perl-quote

perl-quote.el converts between Perl single-quote '' and double-quote "" strings in Emacs. It's mainly a handy way to swap between the two forms when there's no interpolations so single quotes is enough, or when the backslashing is getting out of control and you want to go to the other form.

perl-quote.el is free software (free as in freedom), published under the terms of the GNU General Public License (v3 or up).

Download version 5,

FTP perl-quote.el (13k, and sig)
HTTP perl-quote.el
RSYNC perl-quote.el
Or from my ELPA archive.
Or Debian package my miscbits-el.

The sig file is a Gnu PG ascii armoured signature generated from my key.

There's lots of other string conversions which could be made, like going from '' to q{} with an automatic choice of delimiter. But plain single to double or back has been enough for me.