various: sync shown track flags

Show the same flags in loadfile.c, select.lua and stats.lua. The only
differences are that only stats.lua prints albumart because it's
supposed to show detailed track information, and select.lua prints the
image flag because pressing g-v doesn't show Video or Image like in
loadfile.c and stats.lua.

player/loadfile.c

@@ -308,12 +308,12 @@ static void print_stream(struct MPContext *mpctx, struct track *t, bool indent)
         ADD_FLAG(b, "default", first);
     if (t->forced_track)
         ADD_FLAG(b, "forced", first);
-    if (t->attached_picture)
-        ADD_FLAG(b, "picture", first);
+    if (t->dependent_track)
+        ADD_FLAG(b, "dependent", first);
     if (t->visual_impaired_track)
-        ADD_FLAG(b, "visual_impaired", first);
+        ADD_FLAG(b, "visual-impaired", first);
     if (t->hearing_impaired_track)
-        ADD_FLAG(b, "hearing_impaired", first);
+        ADD_FLAG(b, "hearing-impaired", first);
     if (t->is_external)
         ADD_FLAG(b, "external", first);
     if (!first)

player/lua/select.lua

@@ -62,6 +62,25 @@ mp.add_forced_key_binding(nil, "select-playlist", function ()
     })
 end)
 
+local function format_flags(track)
+    local flags = ""
+
+    for _, flag in ipairs({
+        "default", "forced", "dependent", "visual-impaired", "hearing-impaired",
+        "image", "external"
+    }) do
+        if track[flag] then
+            flags = flags .. flag .. " "
+        end
+    end
+
+    if flags == "" then
+        return ""
+    end
+
+    return " [" .. flags:sub(1, -2) .. "]"
+end
+
 local function format_track(track)
     return (track.selected and "●" or "○") ..
         (track.title and " " .. track.title or "") ..
@@ -80,7 +99,7 @@ local function format_track(track)
             (track["demux-samplerate"] and track["demux-samplerate"] / 1000 ..
              " kHz " or "") ..
             (track["hls-bitrate"] and track["hls-bitrate"] .. " kbps " or "")
-        ):sub(1, -2) .. ")"
+        ):sub(1, -2) .. ")" .. format_flags(track)
 end
 
 mp.add_forced_key_binding(nil, "select-track", function ()

player/lua/stats.lua

@@ -1226,8 +1226,8 @@ local function add_track(c, t, i)
     append(c, t["ff-index"], {prefix="FFmpeg Index:", nl="", indent=o.prefix_sep .. o.prefix_sep})
     append(c, t["external-filename"], {prefix="File:"})
     append(c, "", {prefix="Flags:"})
-    local flags = {"default", "forced", "external", "dependent",
-                   "hearing-impaired", "visual-impaired", "image", "albumart"}
+    local flags = {"default", "forced", "dependent", "visual-impaired",
+                   "hearing-impaired", "albumart", "external"}
     local any = false
     for _, flag in ipairs(flags) do
         if t[flag] then