From 96851fd522ae3540314ac5c5d4d4fbec1448ca4b Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Tue, 12 Mar 2019 00:33:57 -0400
Subject: ob_set_substvar(): Replace sed with read

---
diff --git a/lib/control.sh b/lib/control.sh
index 9e8bb71..a20ea3c 100644
--- a/lib/control.sh
+++ b/lib/control.sh
@@ -215,16 +215,9 @@ ob_set_substvar()
 	esac
 
 	# Trim leading and trailing whitespace from value.
-	# 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.
-		};
-		')"
+	read -r value <<-EOF
+		${value}
+		EOF
 
 	eval "_OB_SUBSTVAR_${name}=\"\${value}\""
 
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