Uppercase the first character of each word in the string:

Snippet: #reReplace('text string',"(^[a-z]|\s+[a-z])","\U\1","ALL")#

Input: 'text string'
Output: 'Text String'

Uppercase the first character of the first word in the string:

Snippet: #reReplace('text string',"(^[a-z])","\U\1","ALL")#

Input: 'text string'
Output: 'Text string'

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http://coldfusionsnippets.blogspot.com/2010/03/uppercase-first.html