Syncing bashdb4.4 and bashdb5 trees, wrap more source command args in…

… quotes

command/info_sub/args.sh

@@ -98,12 +98,12 @@ if [[ $0 == ${BASH_SOURCE[0]} ]] ; then
     # FIXME: put some of this into a mock
     _Dbg_libdir=${top_dir}
     for _Dbg_file in pre vars ; do
-	source ${top_dir}/init/${_Dbg_file}.sh
+	source "${top_dir}/init/${_Dbg_file}.sh"
     done
     for _Dbg_file in frame msg file journal save-restore alias ; do
-	source ${top_dir}/lib/${_Dbg_file}.sh
+	source "${top_dir}/lib/${_Dbg_file}.sh"
     done
-    source ${top_dir}/command/help.sh
+    source "${top_dir}/command/help.sh"
     _Dbg_set_debugger_entry
     _Dbg_frame_adjusted_pos() {
 	typeset -i i=${1:-0}

init/term-background.sh

@@ -111,7 +111,7 @@ exit_if_not_sourced() {
 # User should set up RGB_fg and RGB_bg arrays
 xterm_compatible_fg_bg() {
     typeset fg bg junk
-    stty -echo >/dev/null 2>&1
+    if stty -echo >/dev/null 2>&1; then
     # Issue command to get both foreground and
     # background color
     #            fg       bg
@@ -126,6 +126,9 @@ xterm_compatible_fg_bg() {
     IFS='/' read -ra RGB_bg <<< $bg
     typeset -p RGB_fg
     typeset -p RGB_bg
+    else
+	stty echo 2>/dev/null
+    fi
     return 0
 }