diff --git a/sh/core/code.awk b/sh/core/code.awk
index ca712ae..e7cc470 100644
--- a/sh/core/code.awk
+++ b/sh/core/code.awk
@@ -64,6 +64,11 @@ function remove_first(string, target, tmp) {
 	return trim(tmp)
 }
 
+function strip_value(string, tmp) {
+	split(string, tmp, "=")
+	return trim(tmp[1])
+}
+
 function trim(string) {
 	text = string
 	sub("^[\t ]*", "", text)
@@ -121,6 +126,16 @@ function parse(string) {
 		current_match = "shebang"
 		shebang = remove_first(string, "#!")
 
+	# constant
+	} else if (match(string, re["constant"])) {
+		current_match = "constant"
+		constant = strip_value(string)
+
+	# variable
+	} else if (match(string, re["variable"])) {
+		current_match = "variable"
+		variable = strip_value(string)
+
 	# alias
 	} else if (match(string, re["alias"])) {
 		current_match = "alias"
@@ -159,20 +174,21 @@ if (action == "doc") {
 		} else {
 			doc_append(extract($0, "doc"))
 		}
-	# set
-	} else if (match($0, re["constant"])) {
-		matched = extract($0, "constant")
-		if (matched == target) {
-			doc_output(matched, "constant")
+	# constant
+	} else if (current_match == "constant") {
+		if (constant == target) {
+			doc_output(constant, "constant")
 		} else {
 			doc_reset()
+			constant = ""
 		}
-	} else if (match($0, re["variable"])) {
-		matched = extract($0, "variable")
-		if (matched == target) {
-			doc_output(matched, "variable")
+	# variable
+	} else if (current_match == "variable") {
+		if (variable == target) {
+			doc_output(variable, "variable")
 		} else {
 			doc_reset()
+			variable = ""
 		}
 	# others
 	} else if (match($0, re["function"])) {