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-rw-r--r-- | ruby.c | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -765,6 +765,7 @@ feature_option(const char *str, int len, void *arg, const unsigned int enable) } rb_warn("unknown argument for --%s: `%.*s'", enable ? "enable" : "disable", len, str); + rb_warn("features are [gems, did-you-mean, rubyopt, frozen-string-literal]."); } static void |