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Escaping closed parenthesis.

aatucker3
New User

Sep 22, 2009, 10:30 AM

Post #1 of 5 (1787 views)

Escaping closed parenthesis.	Can't Post

I'm trying to substitute the character ) with the characters \)

The code below won't work and I simply can't figure out why.

my $sReferenceHeading = "Something)";
$sReferenceHeading =~ s/\)/\\\)/g;

I expect the output to be "Something\)" but it ends up being "Something\\)"

Please advise.

1arryb
User

Sep 22, 2009, 11:28 AM

Post #2 of 5 (1784 views)

Re: [aatucker3] Escaping closed parenthesis. [In reply to]	Can't Post

Hi aatucker3,

Try escaping the paren with square brackets (i.e, treating them as a 1 character list):

Code

$ perl -e 'my $str = "Something)"; $str =~ s/[)]/\\)/; print "str = \"$str\"\n";' 
str = "Something\)" 
$

Cheers,

Larry

aatucker3
New User

Sep 22, 2009, 11:33 AM

Post #3 of 5 (1781 views)

Re: [1arryb] Escaping closed parenthesis. [In reply to]	Can't Post

Sweet, thanks 1arryb :)

FishMonger
Veteran

Sep 22, 2009, 11:45 AM

Post #4 of 5 (1777 views)

Re: [aatucker3] Escaping closed parenthesis. [In reply to]	Can't Post

The regex you posted worked for me.

Code

[root@rkb-2 ~]# cat test.pl 
#!/usr/bin/perl 
 
use strict; 
use warnings; 
 
my $sReferenceHeading = "Something)"; 
$sReferenceHeading =~ s/\)/\\\)/g; 
print $sReferenceHeading; 
 
[root@rkb-2 ~]# ./test.pl 
Something\)

You must have had an extra (i.e., 4th) backslash in the regex when you tested.

aatucker3
New User

Sep 22, 2009, 12:02 PM

Post #5 of 5 (1773 views)

Re: [FishMonger] Escaping closed parenthesis. [In reply to]	Can't Post

Thanks for the response FishMonger. I'll have to look at the version of perl I was using on the MAC. I just downloaded and installed the latest version of ActivePerl (5.10.1.1006) on my PC and it works both ways. I'll update this thread once I find out the version I was using. At least I know I'm not crazy now. Oh, and I DID check the variable before and after the swap to make sure there was no bad data.

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