mktemp: make argument optional (coreutil 6.12 compat)

function                                             old     new   delta
mktemp_main                                          157     174     +17
packed_usage                                       24508   24504      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 17/-4)              Total: 13 bytes

1 files changed, 5 insertions, 6 deletions

diff --git a/include/usage.h b/include/usage.h
index 2e5321306..f9a831e85 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2542,19 +2542,18 @@
 #endif
 
 #define mktemp_trivial_usage \
-       "[-dt] [-p DIR] TEMPLATE"
+       "[-dt] [-p DIR] [TEMPLATE]"
 #define mktemp_full_usage "\n\n" \
-       "Create a temporary file with its name based on TEMPLATE.\n" \
-       "TEMPLATE is any name with six 'Xs' (i.e., /tmp/temp.XXXXXX).\n" \
+       "Create a temporary file with name based on TEMPLATE and print its name.\n" \
+       "TEMPLATE must end with XXXXXX (i.e., /tmp/temp.XXXXXX).\n" \
      "\nOptions:" \
      "\n        -d      Make a directory instead of a file" \
 /*   "\n        -q      Fail silently if an error occurs" - we ignore it */ \
      "\n        -t      Generate a path rooted in temporary directory" \
      "\n        -p DIR  Use DIR as a temporary directory (implies -t)" \
      "\n" \
-     "\n" \
-       "For -t or -p, directory is chosen as follows:\n" \
-       "$TMPDIR if set, else -p DIR, else /tmp" \
+     "\nFor -t or -p, directory is chosen as follows:" \
+     "\n$TMPDIR if set, else -p DIR, else /tmp" \
 
 #define mktemp_example_usage \
        "$ mktemp /tmp/temp.XXXXXX\n" \