usage: do not print trailing space for commands which have no arguments

function                                             old     new   delta
bb_show_usage                                        120     130     +10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 769b7881c..f155d0908 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -169,8 +169,11 @@ void FAST_FUNC bb_show_usage(void)
                 else {
                         full_write2_str("\nUsage: ");
                         full_write2_str(applet_name);
-                        full_write2_str(" ");
-                        full_write2_str(p);
+                        if (p[0]) {
+                                if (p[0] != '\n')
+                                        full_write2_str(" ");
+                                full_write2_str(p);
+                        }
                         full_write2_str("\n");
                 }
                 if (ENABLE_FEATURE_CLEAN_UP)