parse-options: clarify the limitations of PARSE_OPT_NODASH

Update the comment documenting 'struct option' to clarify that
PARSE_OPT_NODASH can only be an argumentless short option; see
51a9949eda (parseopt: add PARSE_OPT_NODASH, 2009-05-07).

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/parse-options.h b/parse-options.h
index 591df641916b82511689ab0cc746855450a803e5..8cbfc7e8bff1f2ac855415d1d53147b05cefe131 100644 (file)
--- a/parse-options.h
+++ b/parse-options.h
@@ -109,7 +109,8 @@ typedef enum parse_opt_result parse_opt_ll_cb(struct parse_opt_ctx_t *ctx,
  *                             is last on the command line. If the option is
  *                             not last it will require an argument.
  *                             Should not be used with PARSE_OPT_OPTARG.
- *   PARSE_OPT_NODASH: this option doesn't start with a dash.
+ *   PARSE_OPT_NODASH: this option doesn't start with a dash; can only be a
+ *                    short option and can't accept arguments.
  *   PARSE_OPT_LITERAL_ARGHELP: says that argh shouldn't be enclosed in brackets
  *                             (i.e. '<argh>') in the help message.
  *                             Useful for options with multiple parameters.