Revert "ob_set_substvar(): Replace sed with read"

This reverts commit 96851fd522ae3540314ac5c5d4d4fbec1448ca4b.

1 files changed, 10 insertions, 3 deletions

diff --git a/lib/control.sh b/lib/control.sh
index b388705..78951bb 100644
--- a/lib/control.sh
+++ b/lib/control.sh
@@ -201,9 +201,16 @@ ob_set_substvar()
 		)"
 
 	# Trim leading and trailing whitespace from value.
-	read -r value <<-EOF
-		${value}
-		EOF
+	# TODO: "read" can probably do this more simply.
+	value="$(echo "${value}" | sed -n '
+		H;             # Store each input line in the hold space.
+		${             # At the last line of input:
+		  g;           # restore the hold space into the pattern space,
+		  s/^[\n]*//;  # remove leading newline characters,
+		  s/[\n]*$//;  # remove trailing newline characters, and
+		  p;           # print the results.
+		};
+		')"
 
 	eval "_OB_SUBSTVAR_${name}=\"\${value}\""