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diff --git a/systemtest/testdata/parser/gentest.awk b/systemtest/testdata/parser/gentest.awk
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+#! /bin/gawk -f
+##
+## This AWK-script generates some example queries, when applied on "testcases",
+## as command line argument. When you need to add new test cases, edit the 
+## file "testcases". Each line in this file should be of the form:
+##  
+## filename @ query @ -- comment @ -- comment
+##
+## For example the line:
+##
+## mm.ql @ select 2- -1 from ImgCharA as a @ -- caution: -- introduces comments.
+##
+## should generate a test file named mm.ql with the folowing content:
+##
+## --  caution: -- introduces comments.
+##
+## select 2- -1 from ImgCharA as a
+##
+## The char @ is somewhat unusual for SQL and I chose it as field separator.
+
+BEGIN {FS = "@"} ; 
+
+{ 
+    for (i = 3; i < NF; i++) {
+	printf "%s\n", $i > $1
+    }
+    printf "\n" >> $1
+    printf "%s\n", $2 >> $1
+}