X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=parse-options.h;h=65bce6eafd19bfedd7d3b0b31ad81625842a7c0b;hb=4e0da76318c44436286eeeca2b711d82c1098493;hp=2558e00a7c0eb12a028f4d2e88f2a8f255716604;hpb=0ce865b134f8ccd60f6e584744144b0978a9fdf2;p=git.git

diff --git a/parse-options.h b/parse-options.h
index 2558e00a7..65bce6eaf 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -16,11 +16,47 @@ enum parse_opt_flags {
 
 enum parse_opt_option_flags {
 	PARSE_OPT_OPTARG  = 1,
+	PARSE_OPT_NOARG   = 2,
 };
 
 struct option;
 typedef int parse_opt_cb(const struct option *, const char *arg, int unset);
 
+/*
+ * `type`::
+ *   holds the type of the option, you must have an OPTION_END last in your
+ *   array.
+ *
+ * `short_name`::
+ *   the character to use as a short option name, '\0' if none.
+ *
+ * `long_name`::
+ *   the long option name, without the leading dashes, NULL if none.
+ *
+ * `value`::
+ *   stores pointers to the values to be filled.
+ *
+ * `argh`::
+ *   token to explain the kind of argument this option wants. Keep it
+ *   homogenous across the repository.
+ *
+ * `help`::
+ *   the short help associated to what the option does.
+ *   Must never be NULL (except for OPTION_END).
+ *   OPTION_GROUP uses this pointer to store the group header.
+ *
+ * `flags`::
+ *   mask of parse_opt_option_flags.
+ *   PARSE_OPT_OPTARG: says that the argument is optionnal (not for BOOLEANs)
+ *   PARSE_OPT_NOARG: says that this option takes no argument, for CALLBACKs
+ *
+ * `callback`::
+ *   pointer to the callback to use for OPTION_CALLBACK.
+ *
+ * `defval`::
+ *   default value to fill (*->value) with for PARSE_OPT_OPTARG.
+ *   CALLBACKS can use it like they want.
+ */
 struct option {
 	enum parse_opt_type type;
 	int short_name;
@@ -31,8 +67,6 @@ struct option {
 
 	int flags;
 	parse_opt_cb *callback;
-	/* holds default value for PARSE_OPT_OPTARG,
-	   though callbacks can use it like they want */
 	intptr_t defval;
 };