diff -ur dash-0.5.9.1.orig/src/mystring.c dash-0.5.9.1/src/mystring.c
--- dash-0.5.9.1.orig/src/mystring.c	2017-03-18 05:23:28.000000000 +0100
+++ dash-0.5.9.1/src/mystring.c	2017-03-18 05:20:51.000000000 +0100
@@ -182,22 +182,6 @@
 	return 1;
 }
 
-/*
- * Check if a string is identical to a shell keyword (reserved word).
- */
-
-int
-is_kwd(const char *s)
-{
-	int i = 0;
-
-	do {
-		if (strcmp(s, parsekwd[i++]) == 0)
-			return 1;
-	} while (*parsekwd[i-1] != '}');  /* assuming that "}" is last entry */
-	
-	return 0;
-}
 	
 
 /*
@@ -213,7 +197,7 @@
 single_quote(const char *s, int conditional) {
 	char *p;
 
-	if (conditional && *s != '\0' && s[strspn(s, SHELLSAFECHARS)] == '\0' && ! is_kwd(s))
+	if (conditional && *s != '\0' && s[strspn(s, SHELLSAFECHARS)] == '\0' && ! findkwd(s))
 		return (char *)s;
 
 	STARTSTACKSTR(p);