ci: syntax tests spam output

Currently syntax tests outputs all the Vim commands to the console,
which is annoying for a local developer but also makes the CI output
impossible to parse and just printing all the terminal output comes with
a performance penalty.

So let's just simply redirect all output to /dev/null similar to what
the script tests do.

This can be turned off locally for someone diagnosing issues but it
should not be the default behavior to output all terminal control
sequences to output in CI.

closes: #16612

Signed-off-by: Yee Cheng Chin <ychin.git@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/syntax/Makefile b/runtime/syntax/Makefile
index cbea54ac3189bcbb22bfe55c2caea3d6aa99770c..84d6f83dea848de4de5c3d53b358998ee271458f 100644 (file)
--- a/runtime/syntax/Makefile
+++ b/runtime/syntax/Makefile
@@ -26,11 +26,12 @@ RUN_VIMTEST = VIMRUNTIME=$(VIMRUNTIME) $(VALGRIND) $(ENVVARS) ../$(VIMPROG) -f $
 # If a test succeeds a testdir/done/{name} file will be written.
 # If a test fails a testdir/failed/{name}.dump file will be written.
 # Progress and error messages can be found in "testdir/messages".
+# Comment out the "> /dev/null" part to see the in-progress Vim behaviors.
 test:
        @# the "vimcmd" file is used by the screendump utils
        @echo "../$(VIMPROG)" > testdir/vimcmd
        @echo "$(RUN_VIMTEST)" >> testdir/vimcmd
-       VIMRUNTIME=$(VIMRUNTIME) $(ENVVARS) $(VIMPROG) --clean --not-a-term $(DEBUGLOG) -u testdir/runtest.vim
+       VIMRUNTIME=$(VIMRUNTIME) $(ENVVARS) $(VIMPROG) --clean --not-a-term $(DEBUGLOG) -u testdir/runtest.vim > /dev/null 
        @rm -f testdir/Xfilter
        @# FIXME: Temporarily show the whole file to find out what goes wrong
        @#if [ -f testdir/messages ]; then tail -n 6 testdir/messages; fi