id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
995	regex replace should support $1, $2, ...	zenogantner		"When using regex search, it should be possible to replace the found text with the content of captured buffers, denoted by $1, $2, etc.

I guess this also the behavior that Perl developers expect:
If you use regexes for replacing stuff, you expect $n to work ..."	enhancement	new	minor		editor	0.69		search, replace, regex