[PATCH v3 7/8] parse-options: add parse_opt_unknown_cb()

From

Michael Haggerty <mhagger@alum.mit.edu>

Date

Sep 5, 2016, 09:44 UTC

Message-ID

<963d6e9bce6348af0d5a7ad1284b64e97d28a2a2.1473068229.git.mhagger@alum.mit.edu>

In-Reply-To

<cover.1473068229.git.mhagger@alum.mit.edu>

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
See the next patch for the reason I implemented this change. Let me
know if there is an easier way to do this.

 parse-options-cb.c | 12 ++++++++++++
 parse-options.h    |  1 +
 2 files changed, 13 insertions(+)

diff --git a/parse-options-cb.c b/parse-options-cb.c
index 9667bc7..b5d9209 100644
--- a/parse-options-cb.c
+++ b/parse-options-cb.c
@@ -159,6 +159,18 @@ int parse_opt_noop_cb(const struct option *opt, const char *arg, int unset)
 }
 
 /**
+ * Report that the option is unknown, so that other code can handle
+ * it. This can be used as a callback together with
+ * OPTION_LOWLEVEL_CALLBACK to allow an option to be documented in the
+ * "-h" output even if it's not being handled directly by
+ * parse_options().
+ */
+int parse_opt_unknown_cb(const struct option *opt, const char *arg, int unset)
+{
+	return -2;
+}
+
+/**
  * Recreates the command-line option in the strbuf.
  */
 static int recreate_opt(struct strbuf *sb, const struct option *opt,
diff --git a/parse-options.h b/parse-options.h
index 78f8384..dcd8a09 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -228,6 +228,7 @@ extern int parse_opt_commits(const struct option *, const char *, int);
 extern int parse_opt_tertiary(const struct option *, const char *, int);
 extern int parse_opt_string_list(const struct option *, const char *, int);
 extern int parse_opt_noop_cb(const struct option *, const char *, int);
+extern int parse_opt_unknown_cb(const struct option *, const char *, int);
 extern int parse_opt_passthru(const struct option *, const char *, int);
 extern int parse_opt_passthru_argv(const struct option *, const char *, int);
 

-- 
2.9.3