cpio: improve help text; document two TODOs

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

1 files changed, 8 insertions, 4 deletions

diff --git a/include/usage.h b/include/usage.h
index 8c11ac466..65836d8ce 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -560,11 +560,15 @@
      "\n        -l,-s   Create (sym)links" \
 
 #define cpio_trivial_usage \
-       "-[ti" IF_FEATURE_CPIO_O("o") IF_FEATURE_CPIO_P("p") "dmvu] [-F FILE]" \
-       IF_FEATURE_CPIO_O( " [-H newc]" )
+       "[-ti" IF_FEATURE_CPIO_O("o") "]" IF_FEATURE_CPIO_P(" [-p DIR]") \
+       " [-dmvu] [-F FILE]" IF_FEATURE_CPIO_O(" [-H newc]")
 #define cpio_full_usage "\n\n" \
        "Extract or list files from a cpio archive" \
-        IF_FEATURE_CPIO_O( ", or create a cpio archive" ) \
+        IF_FEATURE_CPIO_O(", or" \
+     "\ncreate an archive" IF_FEATURE_CPIO_P(" (-o) or copy files (-p)") \
+                " using file list on standard input" \
+        ) \
+     "\n" \
      "\nMain operation mode:" \
      "\n        -t      List" \
      "\n        -i      Extract" \
@@ -572,7 +576,7 @@
      "\n        -o      Create" \
         ) \
         IF_FEATURE_CPIO_P( \
-     "\n        -p      Passthrough" \
+     "\n        -p DIR  Copy files to DIR" \
         ) \
      "\nOptions:" \
      "\n        -d      Make leading directories" \