cleanup patch usage

diff --git a/include/usage.h b/include/usage.h
index 4aed166..9d89093 100644 (file)
--- a/include/usage.h
+++ b/include/usage.h
@@ -2205,12 +2205,12 @@ USE_FEATURE_MDEV_CONFIG( \
        "\t-u\tUnlocks (re-enables) the specified user account"
 
 #define patch_trivial_usage \
-       "[-p<num>] [-i<patch.diff>]"
+       "[-p<num>] [-i <diff>]"
 #define patch_full_usage \
-       "[-p<num>]\n" \
-       "[-i<diff>]"
+       "\t-p <num>\tStrip <num> leading components from file names\n" \
+       "\t-i <diff>\tRead <diff> instead of stdin"
 #define patch_example_usage \
-       "$ patch -p1 <example.diff\n" \
+       "$ patch -p1 < example.diff\n" \
        "$ patch -p0 -i example.diff"
 
 #if ENABLE_FEATURE_PIDOF_SINGLE