Reported by shellcheck.

	* runtest: Use $((..)) not `expr ..` and defensively double quote
	shell variables.

1 files changed, 23 insertions, 18 deletions

diff --git a/runtest b/runtest
index 15fbea2..103108d 100755
--- a/runtest
+++ b/runtest
@@ -25,7 +25,7 @@
 # Get the execution path to this script and the current directory.
 
 mypath=${0-.}
-if expr ${mypath} : '.*/.*' > /dev/null
+if expr "$mypath" : '.*/.*' > /dev/null
 then
     :
 else
@@ -33,21 +33,21 @@ else
     for dir in $PATH
     do
 	test -z "$dir" && dir=.
-	if test -x $dir/$mypath
+	if test -x "$dir/$mypath"
 	then
-	    mypath=$dir/$mypath
+	    mypath="$dir/$mypath"
 	    break
 	fi
     done
     IFS="$save_ifs"
 fi
-execpath=`echo ${mypath} | sed  -e 's@/[^/]*$@@'`
+execpath=$(echo "$mypath" | sed  -e 's@/[^/]*$@@')
 
 # Get the name by which runtest was invoked and extract the config
 # triplet.
 
-runtest=`echo ${mypath} | sed -e 's@^.*/@@'`
-target=`echo $runtest | sed -e 's/-runtest$//'`
+runtest=$(echo "$mypath" | sed -e 's@^.*/@@')
+target=$(echo "$runtest" | sed -e 's/-runtest$//')
 if [ "$target" != runtest ] ; then
     target="--target ${target}"
 else
@@ -94,7 +94,7 @@ for a in "$@" ; do
 done
 
 if expr $verbose \> 0 > /dev/null ; then
-  echo Expect binary is $expectbin
+  echo Expect binary is "$expectbin"
 fi
 
 # Find runtest.exp. First we look in its installed location,
@@ -109,14 +109,19 @@ fi
 #
 # .. which is a very weak assumption
 
-for i in `echo ${execpath} | sed  -e 's@/[^/]*$@/share/dejagnu@'` `echo ${execpath} | sed  -e 's@/[^/]*/[^/]*$@/share/dejagnu@'` $execpath /usr/share/dejagnu /usr/local/share/dejagnu ; do
-    if expr $verbose \> 1 > /dev/null ; then
-	echo Looking for $i/runtest.exp.
+for i in \
+    $(echo "$execpath" | sed  -e 's@/[^/]*$@/share/dejagnu@') \
+    $(echo "$execpath" | sed  -e 's@/[^/]*/[^/]*$@/share/dejagnu@') \
+    $execpath \
+    /usr/share/dejagnu \
+    /usr/local/share/dejagnu ; do
+    if expr "$verbose" \> 1 > /dev/null ; then
+	echo Looking for "$i"/runtest.exp.
     fi
-    if [ -f $i/runtest.exp ] ; then
+    if [ -f "$i/runtest.exp" ] ; then
 	runpath=$i
-	if expr $verbose \> 0 > /dev/null ; then
-	    echo Using $i/runtest.exp as main test driver
+	if expr "$verbose" \> 0 > /dev/null ; then
+	    echo Using "$i"/runtest.exp as main test driver
 	fi
 	break
     fi
@@ -126,8 +131,8 @@ done
 
 if [ x"$DEJAGNULIBS" != x ] ; then
     runpath=$DEJAGNULIBS
-    if expr $verbose \> 0 > /dev/null ; then
-	echo Using $DEJAGNULIBS/runtest.exp as main test driver
+    if expr "$verbose" \> 0 > /dev/null ; then
+	echo Using "$DEJAGNULIBS"/runtest.exp as main test driver
     fi
 fi
 if [ x"$runpath" = x ] ; then
@@ -135,9 +140,9 @@ if [ x"$runpath" = x ] ; then
     exit 1
 fi
 
-if ! type $expectbin >/dev/null 2>/dev/null ; then
-    echo "ERROR: unable to find expect on the PATH"
+if ! type "$expectbin" > /dev/null 2> /dev/null ; then
+    echo "ERROR: unable to find expect in the PATH"
     exit 1
 fi
 
-exec $expectbin $debug -- $runpath/runtest.exp $target ${1+"$@"}
+exec "$expectbin" "$debug" -- "$runpath/runtest.exp" "$target" ${1+"$@"}