[PATCH 1/3] cli: add support for parsing multiple keyword arguments

[Jani Nikula <jani@nikula.org>]

This allows having multiple --foo=bar --foo=baz options on the command
line, with the corresponding values OR'd together.
---
 command-line-arguments.c | 6 +++++-
 command-line-arguments.h | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/command-line-arguments.c b/command-line-arguments.c
index 844d6c3d18bf..c6f7269603cb 100644
--- a/command-line-arguments.c
+++ b/command-line-arguments.c
@@ -23,7 +23,10 @@ _process_keyword_arg (const notmuch_opt_desc_t *arg_desc, char next, const char
     while (keywords->name) {
 	if (strcmp (arg_str, keywords->name) == 0) {
 	    if (arg_desc->output_var) {
-		*((int *)arg_desc->output_var) = keywords->value;
+		if (arg_desc->opt_type == NOTMUCH_OPT_KEYWORD_FLAGS)
+		    *((int *)arg_desc->output_var) |= keywords->value;
+		else
+		    *((int *)arg_desc->output_var) = keywords->value;
 	    }
 	    return TRUE;
 	}
@@ -152,6 +155,7 @@ parse_option (const char *arg,
 
 	switch (try->opt_type) {
 	case NOTMUCH_OPT_KEYWORD:
+	case NOTMUCH_OPT_KEYWORD_FLAGS:
 	    return _process_keyword_arg (try, next, value);
 	case NOTMUCH_OPT_BOOLEAN:
 	    return _process_boolean_arg (try, next, value);
diff --git a/command-line-arguments.h b/command-line-arguments.h
index de1734ad2fdb..085a4923b5fa 100644
--- a/command-line-arguments.h
+++ b/command-line-arguments.h
@@ -8,6 +8,7 @@ enum notmuch_opt_type {
     NOTMUCH_OPT_BOOLEAN,	/* --verbose              */
     NOTMUCH_OPT_INT,		/* --frob=8               */
     NOTMUCH_OPT_KEYWORD,	/* --format=raw|json|text */
+    NOTMUCH_OPT_KEYWORD_FLAGS,  /* the above with values OR'd together */
     NOTMUCH_OPT_STRING,		/* --file=/tmp/gnarf.txt  */
     NOTMUCH_OPT_POSITION	/* notmuch dump pos_arg   */
 };
-- 
2.1.0