recollq: add option to extract result document to file + doc and test

tests/extracto/extracto.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+topdir=`dirname $0`/..
+. $topdir/shared.sh
+
+initvariables $0
+
+(
+    tmpfile=$(
+        echo 'mkstemp(template)' |
+            m4 -D template="${TMPDIR:-/tmp}/rcltsttmpXXXXXX"
+           ) || exit 1
+    trap "rm -f -- '$tmpfile'" EXIT
+    rm -f "$tmpfile"
+    recollq --extract-to "$tmpfile" -q HtmlAttachment_uniqueTerm
+    md5sum "$tmpfile" | awk '{print $1}'
+)  2> $mystderr | egrep -v '^Recoll query: ' > $mystdout
+
+diff -w ${myname}.txt $mystdout > $mydiffs 2>&1
+
+checkresult

tests/extracto/extracto.txt

@@ -0,0 +1,2 @@
+1 results
+90c700bb60b7df96e56cca46561f0597