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-rw-r--r--common.mk2
1 files changed, 1 insertions, 1 deletions
diff --git a/common.mk b/common.mk
index 940c477c1cc..73bdaeb992a 100644
--- a/common.mk
+++ b/common.mk
@@ -1085,7 +1085,7 @@ help: PHONY
" gdb-ruby: runs test.rb by ruby under gdb" \
" check: equals make test test-all" \
" test: ruby core tests" \
- " test-all: all ruby tests [TESTS=<test files>]" \
+ " test-all: all ruby tests [TESTS=\"-j4 <test files>\"]" \
" test-rubyspec: run RubySpec test suite" \
" update-rubyspec: update local copy of RubySpec" \
" benchmark: benchmark this ruby and COMPARE_RUBY." \