On 05/18/2018, at 11:10, Matthew London <[email protected]
<mailto:[email protected]>> wrote:
> Turns out there are sometimes multiple lines both within my KEEP text and in
> my DELETE text.
Hey Matthew,
That's easy enough.
Let's start off by using a test string that provides better feedback:
&&&
TEXT STRING I WANT TO KEEP 1
&&&
TEXT STRING I WANT TO KEEP 2
Keep 2, Line 2
Keep 2, Line 3
###
TEXT STRING I WANT TO DELETE 1
&&&
TEXT STRING I WANT TO KEEP 3
Keep 3, Line 2
###
TEXT STRING I WANT TO DELETE 2
Delete 2, Line 2
Delete 2, Line 3
&&&
TEXT STRING I WANT TO KEEP 4
Keep 4, Line 2
###
TEXT STRING I WANT TO DELETE 3
To delete the “I want delete” strings:
Find (first pass with regex - keeping the ampersands):
(?s)^###.+?(?=^&&&|\z)
Replace with nothing.
A simple Perl Script text-filter to do the same as the above.
** The commented-out line removes the ampersands if uncommented.
Each line of this script (other than print) acts exactly like making making a
find/replace pass with BBEdit's Find dialog.
Perl's canonical search/replace syntax looks like this:
s/<search-pattern>/<replace-pattern>/<switches>
Personally I prefer to use exclamation points in place of the forward slashes,
so I don't have to escape forward slashes in paths, etc. (I find this syntax
easier to read.)
s!<search-pattern>!<replace-pattern>!<switches>
#!/usr/bin/env perl -0777 -nsw
s!^###.+?(?=^&&&|\z)!!igms;
# s!^&&&\n!!gm; # <-- Uncomment this line to remove the &&& lines.
print;
Uncomment means to remove the hash mark from the beginning of the line - i.e.
remove the comment symbol.
A simple sed text-filter to remove the desired text and leave the ampersands.
It finds the range of text between ^&&& and ^### – deletes the line with the
hash marks – and prints the rest. The syntax looks scary at first, but (this
pattern) breaks down to something very simple.
#!/usr/bin/env bash
# Keep the ampersands.
sed -En '/^&&&/,/^###/{ /^###/d; p; }'
A simple sed text-filter to remove the desired text and remove the ampersands.
It finds the range of text between ^&&& and ^### – deletes the line with the
ampersands – deletes the line with the hash marks – and prints the rest.
#!/usr/bin/env bash
Delete the ampersands.
sed -En '/^&&&/,/^###/{ /^&&&/d; /^###/d; p; }'
Like many things using text-filters in BBEdit can be a bit scary at first, but
after a while it becomes routine – and they become another valuable tool in the
toolbox.
--
Best Regards,
Chris
--
This is the BBEdit Talk public discussion group. If you have a
feature request or would like to report a problem, please email
"[email protected]" rather than posting to the group.
Follow @bbedit on Twitter: <http://www.twitter.com/bbedit>
---
You received this message because you are subscribed to the Google Groups
"BBEdit Talk" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/bbedit.
