From 1d3a993452ac10a1c222c72693746a957179e2b6 Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@systemlinux.org>
Date: Tue, 2 Mar 2010 16:00:23 +0100
Subject: [PATCH 1/1] gsu: Make command line vars trump config file vars.

This allows to overrule preferences  given in the config file by
using command line like this

	lv=foo snapfsck

which ignores the setting of lv in ~/.snapfsck.rc and uses the value
"foo" instead.
---
 funcs/gsu | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/funcs/gsu b/funcs/gsu
index add1be4..d72f54f 100644
--- a/funcs/gsu
+++ b/funcs/gsu
@@ -284,14 +284,20 @@ export -f com_help
 # for errors and parses the config file.
 _gsu_check_options()
 {
-	local i conf="${gsu_config_file:=$HOME/.$gsu_name.rc}"
+	local i conf="${gsu_config_file:=$HOME/.$gsu_name.rc}" val
+
+	for ((i=0; i < ${#gsu_options[@]}; i++)); do
+		eval "${gsu_options[$i]}"
+		eval val='"'\$$name'"'
+		eval orig_${gsu_config_var_prefix}_$name='"'${val}'"'
+	done
 
 	[[ -r "$conf" ]] && source "$conf"
 
 	for ((i=0; i < ${#gsu_options[@]}; i++)); do
 		local name= option_type= default_value= required=
 		local description= help_text=
-		local val
+		local val orig_val
 
 		eval "${gsu_options[$i]}"
 
@@ -305,7 +311,12 @@ _gsu_check_options()
 		echo "$name" | grep '^[a-zA-Z][a-zA-Z_0123456789]*$' &> /dev/null;
 		[[ $? -ne 0 ]] && return
 
-		eval val='"'\$$name'"'
+		eval orig_val='"'\$orig_${gsu_config_var_prefix}_$name'"'
+		if [[ -z "$orig_val" ]]; then
+			eval val='"'\$$name'"'
+		else
+			val="$orig_val"
+		fi
 		case "$required" in
 		true|yes)
 			ret=-$E_GSU_NEED_VALUE
-- 
2.39.2