[PATCH 1/4] parse-options: introduce OPT_PATH

[Michael J Gruber <git@drmicha.warpmail.net>]

Many options are paths, but not files. Introduce OPT_PATH which does
the same path processing as OPT_FILENAME but allows to name the argument.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
---
 Documentation/technical/api-parse-options.txt | 5 +++++
 parse-options.h                               | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/Documentation/technical/api-parse-options.txt b/Documentation/technical/api-parse-options.txt
index 1f2db31..109903c 100644
--- a/Documentation/technical/api-parse-options.txt
+++ b/Documentation/technical/api-parse-options.txt
@@ -187,6 +187,11 @@ There are some macros to easily define options:
 	The filename will be prefixed by passing the filename along with
 	the prefix argument of `parse_options()` to `prefix_filename()`.
 
+`OPT_PATH(short, long, &var, arg_str, description)`::
+	Introduce an option with a path argument named arg_str.
+	The filename will be prefixed by passing the filename along with
+	the prefix argument of `parse_options()` to `prefix_filename()`.
+
 `OPT_ARGUMENT(long, description)`::
 	Introduce a long-option argument that will be kept in `argv[]`.
 
diff --git a/parse-options.h b/parse-options.h
index 7940bc7..5127a5d 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -149,6 +149,8 @@ struct option {
 	  PARSE_OPT_NOARG | PARSE_OPT_NONEG, (f) }
 #define OPT_FILENAME(s, l, v, h)    { OPTION_FILENAME, (s), (l), (v), \
 				       N_("file"), (h) }
+#define OPT_PATH(s, l, v, a, h)    { OPTION_FILENAME, (s), (l), (v), \
+				       (a), (h) }
 #define OPT_COLOR_FLAG(s, l, v, h) \
 	{ OPTION_CALLBACK, (s), (l), (v), N_("when"), (h), PARSE_OPT_OPTARG, \
 		parse_opt_color_flag_cb, (intptr_t)"always" }
-- 
2.3.0.296.g32c87e1