install in rvm-1.0.1 vs install in rvm-1.0.2

@@ -74,11 +74,11 @@
 
 if [[ -z "$rvm_path" ]] ; then rvm_path="${rvm_prefix}rvm" ; fi
 
 source scripts/initialize
 
-if \grep -q 'scripts/rvm' $HOME/.bash* 2>/dev/null || \grep -q 'scripts/rvm' $HOME/.zsh* 2>/dev/null; then
+if \grep -q 'scripts/rvm' "$HOME"/.bash* 2>/dev/null || \grep -q 'scripts/rvm' "$HOME"/.zsh* 2>/dev/null; then
   if [[ -d "$rvm_path" ]] && [[ -s "${rvm_path}/scripts/rvm" ]] ; then
     export upgrade_flag=1
   else
     export upgrade_flag=0
   fi
@@ -91,11 +91,11 @@
 #
 # Setup & Configuration
 #
 item="$(tput setaf 2)* $(tput sgr0)"
 question="\n$(tput setaf 2)<?>$(tput sgr0)"
-cwd=$PWD
+cwd="$PWD"
 source_path="${source_path:-$cwd}"
 rvm_archives_path="${rvm_archives_path:-"$rvm_path/archives"}"
 rvm_src_path="${rvm_src_path:-"$rvm_path/src"}"
 rvm_log_path="${rvm_log_path:-"$rvm_path/log"}"
 
@@ -149,11 +149,11 @@
 done ; unset dir_name
 
 spinner
 if [[ ! -s "$rvm_config_path/user" ]] ; then
   \mkdir -p "$rvm_config_path/"
-  echo '# Users settings file, overrides db file settings and persists across installs.' >> $rvm_config_path/user
+  echo '# Users settings file, overrides db file settings and persists across installs.' >> "$rvm_config_path/user"
 fi
 
 scripts=("monitor" "match" "log" "install" "color" "db" "fetch" "log" "set" "package")
 for script_name in "${scripts[@]}" ; do
   spinner
@@ -168,30 +168,30 @@
   spinner && sleep $sleep
   \rm -f "$rvm_bin_path/$file"
   \cp -f "$source_path/binscripts/$file" $rvm_bin_path/
 done
 spinner
-chmod +x $rvm_bin_path/*
+chmod +x "$rvm_bin_path"/*
 
 #
 # RC Files
 #
 spinner
 if [[ -n "$rvm_auto_flag" ]] ; then
   printf "Checking rc files... ($rvm_rc_files)"
   if [[ "$rvm_loaded_flag" != "1" ]] ; then
-    for rcfile in $(echo $rvm_rc_files) ; do
+    for rcfile in $(printf $rvm_rc_files) ; do
       if [[ ! -f $rcfile ]] ; then \touch $rcfile ; fi
       if [[ -s "$HOME/.profile" ]] ; then
         if ! \grep -q '.profile' "$rcfile" ; then
           echo "    Adding 'if [[ -s \$HOME/.profile ]] ; then source \$HOME ; fi' to $rcfile."
-          printf "\n# rvm-install added line:\nif [[ -s \$HOME/.profile ]] ; then source \$HOME/.profile ; fi\n" >> $rcfile
+          printf "\n# rvm-install added line:\nif [[ -s \$HOME/.profile ]] ; then source \$HOME/.profile ; fi\n" >> "$rcfile"
         fi
       fi
       if ! \grep -q "scripts\/rvm" "$rcfile" ; then
         echo "    Adding 'if [[ -s $rvm_scripts_path/rvm ]] ; then source $rvm_scripts_path/rvm ; fi' to $rcfile."
-        printf "\n# rvm-install added:\nif [[ -s $rvm_scripts_path/rvm ]] ; then source $rvm_scripts_path/rvm ; fi\n" >> $rcfile
+        printf "\n# rvm-install added:\nif [[ -s $rvm_scripts_path/rvm ]] ; then source $rvm_scripts_path/rvm ; fi\n" >> "$rcfile"
       fi
     done
   fi
 fi
 
@@ -252,48 +252,47 @@
 # Migrate old gemset directories to new gemset pattern.
 #
 spinner
 printf "\r*" # Stop spinner.
 
-for gemset in $rvm_path/gems/*\%* ; do
+for gemset in "$rvm_path"/gems/*\%* ; do
   new_path=${gemset/\%/${rvm_gemset_separator}}
   if [[ -d "$gemset" ]] && [[ ! -d "$new_path" ]] ; then
-    printf "\n    Renaming $(basename $gemset) to $(basename $new_path) for new gemset separator."
-    mv $gemset $new_path
+    printf "\n    Renaming $(basename "$gemset") to $(basename "$new_path") for new gemset separator."
+    mv "$gemset" "$new_path"
   fi
 done
 
-for gemset in $rvm_path/gems/*\+* ; do
+for gemset in "$rvm_path"/gems/*\+* ; do
   new_path=${gemset/\+/${rvm_gemset_separator}}
   if [[ -d "$gemset" ]] && [[ ! -d "$new_path" ]] ; then
-    printf "\n    Renaming $(basename $gemset) to $(basename $new_path) for new gemset separator."
+    printf "\n    Renaming $(basename "$gemset") to $(basename "$new_path") for new gemset separator."
     mv $gemset $new_path
   fi
 done
-for gemset in $rvm_path/gems/*\@ ; do
+
+for gemset in "$rvm_path"/gems/*\@ ; do
   new_path=$(echo $gemset | sed -e 's#\@$##')
   if [[ -d "$gemset" ]] && [[ ! -d "$new_path" ]] ; then
-    printf "\n    Fixing: $(basename $gemset) to $(basename $new_path) for new gemset separator."
-    mv $gemset $new_path
+    printf "\n    Fixing: $(basename "$gemset") to $(basename "$new_path") for new gemset separator."
+    mv "$gemset" "$new_path"
   fi
 done
 
 # Move from legacy defaults to the new, alias based system.
 if [[ -s "$rvm_config_path/default" ]]; then
   original_version="$(basename "$(\grep GEM_HOME "$rvm_config_path/default" | awk -F"'" '{print $2}' | sed "s#\%#${rvm_gemset_separator}#")")"
   if [[ -n "$original_version" ]]; then
-    $rvm_scripts_path/alias create default "$original_version" &> /dev/null
-  fi
-  unset original_version
+    "$rvm_scripts_path/alias" create default "$original_version" &> /dev/null
+  fi ; unset original_version
   \rm -rf "$rvm_config_path/default"
 fi
 
 #
 # End of gemset migration.
 #
-
 printf "\n    Correct permissions for base binaries in $rvm_bin_path..."
-\mkdir -p $rvm_bin_path
+\mkdir -p "$rvm_bin_path"
 for file in rvm rvmsudo rvm-shell rvm-auto-ruby; do
   [[ -s "$rvm_bin_path/$file" ]] && chmod +x "$rvm_bin_path/$file"
 done; unset file
 printf "\n    Copying manpages into place."
 for man_file in $(\ls "$install_source_path/man"); do