options: handle terminal/logging settings eagerly

Update msg.c state immediately if a terminal or logging setting is set.
Until now, this was delayed until mp[v]_initialize() was called. When
using the client API, you could easily miss logged error messages, even
when logging was initialized early on by calling
mpv_request_log_messages().

(Properties can't be used for this either, because properties do not
work before mpv_initialize().)

4 files changed, 28 insertions, 19 deletions

diff --git a/options/m_config.c b/options/m_config.c
index 030c144dfc..c39f3ab41a 100644
--- a/options/m_config.c
+++ b/options/m_config.c
@@ -35,6 +35,7 @@
 #include "m_config.h"
 #include "options/m_option.h"
 #include "common/msg.h"
+#include "common/msg_control.h"
 
 static const union m_option_value default_value;
 
@@ -557,18 +558,23 @@ static int handle_set_opt_flags(struct m_config *config,
     return set ? 2 : 1;
 }
 
-static void handle_set_from_cmdline(struct m_config *config,
-                                    struct m_config_option *co)
+static void handle_on_set(struct m_config *config, struct m_config_option *co,
+                          int flags)
 {
-    co->is_set_from_cmdline = true;
-    // Mark aliases too
-    if (co->data) {
-        for (int n = 0; n < config->num_opts; n++) {
-            struct m_config_option *co2 = &config->opts[n];
-            if (co2->data == co->data)
-                co2->is_set_from_cmdline = true;
+    if (flags & M_SETOPT_FROM_CMDLINE) {
+        co->is_set_from_cmdline = true;
+        // Mark aliases too
+        if (co->data) {
+            for (int n = 0; n < config->num_opts; n++) {
+                struct m_config_option *co2 = &config->opts[n];
+                if (co2->data == co->data)
+                    co2->is_set_from_cmdline = true;
+            }
         }
     }
+
+    if (config->global && (co->opt->flags & M_OPT_TERM))
+        mp_msg_update_msglevels(config->global);
 }
 
 // The type data points to is as in: m_config_get_co(config, name)->opt
@@ -588,8 +594,7 @@ int m_config_set_option_raw(struct m_config *config, struct m_config_option *co,
         return r;
 
     m_option_copy(co->opt, co->data, data);
-    if (flags & M_SETOPT_FROM_CMDLINE)
-        handle_set_from_cmdline(config, co);
+    handle_on_set(config, co, flags);
     return 0;
 }
 
@@ -637,8 +642,8 @@ static int m_config_parse_option(struct m_config *config, struct bstr name,
 
     r = m_option_parse(config->log, co->opt, name, param, set ? co->data : NULL);
 
-    if (r >= 0 && set && (flags & M_SETOPT_FROM_CMDLINE))
-        handle_set_from_cmdline(config, co);
+    if (r >= 0 && set)
+        handle_on_set(config, co, flags);
 
     return r;
 }
diff --git a/options/m_config.h b/options/m_config.h
index 89f620b6d3..ed34389921 100644
--- a/options/m_config.h
+++ b/options/m_config.h
@@ -51,6 +51,7 @@ struct m_config_option {
 /** \ingroup Config */
 typedef struct m_config {
     struct mp_log *log;
+    struct mpv_global *global; // can be NULL
 
     // Registered options.
     struct m_config_option *opts; // all options, even suboptions
diff --git a/options/m_option.h b/options/m_option.h
index 17756885d9..320a9e5b99 100644
--- a/options/m_option.h
+++ b/options/m_option.h
@@ -363,6 +363,9 @@ struct m_option {
 // The option expects a file name (or a list of file names)
 #define M_OPT_FILE              (1 << 11)
 
+// Logging-related option - used to update log/terminal settings eagerly
+#define M_OPT_TERM              (1 << 12)
+
 // These are kept for compatibility with older code.
 #define CONF_MIN                M_OPT_MIN
 #define CONF_MAX                M_OPT_MAX
diff --git a/options/options.c b/options/options.c
index 45c1b0e277..21ed2f4415 100644
--- a/options/options.c
+++ b/options/options.c
@@ -113,14 +113,14 @@ const m_option_t mp_opts[] = {
 // ------------------------- common options --------------------
     OPT_FLAG("quiet", quiet, CONF_GLOBAL),
     OPT_FLAG_STORE("really-quiet", verbose, CONF_GLOBAL | CONF_PRE_PARSE, -10),
-    OPT_FLAG("terminal", use_terminal, CONF_GLOBAL | CONF_PRE_PARSE),
-    OPT_GENERAL(char**, "msg-level", msg_levels, CONF_GLOBAL|CONF_PRE_PARSE,
-                .type = &m_option_type_msglevels),
+    OPT_FLAG("terminal", use_terminal, CONF_GLOBAL | CONF_PRE_PARSE | M_OPT_TERM),
+    OPT_GENERAL(char**, "msg-level", msg_levels, CONF_GLOBAL|CONF_PRE_PARSE |
+                M_OPT_TERM, .type = &m_option_type_msglevels),
     OPT_STRING("dump-stats", dump_stats, CONF_GLOBAL | CONF_PRE_PARSE),
-    OPT_FLAG("msg-color", msg_color, CONF_GLOBAL | CONF_PRE_PARSE),
+    OPT_FLAG("msg-color", msg_color, CONF_GLOBAL | CONF_PRE_PARSE | M_OPT_TERM),
     OPT_STRING("log-file", log_file, CONF_GLOBAL | CONF_PRE_PARSE | M_OPT_FILE),
-    OPT_FLAG("msg-module", msg_module, CONF_GLOBAL),
-    OPT_FLAG("msg-time", msg_time, CONF_GLOBAL),
+    OPT_FLAG("msg-module", msg_module, CONF_GLOBAL | M_OPT_TERM),
+    OPT_FLAG("msg-time", msg_time, CONF_GLOBAL | M_OPT_TERM),
 #ifdef _WIN32
     OPT_CHOICE("priority", w32_priority, 0,
                ({"no",          0},