"replaces a blank" (or, "replaces with a blank", I assume you mean). That's very pertinant information. Something is fishy there: 

$ perl5.8 -e '$x = "a b c d"; $a = "blah"; $b{$a} = "foo"; $x =~ s/a b
+/$b{$a}/; print "$x\n"'
foo c d

[download]
Works fine here ... so, yes, there's something incomplete here. Perhaps you should post a complete test line that you expect to be modified by all of this so we can take a closer look.

In reply to Re^7: replace with hash value?! by Tanktalus
in thread replace with hash value?! by lcollins

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