I try to search blank messages in svn log using tortoise svn. I use regex ^$ and set search type 'Messages'. But for some reason it returns me revisions with not blank messages. However there are some revisions with blank messages.
Is it correct behaviour?
It would have been matching messages with multiple lines with atleast one of the lines being empty ( as ^ and $ mark start and end of line and there is no way to use multiline options). I don't see if there is a way to not show these with TortoiseSVN as the search is not really mean't to be very powerful. But it should still show the ones that really do have completely empty messages.
Update:
See if the following works for you:
!^.+$
(look for messages that do NOT have some non empty lines. Seems to work for me.)