I need a regex expression to capture everything preceding a colon within the first paragraph only of a multi-paragraph string.
Input1:
Rochester: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum
Output1:
Rochester
Everything that precedes the colon in the first paragraph.
Input2:
Rochester Hills: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum
Output2:
Rochester Hills
Everything that precedes the colon in the first paragraph.
Input3:
Rochester Hills: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Sisters: sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum
Output3:
Rochester Hills
Only that which precedes the colon in the first paragraph, completely ignoring the string that precedes the colon in a later paragraph.
Input4:
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Sisters: sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum
Output 4: Nothing should be captured as a colon does not appear in the first paragraph.
Thanks!
EDIT: Sorry that I forgot about my previous efforts. I had been working with:
(?=.*:[ ]).*?(?=[:][ ])
This works for another instance where the colon never appears in later paragraphs. But for this case I did not understand how I could modify it to only look within the first paragraph.
