t / t4135 / diff-with quote.diffon commit t9114-git-svn-dcommit-merge.sh: use the $( ... ) construct for command substitution (78ba28d)
   1--- "postimage".txt.orig        2010-08-18 20:13:31.744002255 -0500
   2+++ "postimage".txt     2010-08-18 20:13:31.744002255 -0500
   3@@ -1 +1 @@
   4-preimage
   5+postimage