Linux: update xdg-utils to the latest git version and include a one-line fix in xdg-mime.

scripts/xdg-mime.in

 #!/bin/sh
 #---------------------------------------------
 #   xdg-mime
 #
 #   Utility script to manipulate MIME related information
 #   on XDG compliant systems.
 #
 #   Refer to the usage() function below for usage.
 #
 #   Copyright 2009-2010, Fathi Boudra <fabo@freedesktop.org>
@@ skipping 127 matching lines @@
         default_dir=`kde-config --path config 2> /dev/null | cut -d ':' -f 1`
         default_file="$default_dir/profilerc"
     fi
     if [ -z "$default_dir" ]; then
         DEBUG 2 "make_default_kde: No kde runtime detected"
         return
     fi
     DEBUG 2 "make_default_kde $vendor $mimetype"
     DEBUG 1 "Updating $default_file"
     mkdir -p "$default_dir"
-    [ -f $default_file ] || touch $default_file
+    [ -f "$default_file" ] || touch "$default_file"
     if [ x"$KDE_SESSION_VERSION" = x"4" ]; then
-        [ -f $default_file ] || touch $default_file
+        [ -f "$default_file" ] || touch "$default_file"
         awk -v application="$vendor" -v mimetype="$mimetype" '
     BEGIN {
         prefix=mimetype "="
         associations=0
         found=0
         blanks=0
     }
     {
         suppress=0
         if (index($0, "[Added Associations]") == 1) {
@@ skipping 36 matching lines @@
             if (!associations) {
                 print "[Added Associations]"
             }
             print prefix application
         }
         while (blanks > 0) {
             print ""
             blanks--
         }
     }
-' $default_file > ${default_file}.new && mv ${default_file}.new $default_file
+' "$default_file" > "${default_file}.new" && mv "${default_file}.new" "$default_file"
         eval 'kbuildsycoca4'$xdg_redirect_output
     else
         awk -v application="$vendor" -v mimetype="$mimetype" '
     BEGIN {
         header_start="[" mimetype " - "
         suppress=0
     }
     {
         if (index($0, header_start) == 1 )
             suppress=1
         else
             if (/^\[/) { suppress=0 }
 
         if (!suppress) {
             print $0
         }
     }
     END {
         print ""
         print "[" mimetype " - 1]"
         print "Application=" application
         print "AllowAsDefault=true"
         print "GenericServiceType=Application"
         print "Preference=1"
         print "ServiceType=" mimetype
     }
-' $default_file > ${default_file}.new && mv ${default_file}.new $default_file
+' "$default_file" > "${default_file}.new" && mv "${default_file}.new" "$default_file"
     fi
 }
 
 make_default_generic()
 {
     # $1 is vendor-name.desktop
     # $2 is mime/type
     # Add $2=$1 to XDG_DATA_HOME/applications/mimeapps.list
     xdg_user_dir="$XDG_DATA_HOME"
     [ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
     default_file="$xdg_user_dir/applications/mimeapps.list"
     DEBUG 2 "make_default_generic $1 $2"
     DEBUG 1 "Updating $default_file"
+    [ -f "$default_file" ] || touch "$default_file"
     awk -v mimetype="$2" -v application="$1" '
     BEGIN {
         prefix=mimetype "="
         indefault=0
         added=0
         blanks=0
         found=0
     }
     {
         suppress=0
@@ skipping 27 matching lines @@
                 print ""
                 print "[Default Applications]"
             }
             print prefix application
         }
         while (blanks > 0) {
             print ""
             blanks--
         }
     }
-' $default_file > ${default_file}.new && mv ${default_file}.new $default_file
+' "$default_file" > "${default_file}.new" && mv "${default_file}.new" "$default_file"
 }
 
 defapp_generic()
 {
     MIME="$1"
     xdg_user_dir="$XDG_DATA_HOME"
     [ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
     xdg_user_dir="$xdg_user_dir/$xdg_dir_name"
     xdg_system_dirs="$XDG_DATA_DIRS"
     [ -n "$xdg_system_dirs" ] || xdg_system_dirs=/usr/local/share/:/usr/share/
@@ skipping 555 matching lines @@
                 rm -f $kde_dir/$x.desktop
             fi
         done
         ;;
 esac
 
 update_mime_database $xdg_base_dir
 
 exit_success