properly align usage message of crypto.py

diff --git a/deltatar/crypto.py b/deltatar/crypto.py
index bd87763..e49574f 100755 (executable)
--- a/deltatar/crypto.py
+++ b/deltatar/crypto.py
@@ -1509,11 +1509,12 @@ def usage (err=False):
     out = print
     if err is True:
         out = noise
+    indent = ' ' * len (SELF)
     out ("usage: %s SUBCOMMAND { --help" % SELF)
-    out ("                     | [ -v ] { -p PASSWORD | -k KEY }")
-    out ("                       { { -i | --in }  { - | SOURCE } }")
-    out ("                       { { -o | --out } { - | DESTINATION } }")
-    out ("                       { -D | --no-decrypt } { -S | --split }")
+    out ("       %s            | [ -v ] { -p PASSWORD | -k KEY }" % indent)
+    out ("       %s              { { -i | --in }  { - | SOURCE } }" % indent)
+    out ("       %s              { { -o | --out } { - | DESTINATION } }" % indent)
+    out ("       %s              { -D | --no-decrypt } { -S | --split }" % indent)
     out ("")
     out ("\twhere")
     out ("\t\tSUBCOMMAND      main mode: { process | scrypt }")