regex to add new line after period, but only if followed by a capital character
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 Hello, 
 I have some text that looks like this:
 Once upon a time, a princess lived in a beautiful castle.She was bored and wanted an adventure.Along came a prince who took her far from her home. Then she was happy to stay home.
 I need it to look like this:
 Once upon a time, a princess lived in a beautiful castle.
 She was bored and wanted an adventure.
 Along came a prince who took her far from her home. Then she was happy to stay home.Here is what I’ve tried: 
 Search for: .[[:upper:]]
 replace with: .\r[[:upper:]]
 which resulted in:
 Once upon a time, a princess lived in a beautiful castle.
 [[:upper:]]he was bored and wanted an adventure.
 [[:upper:]]long came a prince who took her far from her home. Then she was happy to stay home.I only want a new line character if the period is followed by an uppercase character, not a space. Any help would be greatly appreciated. 
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 Find: \.(?=\u)
 Replace:.\r\n
 Search mode: Regular expression
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 @Alan-Kilborn Thanks! Worked a treat! 
