Z following it, and has a white space following after, then create a match.". 

I've attached my proposed solution to this comment. Please let me know if you need any more help or assistance!

[Qiu · Accepted solution]

@hellyars 
  Basically same with @DeanWest but see the snapshot and sample flow.

[Qiu]

@hellyars 
Thanks for the mark!👍