curl: add %{stderr} and %{stdout} for --write-out

Closes #3115

tests/data/Makefile.inc

@@ -166,7 +166,7 @@ test1424 test1425 test1426 test1427 \
 test1428 test1429 test1430 test1431 test1432 test1433 test1434 test1435 \
 test1436 test1437 test1438 test1439 test1440 test1441 test1442 test1443 \
 test1444 test1445 test1446 test1447 test1448 test1449 test1450 test1451 \
-test1452 test1453 test1454 test1455 test1456 \
+test1452 test1453 test1454 test1455 test1456 test1457 \
 test1500 test1501 test1502 test1503 test1504 test1505 test1506 test1507 \
 test1508 test1509 test1510 test1511 test1512 test1513 test1514 test1515 \
 test1516 test1517 \

tests/data/test1457

@@ -0,0 +1,62 @@
+<testcase>
+<info>
+<keywords>
+protocol
+--write-out
+</keywords>
+</info>
+# Server-side
+<reply>
+<data nocheck="yes">
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 9
+Connection: close
+Content-Type: text/plain
+
+testdata
+</data>
+
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+
+<name>
+Check if %{stderr} and %{stdout} switch between stdout and stderr.
+</name>
+<command>
+http://%HOSTIP:%HTTPPORT/1457 --write-out 'line1%{stderr}line2%{stdout}line3'
+</command>
+</client>
+
+# Verify data
+<verify>
+<stdout nonewline="yes">
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 9
+Connection: close
+Content-Type: text/plain
+
+testdata
+line1line3
+</stdout>
+#note: as of now <stderr> doesn't actually exist in runtests.pl
+<stderr nonewline="yes">
+line2
+</stderr>
+<protocol>
+GET /1457 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+
+</protocol>
+<strip>
+^User-Agent:.*
+</strip>
+</verify>
+</testcase>