Close #200, quote Exec= and use \s in TryExec=

Author: probonopd

desktopintegration

@@ -214,7 +214,7 @@ if [ -e "$DESTINATION_DIR_DESKTOP/$VENDORPREFIX-$DESKTOPFILE_NAME" ] ; then
   # echo "$DESTINATION_DIR_DESKTOP/$VENDORPREFIX-$DESKTOPFILE_NAME already there"
   EXEC=$(grep "^Exec=" "$DESTINATION_DIR_DESKTOP/$VENDORPREFIX-$DESKTOPFILE_NAME" | head -n 1 | cut -d " " -f 1)
   # echo $EXEC
-  if [ "Exec=$APPIMAGE" == "$EXEC" ] ; then
+  if [ "Exec=\"$APPIMAGE\"" == "$EXEC" ] ; then
     exit 0
   fi
 fi
@@ -232,10 +232,14 @@ if [ -z "$SKIP" ] ; then
   # applications directory when run as a non-root user,
   # and to /usr/share/applications if run as root
   # but that does not really work for me...
+  #
+  # For Exec we must use quotes
+  # For TryExec quotes is not supported, so, space must be replaced to \s
+  # https://askubuntu.com/questions/175404/how-to-add-space-to-exec-path-in-a-thumbnailer-descrption/175567
   desktop-file-install --rebuild-mime-info-cache \
-    --vendor=$VENDORPREFIX --set-key=Exec --set-value="${APPIMAGE} %U" \
+    --vendor=$VENDORPREFIX --set-key=Exec --set-value="\"${APPIMAGE}\" %U" \
     --set-key=X-AppImage-Comment --set-value="Generated by ${THIS}" \
-    --set-icon="$ICONFILE" --set-key=TryExec --set-value="$APPIMAGE" "$DESKTOPFILE" \
+    --set-icon="$ICONFILE" --set-key=TryExec --set-value=${APPIMAGE// /\\s} "$DESKTOPFILE" \
     --dir "$DESTINATION_DIR_DESKTOP"
   chmod a+x "$DESTINATION_DIR_DESKTOP/"*
   RESOURCE_NAME=$(echo "$VENDORPREFIX-$DESKTOPFILE_NAME" | sed -e 's/.desktop//g')