Fixed OneNote header regex

[dougbenham]

In my exports, my content usually has headers like this:

Title\r\nWednesday, November 08, 2017\r\n7:45 AM\r\n\r\nBody
Title\r\nWednesday, November 08, 2017\r\n12:45 PM\r\n\r\nBody
\r\n\r\nTitle\r\nWednesday, November 08, 2017\r\n12:45 PM\r\n\r\nBody

Note the..

• potential newlines at the beginning
• 1 or 2 digit hour
• AM or PM

This resulted in most of my pages not having the header stripped. This updated regex can handle these situations. Let me know any questions.

[alxnbl]

Hey @dougbenham , thanks a lot for the PR.
Could you join a sample notebook file to reproduce the bug please ?

[dougbenham]

Test.zip
pageTxt variable for this single-page notebook ends up being Title\r\nThursday, April 2, 2026\r\n10:42 PM\r\n\r\nBody\r\n when it gets into the RemoveOneNoteHeader method.

I am using Microsoft® OneNote® for Microsoft 365 MSO (Version 2508 Build 16.0.19127.20570) 64-bit

[alxnbl]

Thanks, I will review during the next few weeks