Merge branch 'rs/parse-opt-lithelp'

The parse-options machinery learned to refrain from enclosing
placeholder string inside a "<bra" and "ket>" pair automatically
without PARSE_OPT_LITERAL_ARGHELP.  Existing help text for option
arguments that are not formatted correctly have been identified and
fixed.

* rs/parse-opt-lithelp:
  parse-options: automatically infer PARSE_OPT_LITERAL_ARGHELP
  shortlog: correct option help for -w
  send-pack: specify --force-with-lease argument help explicitly
  pack-objects: specify --index-version argument help explicitly
  difftool: remove angular brackets from argument help
  add, update-index: fix --chmod argument help
  push: use PARSE_OPT_LITERAL_ARGHELP instead of unbalanced brackets

builtin/shortlog.c

@@ -268,8 +268,9 @@ int cmd_shortlog(int argc, const char **argv, const char *prefix)
 			 N_("Suppress commit descriptions, only provides commit count")),
 		OPT_BOOL('e', "email", &log.email,
 			 N_("Show the email address of each author")),
-		{ OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
-			N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
+		{ OPTION_CALLBACK, 'w', NULL, &log, N_("<w>[,<i1>[,<i2>]]"),
+			N_("Linewrap output"), PARSE_OPT_OPTARG,
+			&parse_wrap_args },
 		OPT_END(),
 	};