X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=funcs%2Fgsu;h=ca2016a921335354698882caf508c0b09ae81cf1;hb=c2d99a2ad3c90aa7fb96ab9da2badf70ff5acc7b;hp=129757ace42a3cdeaa0b72cc582f97a3eb3d289c;hpb=dc19534d89830005716d9c9d90ea94c794ae4700;p=gsu.git

diff --git a/funcs/gsu b/funcs/gsu
index 129757a..ca2016a 100644
--- a/funcs/gsu
+++ b/funcs/gsu
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # gsu -- the global subcommand utility
 # (C) 2006-2009 Andre Noll
 
@@ -163,6 +163,7 @@ com_prefs()
 			printf " [$default_value]"
 		fi
 		echo
+		[[ -n "$help_text" ]] && sed -e '/^[	]*$/d; s/^[ 	]*/#	/g' <<< "$help_text"
 		printf "$name=$val"
 		[[ "$val" == "$default_value" ]] && printf " # default"
 		echo
@@ -283,14 +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]}"
 
@@ -304,7 +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
@@ -319,8 +331,7 @@ _gsu_check_options()
 			return
 		esac
 
-		eval ${gsu_config_var_prefix}_$name='"'${val:=$default_value}'"'
-
+		eval ${gsu_config_var_prefix}_$name="\"${val:=$default_value}\""
 		# Check option type. ATM, only num and string are supported
 		# Other types may be added without breaking compatibility
 		case "$option_type" in
@@ -345,12 +356,15 @@ gsu()
 	local i
 
 	_gsu_self="$(basename $0)"
+	gsu_name="${gsu_name:=$_gsu_self}"
 	gsu_config_var_prefix="${gsu_config_var_prefix:=$gsu_name}"
 	_gsu_init_errors
 	_gsu_check_options
 	if [[ "$ret" -lt 0 ]]; then
-		gsu_err_msg
-		exit 1
+		if [[ "$1" != "help" && "$1" != "man" ]]; then
+			gsu_err_msg
+			exit 1
+		fi
 	fi
 	_gsu_available_commands
 	gsu_cmds="$result"