diff --git a/test/t1.sh b/test/t1.sh
new file mode 100755
index 0000000..b17d61c
--- /dev/null
+++ b/test/t1.sh
@@ -0,0 +1,213 @@
+#!/bin/sh
+BN=`basename $0`
+# @setlocal
+#@REM =================================================================
+#@REM A convenient run one test giving the number and expected exit
+#@REM
+#@REM This is to run just one, like "t1 1642186-1 0"
+#@REM
+#@REM Note it uses a relative path to the built exe file, and
+#@REM expects the ouput folder has to exist.
+#@REM
+#@REM Obviously you may want to adjust this file, like seen below to test
+#@REM different versions of tidy.exe...
+#@REM Rather than altering this file, which will be flagged by git,
+#@REM I copy it to say a temp1.bat, and modify that to suit my testing
+#@REM
+#@REM There is also an 'alltest.cmd' which runs some 227 tests that 
+#@REM gets the case listed in 'testcases.txt' file.
+#@REM
+#@REM =================================================================
+
+#@REM setup the ENVIRONMENT
+TIDY="../build/cmake/tidy"
+TIDYOUT="tmp"
+TMPLOG="temptest1.txt"
+
+if [ ! -d "$TIDYOUT" ]; then
+    echo ""
+    echo "$BN: Error: Can NOT locate $TIDYOUT! This MUST be created!"
+    echo "$BN: This script does NOT create any directories..."
+    echo ""
+    exit 1
+fi
+
+if [ ! -x "$TIDY" ]; then
+    echo ""
+    echo "$BN: Error: Unable to locate file '$TIDY'! Has it been built? *** FIX ME ***"
+    echo ""
+    exit 1
+fi
+
+give_help()
+{
+    echo ""
+    echo "- Usage: $0 \"value\" \"expected exit value\""
+    echo "- That is give test number, and expected result, like"
+    echo "$0 1642186 1"
+    echo "- Missing expected value. See testcases.txt for list available..."
+    echo ""
+}
+d_now()
+{
+    date +%Y%m%d%H%M%S
+}
+
+#@REM Check user input
+TMPCASE="$1"
+TMPEXIT="$2"
+TMPNOW=`d_now`
+
+if [ -z "$TMPCASE" ]; then
+    give_help
+    exit 1
+fi    
+if [ -z "$TMPEXIT" ]; then
+    give_help
+    exit 1
+fi
+
+TMPFIL="input/in_$TMPCASE.html"
+TMPCFG="input/cfg_$TMPCASE.txt"
+if [ ! -f "$TMPCFG" ]; then
+TMPCFG="input/cfg_default.txt"
+fi
+
+if [ ! -f "$TMPFIL" ]; then
+    echo ""
+    # @dir input/*%1*
+    # @echo.
+    echo "$BN: Error: Can NOT locate $TMPFIL! Is number correct? "
+    echo ""
+    exit 1
+fi
+ 
+if [ ! -f "$TMPCFG" ]; then
+    echo ""
+    echo "$BN: Error: Can NOT locate $TMPCFG!"
+    echo ""
+    exit 1
+fi
+if [ -f "$TMPLOG" ]; then
+    rm -f $TMPLOG
+fi
+echo "$BN: Test 1 case $TMPCASE $TMPEXIT on $TMPNOW" > $TMPLOG
+echo "$BN: Version of tidy in use..." >> $TMPLOG
+./$TIDY -v >> $TMPLOG
+if [ ! "$?" = "0" ]; then
+    echo ""
+    echo "$BN: Error: Unable to run '$TIDY -v' successfully! *** FIX ME ***"
+    echo ""
+    exit 1
+fi
+
+echo ""
+echo "$BN: Doing './testone.sh $TMPCASE $TMPEXIT'"
+echo "$BN: Doing './testone.sh $TMPCASE $TMPEXIT'" >> $TMPLOG
+echo "$BN: testone.sh run '$TIDY ... -config $TMPCFG $TMPFIL'" >> $TMPLOG
+
+if [ -f "tempall.txt" ]; then
+    rm -f tempall.txt
+fi
+
+./testone.sh $TMPCASE $TMPEXIT
+if [ -f "tempall.txt" ]; then
+    echo "==========================" >> $TMPLOG
+    cat tempall.txt >> $TMPLOG
+    echo "==========================" >> $TMPLOG
+else
+    echo "Why no tempall.txt created???" >> $TMPLOG    
+fi
+
+echo "$BN: See ouput in $TMPLOG"
+echo "$BN: Checking for compare phase..." >> $TMPLOG
+
+TMPFIL1="testbase/out_$TMPCASE.html"
+TMPOUT1="testbase/msg_$TMPCASE.txt"
+TMPFIL2="$TIDYOUT/out_$TMPCASE.html"
+TMPOUT2="$TIDYOUT/msg_$TMPCASE.txt"
+
+if [ ! -f "$TMPFIL1" ]; then
+    echo ""
+    echo "$BN: NOT locate $TMPFIL1 "
+    echo "$BN: needed for the compare... but this may not be a problem..."
+    echo "$BN: Maybe there is no 'testbase' file for test $TMPCASE!"
+    echo ""
+    exit 1
+fi
+if [ ! -f "$TMPFIL2" ]; then
+    echo ""
+    echo "$BN: NOT locate $TMPFIL2 "
+    echo "$BN: needed for the compare... but this may not be a problem..."
+    echo "$BN: Maybe there is no 'testbase' file for test $TMPCASE!"
+    echo ""
+    exit 1
+fi
+
+no_file2()
+{
+    echo ""
+    echo "$BN: Can NOT locate  $TMPOUT1 or $TMPOUT2"
+    echo "$BN: needed for the compare... but this may not be a problem..."
+    echo "$BN: but it is strange one or both were not created!!! *** NEEDS CHECKING ***"
+    echo ""
+}
+
+if [ ! -f "$TMPOUT1" ]; then
+    no_file2
+    exit 1
+fi
+if [ ! -f "$TMPOUT2" ]; then
+    no_file2
+    exit 1
+fi
+
+is_diff()
+{
+    echo ""
+    echo "$BN: Check the above diff carefully. This may indicate a 'testbase', or"
+    echo "$BN: a 'regression' in tidy output."
+    echo ""
+}
+
+
+#@REM Compare the outputs, exactly
+TMPOPTS="-ua"
+ERRCNT=0
+
+echo ""
+echo "$BN: Doing: 'diff $TMPOPTS $TMPFIL1 $TMPFIL2'"
+echo "$BN: Doing: 'diff $TMPOPTS $TMPFIL1 $TMPFIL2'" >> $TMPLOG
+diff $TMPOPTS $TMPFIL1 $TMPFIL2
+if [ "$?" = "0" ]; then
+    echo "Files appear exactly the same..."
+else
+    is_diff
+    ERRCNT=`expr $ERRCNT + 1`
+fi
+
+echo ""
+echo "$BN: Doing: 'diff $TMPOPTS $TMPOUT1 $TMPOUT2'"
+echo "$BN: Doing: 'diff $TMPOPTS $TMPOUT1 $TMPOUT2'" >> $TMPLOG
+diff $TMPOPTS $TMPOUT1 $TMPOUT2
+if [ "$?" = "0" ]; then
+    echo "$BN: Files appear exactly the same..."
+else
+    is_diff
+    ERRCNT=`expr $ERRCNT + 1`
+fi
+
+echo ""
+if [ "$ERRCNT" = "0" ]; then
+    echo "$BN: Appears a successful test of $TMPCASE $TMPEXIT"
+    echo "$BN: Appears a successful test of $TMPCASE $TMPEXIT" >> $TMPLOG
+else
+    echo "$BN: Carefully REVIEW the above differences on $TMPCASE $TMPEXIT! *** ACTION REQUIRED ***"
+    echo "$BN: Carefully REVIEW the above differences on $TMPCASE $TMPEXIT! *** ACTION REQUIRED ***" >> $TMPLOG
+fi
+echo ""
+echo "# eof" >> $TMPLOG
+echo "$BN: See full ouput in $TMPLOG"
+
+# eof :END
+