Add mute feature

This will make tio go fully silent and not print anything.

src/bash-completion/tio.in

@@ -35,6 +35,7 @@ _tio()
              --rs-485 \
              --rs-485-config \
              --alert \
+             --mute \
           -v --version \
           -h --help"
 
@@ -141,6 +142,10 @@ _tio()
             COMPREPLY=( $(compgen -W "none bell blink"  -- ${cur}) )
             return 0
             ;;
+        --mute)
+            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+            return 0
+            ;;
         -v | --version)
             COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
             return 0

src/configfile.c

@@ -302,6 +302,17 @@ static int data_handler(void *user, const char *section, const char *name,
         {
             option.alert = alert_option_parse(value);
         }
+        else if (!strcmp(name, "mute"))
+        {
+            if (!strcmp(value, "enable"))
+            {
+                option.mute = true;
+            }
+            else if (!strcmp(value, "disable"))
+            {
+                option.mute = false;
+            }
+        }
     }
 
     return 0;

src/options.c

@@ -51,6 +51,7 @@ enum opt_t
     OPT_RS485_CONFIG,
     OPT_ALERT,
     OPT_COMPLETE_SUB_CONFIGS,
+    OPT_MUTE,
 };
 
 /* Default options */
@@ -127,6 +128,7 @@ void print_help(char *argv[])
     printf("      --rs-485                           Enable RS-485 mode\n");
     printf("      --rs-485-config <config>           Set RS-485 configuration\n");
     printf("      --alert bell|blink|none            Alert on connect/disconnect (default: none)\n");
+    printf("      --mute                             Mute tio\n");
     printf("  -v, --version                          Display version\n");
     printf("  -h, --help                             Display help\n");
     printf("\n");
@@ -258,6 +260,7 @@ void options_parse(int argc, char *argv[])
             {"rs-485",               no_argument,       0, OPT_RS485               },
             {"rs-485-config",        required_argument, 0, OPT_RS485_CONFIG        },
             {"alert",                required_argument, 0, OPT_ALERT               },
+            {"mute",                 no_argument,       0, OPT_MUTE                },
             {"version",              no_argument,       0, 'v'                     },
             {"help",                 no_argument,       0, 'h'                     },
             {"complete-sub-configs", no_argument,       0, OPT_COMPLETE_SUB_CONFIGS},
@@ -413,6 +416,10 @@ void options_parse(int argc, char *argv[])
                 option.alert = alert_option_parse(optarg);
                 break;
 
+            case OPT_MUTE:
+                option.mute = true;
+                break;
+
             case 'v':
                 printf("tio v%s\n", VERSION);
                 exit(EXIT_SUCCESS);