Use $() rather than backticks to invoke git config.

Author: floatplane

git-icdiff

@@ -1,4 +1,4 @@
 #!/bin/sh
-CMD="git difftool --no-prompt --extcmd icdiff $@ | `git config --get core.pager`"
+CMD="git difftool --no-prompt --extcmd icdiff $@ | $(git config --get core.pager)"
 eval $CMD