diff --git a/src/generate.c b/src/generate.c
index caba446..ea937d7 100644
--- a/src/generate.c
+++ b/src/generate.c
@@ -739,6 +739,12 @@ int generate_box(sentry_t *thebox)
     int rc;
     int i;
 
+    if (is_debug_logging(MAIN)) {
+        for (i = 0; i < NUM_SHAPES; i++) {
+            debug_print_shape(opt.design->shape + i);
+        }
+    }
+
     rc = horiz_generate(&(thebox[0]), &(thebox[2]));
     if (rc) {
         goto err;
diff --git a/src/shape.c b/src/shape.c
index d10225c..817819c 100644
--- a/src/shape.c
+++ b/src/shape.c
@@ -468,8 +468,9 @@ void debug_print_shape(sentry_t *shape)
             log_debug(__FILE__, MAIN, "NULL\n");
             return;
         }
-        log_debug(__FILE__, MAIN, "Shape %3s (%dx%d): elastic=%s, bl=",
-            shape_name[shape->name], (int) shape->width, (int) shape->height, shape->elastic ? "true" : "false");
+        log_debug(__FILE__, MAIN, "Shape %3s (%dx%d): elastic=%s,%s bl=",
+            shape_name[shape->name], (int) shape->width, (int) shape->height,
+            shape->elastic ? "true" : "false", shape->elastic ? " " : "");
         if (shape->blank_leftward == NULL) {
             log_debug_cont(MAIN, "NULL");
         }
diff --git a/test/192_logging1.txt b/test/192_logging1.txt
new file mode 100644
index 0000000..691db4f
--- /dev/null
+++ b/test/192_logging1.txt
@@ -0,0 +1,22 @@
+:DESC
+Test case which checks some logging features.
+
+:ARGS
+-d dog -x debug:all
+:INPUT
+foo
+:OUTPUT-FILTER
+:EXPECTED discard-stderr
+          __   _,--="=--,_   __
+         /  \."    .-.    "./  \
+        /  ,/  _   : :   _  \/` \
+        \  `| /o\  :_:  /o\ |\__/
+         `-'| :="~` _ `~"=: |
+            \`     (_)     `/ jgs
+     .-"-.   \      |      /   .-"-.
+.---{     }--|  /,.-'-.,\  |--{     }---.
+ )  (_)_)_)  \_/`~-===-~`\_/  (_(_(_)  (
+(  foo                                  )
+ )                                     (
+'---------------------------------------'
+:EOF
diff --git a/test/193_logging2.txt b/test/193_logging2.txt
new file mode 100644
index 0000000..350e4a6
--- /dev/null
+++ b/test/193_logging2.txt
@@ -0,0 +1,13 @@
+:DESC
+Test case which checks some logging features.
+
+:ARGS
+-d headline -x debug:main,regexp,parser,lexer,DISCOVERY
+:INPUT
+Hello World!
+:OUTPUT-FILTER
+:EXPECTED discard-stderr
+/*****************************/
+/*  H e l l o   W o r l d !  */
+/*****************************/
+:EOF
diff --git a/test/194_logging_with_parent_configs.txt b/test/194_logging_with_parent_configs.txt
new file mode 100644
index 0000000..efd1b81
--- /dev/null
+++ b/test/194_logging_with_parent_configs.txt
@@ -0,0 +1,13 @@
+:DESC
+Test case 130 with logging turned on.
+
+:ARGS
+-f 130_data/B.cfg -d designA -p l1 -a vc -x debug:all
+:INPUT
+foo
+:OUTPUT-FILTER
+:EXPECTED discard-stderr
+AAA
+AAA foo
+AAA
+:EOF
diff --git a/test/testrunner.sh b/test/testrunner.sh
index b2750ef..ea6dc6b 100755
--- a/test/testrunner.sh
+++ b/test/testrunner.sh
@@ -232,6 +232,9 @@ function arrange_test_fixtures()
     if [ $(grep -c "^:EXPECTED-ERROR " ${opt_testCase}) -eq 1 ]; then
         expectedReturnCode=$(grep "^:EXPECTED-ERROR " "${opt_testCase}" | sed -e 's/:EXPECTED-ERROR //')
     fi
+    if [ $(grep -c "^:EXPECTED discard-stderr" ${opt_testCase}) -eq 1 ]; then
+        discardStderr=true
+    fi
 
     cat "${opt_testCase}" | sed -n '/^:INPUT/,/^:OUTPUT-FILTER/p;' | sed '1d;$d' | tr -d '\r' > "${testInputFile}"
     cat "${opt_testCase}" | sed -n '/^:OUTPUT-FILTER/,/^:EXPECTED\b.*$/p;' | sed '1d;$d' | tr -d '\r' > "${testFilterFile}"
@@ -248,9 +251,17 @@ function run_boxes()
 
     echo "    Invoking: $(basename $boxesBinary) $boxesArgs"
     if [ -z "${BOXES_TEST_XXD:-}" ]; then
-        eval "$boxesBinary $boxesArgs" < "$testInputFile" > "$testOutputFile" 2>&1
+        if [ ${discardStderr} == true ]; then
+            eval "$boxesBinary $boxesArgs" < "$testInputFile" > "$testOutputFile" 2> "$testErrorFile"
+        else
+            eval "$boxesBinary $boxesArgs" < "$testInputFile" > "$testOutputFile" 2>&1
+        fi
     else
-        eval "$boxesBinary $boxesArgs" < "$testInputFile" | xxd > "$testOutputFile" 2>&1
+        if [ ${discardStderr} == true ]; then
+            eval "$boxesBinary $boxesArgs" < "$testInputFile" | xxd > "$testOutputFile" 2> "$testErrorFile"
+        else
+            eval "$boxesBinary $boxesArgs" < "$testInputFile" | xxd > "$testOutputFile" 2>&1
+        fi
     fi
     actualReturnCode=$?
 }
@@ -311,7 +322,9 @@ declare -r testInputFile=${opt_testCase/%.txt/.input.tmp}
 declare -r testExpectationFile=${opt_testCase/%.txt/.expected.tmp}
 declare -r testFilterFile=${opt_testCase/%.txt/.sed.tmp}
 declare -r testOutputFile=${opt_testCase/%.txt/.out.tmp}
+declare -r testErrorFile=${opt_testCase/%.txt/.err.tmp}
 declare -r boxesArgs=$(sed -n '/^:ARGS/,+1p' < "${opt_testCase}" | grep -v ^:INPUT | sed '1d' | tr -d '\r')
+declare discardStderr=false
 
 arrange_environment
 arrange_test_fixtures
@@ -328,6 +341,7 @@ rm "${testInputFile}"
 rm "${testFilterFile}"
 rm "${testExpectationFile}"
 rm "${testOutputFile}"
+rm -f "${testErrorFile}"
 
 echo "    OK"
 exit 0