I want to be able to write an attribution at the end of a quote/verse environment that spans multiple lines. I found this answer which suggests this piece of code
\def\signed#1{{\unskip\nobreak\hfil\penalty50
\hskip2em\hbox{}\nobreak\hfil\sl#1
\parfillskip=0pt \finalhyphendemerits=0 \par}}
I have adapted it by changing its name from \signed to \attribute, removing \sl and replacing it with \small.
I have tried using this \attribute{...} code on separate lines to achieve what I'm looking for. However, this requires me to manually reduce the vertical space between lines, I'm currently using vspace{-0.15cm}. This is an inelegant solution I know, is there a better way to do this? Ideally, I wouldn't have to use \attribute{...} on separate lines like this and could just write \attribute{First line \\ Second line \\ Third Line} and it would get all the spacing correct. (If there was a way I could specify the line spacing for the attribution using \setstretch that would be ideal)
Code
\documentclass[11pt]{book}
\usepackage[a5paper,inner=2.5cm,outer=1.5cm,bottom=2.5cm]{geometry}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{ebgaramond}
\usepackage{microtype}
\usepackage{blindtext}
\usepackage{setspace}
\setstretch{1.1}
\def\attribute#1{{\unskip\nobreak\hfil\penalty50
\hskip2em\hbox{}\nobreak\hfil\small #1
\parfillskip=0pt \finalhyphendemerits=0\par}}
\begin{document}
\blindtext
%
\begin{verse}
There is pleasure in the pathless woods,\\
There is rapture in the lonely shore, \\
There is society where none intrudes,\\
By the deep Sea, and music in its roar:\\
I love not Man the less, but Nature more.
\attribute{\textsc{Lord Byron}}
\vspace{-0.15cm}
\attribute{\textit{Childe Harold’s Pilgrimage}}
\vspace{-0.15cm}
\attribute{Canto IV, st. 178--186}
\end{verse}
%
\blindtext
\end{document}



\small? Also, is there a way to control line spacing within it, using\setstretchperhaps? – Milo Jun 17 '18 at 22:15\setstackgap{L}{...}does the line spacing trick. – Steven B. Segletes Jun 17 '18 at 22:19