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perl regexp: no match across newlines

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# 1  
Old 05-14-2010
perl regexp: no match across newlines
Hi. Here's a tricky one (at least to me):

I have a file named theFile.txt (UTF-8) that contains the following:
Code:
a
b
c

When I execute
Code:
perl -pe 's|a.*c|d|sg' theFile.txt

in bash 3.2 on MAC OS X 10.6, I get no match, i.e. the result is
Code:
a
b
c

again. Any clues why?
# 2  
Old 05-14-2010
Quote:
Originally Posted by BatManWSL
...
I have a file named theFile.txt (UTF-8) that contains the following:
Code:
a
b
c

When I execute
Code:
perl -pe 's|a.*c|d|sg' theFile.txt

in bash 3.2 on MAC OS X 10.6, I get no match, i.e. the result is
Code:
a
b
c

again. Any clues why?
You will need to undefine the value of $/ in order to match multiline patterns in Perl -

Code:
$
$
$ cat -n theFile.txt
     1  a
     2  b
     3  c
$
$
$ perl -pe 'BEGIN {undef $/} s|a.*c|d|sg' theFile.txt
d
$
$

tyler_durden
This User Gave Thanks to durden_tyler For This Post:
BatManWSL
# 3  
Old 05-17-2010
Perfect, that's it. Thanks a bunch! Smilie
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