cli: some keyword options can be supplied with no argument

We might change some notmuch command line tools that used to be
booleans into keyword arguments.

In that case, there are some legacy tools that will expect to be able
to do "notmuch foo --bar" instead of "notmuch foo --bar=baz".

This patch makes it possible to support that older API, while
providing a warning and an encouragement to upgrade.

1 files changed, 11 insertions, 1 deletions

diff --git a/test/arg-test.c b/test/arg-test.c
index 7aff8255..a218f967 100644
--- a/test/arg-test.c
+++ b/test/arg-test.c
@@ -7,13 +7,14 @@ int main(int argc, char **argv){
     int opt_index=1;
 
     int kw_val=0;
+    int kwb_val=0;
     int fl_val=0;
     int int_val=0;
     const char *pos_arg1=NULL;
     const char *pos_arg2=NULL;
     const char *string_val=NULL;
     bool bool_val = false;
-    bool fl_set = false, int_set = false, bool_set = false,
+    bool fl_set = false, int_set = false, bool_set = false, kwb_set = false,
 	kw_set = false, string_set = false, pos1_set = false, pos2_set = false;
 
     notmuch_opt_desc_t parent_options[] = {
@@ -33,6 +34,12 @@ int main(int argc, char **argv){
 				  { "one", 1 },
 				  { "two", 2 },
 				  { 0, 0 } } },
+	{ .opt_keyword = &kwb_val, .name = "boolkeyword", .present = &kwb_set,
+	  .keyword_no_arg_value = "true", .keywords =
+	  (notmuch_keyword_t []){ { "false", 0 },
+				  { "true", 1 },
+				  { "auto", 2 },
+				  { 0, 0 } } },
 	{ .opt_inherit = parent_options },
 	{ .opt_string = &string_val, .name = "string", .present = &string_set },
 	{ .opt_position = &pos_arg1, .present = &pos1_set },
@@ -51,6 +58,9 @@ int main(int argc, char **argv){
     if (kw_set)
 	printf("keyword %d\n", kw_val);
 
+    if (kwb_set)
+	printf("boolkeyword %d\n", kwb_val);
+
     if (fl_set)
 	printf("flags %d\n", fl_val);