The idea is to allow it (in a future commit) advance to the next argv
element to get a value
---
 command-line-arguments.c       | 37 ++++++++++++++++++++-----------------
 command-line-arguments.h       |  4 ++--
 test/T690-command-line-args.sh | 11 +++++++++++
 3 files changed, 33 insertions(+), 19 deletions(-)
 create mode 100755 test/T690-command-line-args.sh

diff --git a/command-line-arguments.c b/command-line-arguments.c
index de6b4536..72b950e9 100644
--- a/command-line-arguments.c
+++ b/command-line-arguments.c
@@ -121,18 +121,24 @@ parse_position_arg (const char *arg_str, int 
pos_arg_index,
  * parse a possible value, and assign to *output_var
  */
 
-notmuch_bool_t
-parse_option (const char *_arg, const notmuch_opt_desc_t *options)
+int
+parse_option (int argc, char **argv, const notmuch_opt_desc_t *options, int 
opt_index)
 {
+    assert(argv);
+
+    const char *_arg = argv[opt_index];
+
     assert(_arg);
     assert(options);
 
     const char *arg = _arg + 2; /* _arg starts with -- */
     const notmuch_opt_desc_t *try;
     for (try = options; try->opt_type != NOTMUCH_OPT_END; try++) {
-       if (try->opt_type == NOTMUCH_OPT_INHERIT &&
-           parse_option (_arg, try->output_var))
-           return TRUE;
+       if (try->opt_type == NOTMUCH_OPT_INHERIT) {
+           int new_index = parse_option (argc, argv, try->output_var, 
opt_index);
+           if (new_index >= 0)
+               return new_index;
+       }
 
        if (! try->name)
            continue;
@@ -158,13 +164,13 @@ parse_option (const char *_arg, const notmuch_opt_desc_t 
*options)
        switch (try->opt_type) {
        case NOTMUCH_OPT_KEYWORD:
        case NOTMUCH_OPT_KEYWORD_FLAGS:
-           return _process_keyword_arg (try, next, value);
+           return _process_keyword_arg (try, next, value) ? opt_index + 1 : 
(-1);
        case NOTMUCH_OPT_BOOLEAN:
-           return _process_boolean_arg (try, next, value);
+           return _process_boolean_arg (try, next, value) ? opt_index + 1 : 
(-1);
        case NOTMUCH_OPT_INT:
-           return _process_int_arg (try, next, value);
+           return _process_int_arg (try, next, value) ? opt_index + 1 : (-1);
        case NOTMUCH_OPT_STRING:
-           return _process_string_arg (try, next, value);
+           return _process_string_arg (try, next, value) ? opt_index + 1 : 
(-1);
        case NOTMUCH_OPT_POSITION:
        case NOTMUCH_OPT_END:
        default:
@@ -172,7 +178,7 @@ parse_option (const char *_arg, const notmuch_opt_desc_t 
*options)
            /*UNREACHED*/
        }
     }
-    return FALSE;
+    return -1;
 }
 
 /* See command-line-arguments.h for description */
@@ -194,18 +200,15 @@ parse_arguments (int argc, char **argv,
            }
 
        } else {
-
            if (strlen (argv[opt_index]) == 2)
                return opt_index+1;
 
-           more_args = parse_option (argv[opt_index], options);
-           if (more_args) {
-               opt_index++;
-           } else {
+           opt_index = parse_option (argc, argv, options, opt_index);
+           /* this is currently broken as -1 is never returned */
+           if (opt_index < 0) {
                fprintf (stderr, "Unrecognized option: %s\n", argv[opt_index]);
-               opt_index = -1;
+               more_args = FALSE;
            }
-
        }
     }
 
diff --git a/command-line-arguments.h b/command-line-arguments.h
index 309aaf2b..4c4d240e 100644
--- a/command-line-arguments.h
+++ b/command-line-arguments.h
@@ -70,8 +70,8 @@ parse_arguments (int argc, char **argv, const 
notmuch_opt_desc_t *options, int o
  * functions.
  */
 
-notmuch_bool_t
-parse_option (const char *arg, const notmuch_opt_desc_t* options);
+int
+parse_option (int argc, char **argv, const notmuch_opt_desc_t* options, int 
opt_index);
 
 notmuch_bool_t
 parse_position_arg (const char *arg,
diff --git a/test/T690-command-line-args.sh b/test/T690-command-line-args.sh
new file mode 100755
index 00000000..01592749
--- /dev/null
+++ b/test/T690-command-line-args.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+test_description="command line arguments"
+. ./test-lib.sh || exit 1
+
+NOTMUCH_NEW > /dev/null
+
+test_begin_subtest 'bad option to show'
+test_expect_code 1 'notmuch show --this-is-not-an-option'
+
+test_done
-- 
2.11.0

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