I am having trouble finding the correct grep expression for not matching entire lines in BBEdit that do not contain a date, despite having found many "match ... not containing" topics on this on the web...
I have this text document:
Some Text
Some more text,even more text,2015-06-17,2015-06-20
A third line of text
Last line of text, 2015-06-17
This expression will select all lines that contain a date reference, in the form of 4 digits + "-" + 2 digits + "-" + 2 digits
^.*\d\d\d\d-\d\d-\d\d.*$
I would like to match exactly the opposite, with the intention to remove all lines that do not contain a date reference. I have tried solutions like
^.*[^\d\d\d\d-\d\d-\d\d].*$
but with no success so far. Can someone point me in the right direction? Thank you.
BBEdit supports Perl-Style Pattern Extensions (see page 183 of the manual) including negative lookaheads (?!...).
I believe this will do what you want:
^((?![\d\d\d\d-\d\d-\d\d]).)*$