Pass a space-separated list of variables into filter-bash-environment.py and

generate the final regex on the python side instead of in bash. Also, properly
anchor the regex so that it actually works.

svn path=/main/trunk/; revision=9443

2 files changed, 5 insertions, 9 deletions

diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index 3268c9b0e..061e1961c 100755
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -1417,7 +1417,7 @@ PORTAGE_MUTABLE_FILTERED_VARS="AA HOSTNAME"
 # builtin command. To avoid this problem, this function filters those
 # variables out and discards them. See bug #190128.
 filter_readonly_variables() {
-	local x filtered_vars var_grep
+	local x filtered_vars
 	local readonly_bash_vars="DIRSTACK EUID FUNCNAME GROUPS
 		PIPESTATUS PPID SHELLOPTS UID"
 	local filtered_sandbox_vars="SANDBOX_ACTIVE SANDBOX_BASHRC
@@ -1445,17 +1445,12 @@ filter_readonly_variables() {
 			${PORTAGE_MUTABLE_FILTERED_VARS}
 		"
 	fi
-	set -f
-	for x in ${filtered_vars} ; do
-		var_grep="${var_grep}|${x}"
-	done
-	set +f
-	var_grep=${var_grep:1} # strip the first |
+
 	# The sed is to remove the readonly attribute from variables such as those
 	# listed in READONLY_EBUILD_METADATA, since having any readonly attributes
 	# persisting in the saved environment can be inconvenient when it
 	# eventually needs to be reloaded.
-	"${PORTAGE_BIN_PATH}"/filter-bash-environment.py "${var_grep}" | sed -r \
+	"${PORTAGE_BIN_PATH}"/filter-bash-environment.py "${filtered_vars}" | sed -r \
 		-e 's:^declare[[:space:]]+-r[[:space:]]+:declare :' \
 		-e 's:^declare[[:space:]]+-([[:alnum:]]*)r([[:alnum:]]*)[[:space:]]+:declare -\1\2 :'
 }
diff --git a/bin/filter-bash-environment.py b/bin/filter-bash-environment.py
index 0a88f710b..c5d5da45e 100755
--- a/bin/filter-bash-environment.py
+++ b/bin/filter-bash-environment.py
@@ -102,6 +102,7 @@ if __name__ == "__main__":
 		parser.error("Missing required PATTERN argument.")
 	file_in = sys.stdin
 	file_out = sys.stdout
+	var_pattern = "^(%s)$" % "|".join(args[0].split())
 	filter_bash_environment(
-		compile_egrep_pattern(args[0]), file_in, file_out)
+		compile_egrep_pattern(var_pattern), file_in, file_out)
 	file_out.flush()