When I try to customize the compose window toolbar, the "replace signature" command isn't an option.
My OS is windows 7 which isn't an option on the OS selection in Bugzilla, but I suspect the bug is not OS specific.
Changes related to this bug have been committed.
Please check latest Git and update the bug accordingly.
You can also get the patch from:
++ ChangeLog 2014-02-03 15:04:03.094018051 +0100
Merge: 5b99b3e 0b253d9
Author: Colin Leroy <email@example.com>
Date: Mon Feb 3 15:04:02 2014 +0100
Merge branch 'master' of file:///home/git/claws
Author: Paul <firstname.lastname@example.org>
Date: Mon Feb 3 14:03:17 2014 +0000
implement RFE bug 3053, 'Can't add "replace signature" to the toolbar'