diff --git a/src/bin/initdb/initdb.c b/src/bin/initdb/initdb.c
index 3e05ac3..ca085c2 100644
--- a/src/bin/initdb/initdb.c
+++ b/src/bin/initdb/initdb.c
@@ -354,6 +354,18 @@ pg_strdup(const char *s)
 	return result;
 }
 
+static char *
+escape_quotes(const char *src)
+{
+	char *result = escape_single_quotes(src);
+	if (!result)
+	{
+		fprintf(stderr, _("%s: out of memory\n"), progname);
+		exit(1);
+	}
+	return result;
+}
+
 /*
  * make a copy of the array of lines, with token replaced by replacement
  * the first time it occurs on each line.
@@ -2415,35 +2427,6 @@ check_ok(void)
 	}
 }
 
-/*
- * Escape (by doubling) any single quotes or backslashes in given string
- *
- * Note: this is used to process both postgresql.conf entries and SQL
- * string literals.  Since postgresql.conf strings are defined to treat
- * backslashes as escapes, we have to double backslashes here.	Hence,
- * when using this for a SQL string literal, use E'' syntax.
- *
- * We do not need to worry about encoding considerations because all
- * valid backend encodings are ASCII-safe.
- */
-static char *
-escape_quotes(const char *src)
-{
-	int			len = strlen(src),
-				i,
-				j;
-	char	   *result = pg_malloc(len * 2 + 1);
-
-	for (i = 0, j = 0; i < len; i++)
-	{
-		if (SQL_STR_DOUBLE(src[i], true))
-			result[j++] = src[i];
-		result[j++] = src[i];
-	}
-	result[j] = '\0';
-	return result;
-}
-
 /* Hack to suppress a warning about %x from some versions of gcc */
 static inline size_t
 my_strftime(char *s, size_t max, const char *fmt, const struct tm * tm)
diff --git a/src/include/port.h b/src/include/port.h
index c429c77..b5a11c3 100644
--- a/src/include/port.h
+++ b/src/include/port.h
@@ -465,4 +465,7 @@ extern int	pg_check_dir(const char *dir);
 /* port/pgmkdirp.c */
 extern int	pg_mkdir_p(char *path, int omode);
 
+/* port/quotes.c */
+extern char *escape_single_quotes(const char *src);
+
 #endif   /* PG_PORT_H */
diff --git a/src/port/Makefile b/src/port/Makefile
index bace576..04253f8 100644
--- a/src/port/Makefile
+++ b/src/port/Makefile
@@ -32,7 +32,7 @@ LIBS += $(PTHREAD_LIBS)
 
 OBJS = $(LIBOBJS) chklocale.o dirmod.o erand48.o exec.o fls.o inet_net_ntop.o \
 	noblock.o path.o pgcheckdir.o pg_crc.o pgmkdirp.o pgsleep.o \
-	pgstrcasecmp.o qsort.o qsort_arg.o sprompt.o thread.o
+	pgstrcasecmp.o quotes.o qsort.o qsort_arg.o sprompt.o thread.o
 
 # foo_srv.o and foo.o are both built from foo.c, but only foo.o has -DFRONTEND
 OBJS_SRV = $(OBJS:%.o=%_srv.o)
diff --git a/src/port/quotes.c b/src/port/quotes.c
new file mode 100644
index 0000000..989fea6
--- /dev/null
+++ b/src/port/quotes.c
@@ -0,0 +1,37 @@
+#include "c.h"
+
+/*
+ * Escape (by doubling) any single quotes or backslashes in given string
+ *
+ * Note: this is used to process both postgresql.conf entries and SQL
+ * string literals.  Since postgresql.conf strings are defined to treat
+ * backslashes as escapes, we have to double backslashes here.	Hence,
+ * when using this for a SQL string literal, use E'' syntax.
+ *
+ * We do not need to worry about encoding considerations because all
+ * valid backend encodings are ASCII-safe.
+ *
+ * Returns a malloced() string that it's the responsibility of the caller
+ * to free.
+ */
+char *
+escape_single_quotes(const char *src)
+{
+	int			len = strlen(src),
+				i,
+				j;
+	char	   *result = malloc(len * 2 + 1);
+
+	if (!result)
+		return NULL;
+
+	for (i = 0, j = 0; i < len; i++)
+	{
+		if (SQL_STR_DOUBLE(src[i], true))
+			result[j++] = src[i];
+		result[j++] = src[i];
+	}
+	result[j] = '\0';
+	return result;
+}
+