Find Blank Lines Using Perl Style Regexes

[glen_ap]

Hi,

I prefer to use Perl style regular expressions, however a simple regex that I used prior the Boost regex library was to search for blank lines.

Here is the search string when using Unix style (not Perl style):
"^\p"

Here is the UE regex style (from the FAQ):
"^p$"

Here is what I thought the Perl style should be:
"^\n"

But that doesn't work. I get a "Search string not found." message.

I have also tried with no success:
"\n\n"
"\n$"
"^\n$"

I have read the Boost documentation here:
http://www.boost.org/libs/regex/doc/syntax_perl.html

But I can't figure out what the syntax should be. Can anyone help?

Thanks!
Glen

[Mofi]

\n matches only the linefeed character (hex 0A). If you see in the status bar at bottom of the UltraEdit window for the current file the word DOS, your file is loaded and edited with DOS line terminations carriage return + linefeed. So you have to use \r\n which matches 0D 0A. So try ^\r\n or better ^\r*\n.

See also Deleting blank lines using Perl regular expressions. Some problems reported at this forum thread are already fixed, but some Perl problems still exist with current version 12.10a.

[glen_ap]

So you have to use \r\n which matches 0D 0A.

Thanks! Worked like a charm.