options: remove M_OPT_IMPLICIT_DEFAULT

This was to make an option without value use the option's default value
(e.g. --term-osd is the same as --term-osd=auto). Make it simpler by
handling this case as an empty choice.

The flag was probably needed when option handling still did ambiguous
argument parsing.

3 files changed, 8 insertions, 21 deletions

diff --git a/cfg-mplayer.h b/cfg-mplayer.h
index 04ae529e1d..d27ee323d3 100644
--- a/cfg-mplayer.h
+++ b/cfg-mplayer.h
@@ -711,9 +711,9 @@ const m_option_t mplayer_opts[]={
 
     OPT_FLAG_ON("softsleep", softsleep, 0),
 
-    OPT_CHOICE("term-osd", term_osd, M_OPT_IMPLICIT_DEFAULT,
+    OPT_CHOICE("term-osd", term_osd, 0,
                ({"force", 1},
-                {"auto", 2},
+                {"auto", 2}, {"", 2},
                 {"off", 0})),
 
     OPT_STRING("term-osd-esc", term_osd_esc, 0, OPTDEF_STR("\x1b[A\r\x1b[K")),
diff --git a/m_option.c b/m_option.c
index 583c2252c5..d2ab925a70 100644
--- a/m_option.c
+++ b/m_option.c
@@ -267,21 +267,13 @@ const struct m_option_type m_option_type_intpair = {
 static int parse_choice(const struct m_option *opt, struct bstr name,
                         struct bstr param, void *dst)
 {
-    bool allow_empty = opt->flags & M_OPT_IMPLICIT_DEFAULT;
-    int ret;
-
     struct m_opt_choice_alternatives *alt = opt->priv;
-    if (param.len == 0) {
-        if (!allow_empty)
-            return M_OPT_MISSING_PARAM;
-        ret = 0;
-    } else {
-        for ( ; alt->name; alt++)
-            if (!bstrcasecmp0(param, alt->name))
-                break;
-        ret = 1;
-    }
+    for ( ; alt->name; alt++)
+        if (!bstrcasecmp0(param, alt->name))
+            break;
     if (!alt->name) {
+        if (param.len == 0)
+            return M_OPT_MISSING_PARAM;
         mp_msg(MSGT_CFGPARSER, MSGL_ERR,
                "Invalid value for option %.*s: %.*s\n",
                BSTR_P(name), BSTR_P(param));
@@ -294,7 +286,7 @@ static int parse_choice(const struct m_option *opt, struct bstr name,
     if (dst)
         *(int *)dst = alt->value;
 
-    return ret;
+    return 1;
 }
 
 static char *print_choice(const m_option_t *opt, const void *val)
diff --git a/m_option.h b/m_option.h
index ab83027a85..f46b14281c 100644
--- a/m_option.h
+++ b/m_option.h
@@ -292,11 +292,6 @@ struct m_option {
 // The option should be set during command line pre-parsing
 #define M_OPT_PRE_PARSE         (1 << 6)
 
-// Accept an option without parameter, even if the option type normally requires
-// a parameter. The option value will be set to a default value.
-// For m_option_type_choice, the first listed choice will be used.
-#define M_OPT_IMPLICIT_DEFAULT  (1 << 7)
-
 // For options with children, add all children as top-level arguments
 // (e.g. "--parent=child=value" becomes "--parent-child=value")
 #define M_OPT_PREFIXED          (1 << 8)