test434: test -K use in a single line without newline

Closes #5946

tests/data/Makefile.inc

@@ -66,7 +66,7 @@ test393 test394 test395 test396 test397 \
 test400 test401 test402 test403 test404 test405 test406 test407 test408 \
 test409 \
 \
-test430 test431 test432 test433 \
+test430 test431 test432 test433 test434 \
 \
 test490 test491 test492 \
 \

tests/data/test434

@@ -0,0 +1,48 @@
+<testcase>
+
+<info>
+<keywords>
+--config
+</keywords>
+</info>
+
+#
+<reply>
+<data>
+HTTP/1.1 200 OK
+Content-Length: 6
+Content-Type: text/1
+
+-foo-
+</data>
+</reply>
+
+#
+<client>
+<file name="log/config434" nonewline="yes">
+url = %HOSTIP:%HTTPPORT/434
+</file>
+<server>
+http
+</server>
+<name>
+-K with a single line without newline
+</name>
+<command>
+-K log/config434
+</command>
+</client>
+
+#
+<verify>
+<strip>
+^User-Agent:.*
+</strip>
+<protocol>
+GET /434 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+
+</protocol>
+</verify>
+</testcase>