From 70015c9c5f6b2dd22f83622bba25d64c6ee32510 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Wed, 09 Oct 2013 16:40:20 -0400
Subject: build: Make [ commands more safe and consistent.

---
diff --git a/build b/build
index 0fe2c04..34bcdf5 100755
--- a/build
+++ b/build
@@ -44,12 +44,12 @@ install: build
 			fi; \
 			rm -f "$${p}.data/usr/share/zoneinfo/$${src}"; \
 			link="$${src}" up=''; \
-			while [ "$${link#*/}" != "$${link}" ] && \
-			      [ "$${link%%/*}" = "$${dest%%/*}" ]; do \
+			while [ x"$${link#*/}" != x"$${link}" ] && \
+			      [ x"$${link%%/*}" = x"$${dest%%/*}" ]; do \
 				link="$${link#*/}"; \
 				dest="$${dest#*/}"; \
 			done; \
-			while [ "$${link#*/}" != "$${link}" ]; do \
+			while [ x"$${link#*/}" != x"$${link}" ]; do \
 				link="$${link#*/}"; \
 				up="../$${up}"; \
 			done; \
@@ -68,12 +68,12 @@ install: build
 				$(tables))"; \
 		fi; \
 		link="$${src}" up=''; \
-		while [ "$${link#*/}" != "$${link}" ] && \
-		      [ "$${link%%/*}" = "$${dest%%/*}" ]; do \
+		while [ x"$${link#*/}" != x"$${link}" ] && \
+		      [ x"$${link%%/*}" = x"$${dest%%/*}" ]; do \
 			link="$${link#*/}"; \
 			dest="$${dest#*/}"; \
 		done; \
-		while [ "$${link#*/}" != "$${link}" ]; do \
+		while [ x"$${link#*/}" != x"$${link}" ]; do \
 			link="$${link#*/}"; \
 			up="../$${up}"; \
 		done; \
--
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