Split help into sections

Most of the time complete help was too big for the screen

src/command.c

@@ -91,13 +91,15 @@ static struct cmd_t main_commands[] =
 {
     { "/help",
         _cmd_help,
-        { "/help [command]", "Show help summary, or help on a specific command",
+        { "/help [area|command]", "Show help summary, or help on a specific area or command",
-        { "/help [command]",
+        { "/help [area|command]",
           "---------------",
-          "List all commands with short help on what they do.",
+          "Show help options.",
+          "Specify an area (basic, status, settings, navigation) for more help on that area.",
           "Specify the command if you want more detailed help on a specific command.",
           "",
           "Example : /help connect",
+          "Example : /help settings",
           NULL } } },
 
     { "/connect",
@@ -363,6 +365,10 @@ cmd_init(void)
     log_info("Initialising commands");
     commands_ac = p_autocomplete_new();
     help_ac = p_autocomplete_new();
+    p_autocomplete_add(help_ac, strdup("basic"));
+    p_autocomplete_add(help_ac, strdup("status"));
+    p_autocomplete_add(help_ac, strdup("settings"));
+    p_autocomplete_add(help_ac, strdup("navigation"));
 
     unsigned int i;
     for (i = 0; i < ARRAY_SIZE(main_commands); i++) {
@@ -551,6 +557,14 @@ _cmd_help(const char * const inp, struct cmd_help_t help)
 {
     if (strcmp(inp, "/help") == 0) {
         cons_help();
+    } else if (strcmp(inp, "/help basic") == 0) {
+        cons_basic_help();
+    } else if (strcmp(inp, "/help status") == 0) {
+        cons_status_help();
+    } else if (strcmp(inp, "/help settings") == 0) { 
+        cons_settings_help();
+    } else if (strcmp(inp, "/help navigation") == 0) {
+        cons_navigation_help();
     } else {
         char *cmd = strndup(inp+6, strlen(inp)-6);
         char cmd_with_slash[1 + strlen(cmd) + 1];

src/ui.h

@@ -104,6 +104,10 @@ void win_remind(void);
 
 // console window actions
 void cons_help(void);
+void cons_basic_help(void);
+void cons_settings_help(void);
+void cons_status_help(void);
+void cons_navigation_help(void);
 void cons_prefs(void);
 void cons_bad_command(const char * const cmd);
 void cons_show(const char * const cmd, ...);

src/windows.c

@@ -573,11 +573,35 @@ _cons_show_basic_help(void)
 
 void
 cons_help(void)
+{
+    cons_show("");
+    cons_show("Choose an area you need help with:");
+    cons_show("");
+    cons_show("/help basic      - Basic commands, for connecting, chatting etc.");
+    cons_show("/help status     - How to change your status.");
+    cons_show("/help settings   - Commands for configuring Profanity.");
+    cons_show("/help navigation - How to navigate around Profanity.");
+    cons_show("");
+
+    if (_curr_prof_win == 0)
+        dirty = TRUE;
+}
+
+void
+cons_basic_help(void)
 {
     cons_show("");
     cons_show("Basic Commands:");
     _cons_show_basic_help();
 
+    if (_curr_prof_win == 0)
+        dirty = TRUE;
+}
+
+void
+cons_settings_help(void)
+{
+    cons_show("");
     cons_show("Settings:");
     cons_show("");
 
@@ -587,7 +611,16 @@ cons_help(void)
         cons_show("%-25s: %s", help->usage, help->short_help);
         settings_helpers = g_slist_next(settings_helpers);
     }
+    
+    cons_show("");
 
+    if (_curr_prof_win == 0)
+        dirty = TRUE;
+}
+
+void
+cons_status_help(void)
+{
     cons_show("");
     cons_show("Status changes:");
     cons_show("");
@@ -599,6 +632,15 @@ cons_help(void)
         status_helpers = g_slist_next(status_helpers);
     }
 
+    cons_show("");
+
+    if (_curr_prof_win == 0)
+        dirty = TRUE;
+}
+
+void
+cons_navigation_help(void)
+{
     cons_show("");
     cons_show("Navigation:");
     cons_show("");