The automated process expected the end of line markers to be LF to be read by the SSIS package properly. I copied several lines using Notepad ++ and it automatically used CRLF markers. Recently, while troubleshooting why data wont import successfully as part of an automated process, I was pulling a subset of data out of the main text file, but the end of line markers weren't correct. Windows uses both CRLF at the end of a line, whereas Unix uses only a LF. Essentially, this finds every instance of ‘date: ‘ which has an actual date/timestamp after it, saves it, and replaces ‘date:’ with ‘updated:’.End of Line characters include CR or LF. The magic here is the ‘(\1)’ - that instructs the regex interpreter to recall the first saved match, which in this case is the date/timestamp. Recovering that information and using it in the Replace function of Notepad++ looks like this: updated: (\1) The parenthesis tells the regex interpreter that this match should be saved. The format was “YYYY-MM-DD HH:MM:SS”, so the above regex found all that mess after ‘date:’ The important part are the parenthesis around the expression (i.e., the part in brackets). The dates were a complete timestamp in 24-hour time. The Notepad++ regex that matched the ‘date:’ line I was looking for was this: date: (*) Then you’ll be in a good place to do the rest of these steps: Notepad++ Search and Replace with Regex Matchesįirst off, set the Search Mode to Regular Expression. Heck, grep even has a command-line options to control which implementation of regex it uses. The sad state of regular expressions is that expressions are not entirely portable between different implementations of regex searchers. It should be noted that this is strictly unique to Notepad++. I’ve cracked the code of how to do it in Notepad++. Regular expressions can find things easily, but I’m also told by witches that it can store the things it finds for later use, and that this is a powerful tool at their disposal.
I needed to identify lines that matched “date: ” and then change it to “updated: ”. It came up when I wanted to do a mass-rename of a front-matter attribute in my blog posts. I recently have figured out how to perform one new nifty trick with Notepad++ and regular expressions: replacing text with a regular expression match.
I don’t claim mastery - I just know enough to be alternately useless and useful. Anyone who claims mastery over regular expressions is a witch.
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