Package: perl
Version: 5.004.04-3
I wrote a sample script whose behaviour seems strange to me. At least
I can't find in the doc why it behaves so, nor what I should write to
get the expected result.
==== The sample script
#!/usr/bin/perl
$TRANSLATION = '\1;$2';
$str = "ab";
$str =~ s{(.)(.)}{$TRANSLATION};
print $str . "\n";
$str = "ab";
$str =~ s{(.)(.)}{\1;$2};
print $str . "\n";
==== Its output
\1;$2
a;b
==== End of example
What I'd expect is that the 2 portions of this example would be
equivalent (I'd like to have $TRANSLATION provided from command-line).
Unfortunately, it seems that the variable expansion only occurs for
depth 1. Though I finally found a paragraph that seems somewhat
relevant to this, I'm not satisfied with this behaves and I'd be
grateful to anyone who has a solution/workaround for this.
It seems a similar phenomenon occurs in the left-part of s///: a
variable contaning eg. "$1" will have problems as well, though in this
case "\1" will work:
====
$DUMMY = '$1';
$str = "aba";
$str =~ s{(.)(.)($DUMMY)}{$1;$2};
print $str . "\n";
$str = "aba";
$str =~ s{(.)(.)($1)}{$1;$2};
print $str . "\n";
====
aba
a;b
====
Regards,
--
Yann Dirson <[EMAIL PROTECTED]> | Stop making M$-Bill richer & richer,
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