More quotes.

I think it has been Diane who said we could almost put the entire
script into quotes - she's been right.

PR: 9550


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@273099 13f79535-47bb-0310-9956-ffa450edef68

WHATSNEW

@@ -7,6 +7,9 @@ Fixed bugs:
 * The sh wrapper script didn't work under Cygwin if ANT_HOME wasn't
   set with a Unix style filename.
 
+* The sh wrapper script could fail if you started Ant from a directory
+  with whitespace in its name.
+
 Other changes:
 --------------
 

src/script/ant

@@ -39,8 +39,8 @@ if [ -z "$ANT_HOME" ] ; then
     ANT_HOME=/opt/ant
   fi
 
-  if [ -d ${HOME}/opt/ant ] ; then 
-    ANT_HOME=${HOME}/opt/ant
+  if [ -d "${HOME}/opt/ant" ] ; then 
+    ANT_HOME="${HOME}/opt/ant"
   fi
 
   ## resolve links - $0 may be a link to ant's home
@@ -66,7 +66,7 @@ if [ -z "$ANT_HOME" ] ; then
   # make it fully qualified
   ANT_HOME=`cd "$ANT_HOME" && pwd`
 
-  cd $saveddir
+  cd "$saveddir"
 fi
 
 # For Cygwin, ensure paths are in UNIX format before anything is touched