diff --git a/install-sh b/install-sh
index e9de238..11870f1 100755
--- a/install-sh
+++ b/install-sh
@@ -109,7 +109,7 @@
 	echo "install:	no input file specified"
 	exit 1
 else
-	true
+	:
 fi
 
 if [ x"$dir_arg" != x ]; then
@@ -120,7 +120,7 @@
 		instcmd=:
 		chmodcmd=""
 	else
-		instcmd=mkdir
+		instcmd=$mkdirprog
 	fi
 else
 
@@ -128,9 +128,9 @@
 # might cause directories to be created, which would be especially bad 
 # if $src (and thus $dsttmp) contains '*'.
 
-	if [ -f $src -o -d $src ]
+	if [ -f "$src" ] || [ -d "$src" ]
 	then
-		true
+		:
 	else
 		echo "install:  $src does not exist"
 		exit 1
@@ -141,7 +141,7 @@
 		echo "install:	no destination specified"
 		exit 1
 	else
-		true
+		:
 	fi
 
 # If destination is a directory, append the input filename; if your system
@@ -151,7 +151,7 @@
 	then
 		dst="$dst"/`basename $src`
 	else
-		true
+		:
 	fi
 fi
 
@@ -163,8 +163,8 @@
 
 # Skip lots of stat calls in the usual case.
 if [ ! -d "$dstdir" ]; then
-defaultIFS='	
-'
+defaultIFS='
+	'
 IFS="${IFS-${defaultIFS}}"
 
 oIFS="${IFS}"
@@ -183,7 +183,7 @@
         then
 		$mkdirprog "${pathcomp}"
 	else
-		true
+		:
 	fi
 
 	pathcomp="${pathcomp}/"
@@ -194,10 +194,10 @@
 then
 	$doit $instcmd $dst &&
 
-	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
-	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
-	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
-	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else : ; fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else : ; fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else : ; fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else : ; fi
 else
 
 # If we're going to rename the final executable, determine the name now.
@@ -216,7 +216,7 @@
 	then
 		dstfile=`basename $dst`
 	else
-		true
+		:
 	fi
 
 # Make a temp file name in the proper directory.
@@ -235,10 +235,10 @@
 # ignore errors from any of these, just make sure not to ignore
 # errors from the above "$doit $instcmd $src $dsttmp" command.
 
-	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
-	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
-	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
-	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else :;fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else :;fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else :;fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else :;fi &&
 
 # Now rename the file to the real destination.