1 files changed, 27 insertions, 7 deletions

diff --git a/src/commands.c b/src/commands.c
index 10e4eb8..b089a1c 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -28,7 +28,7 @@ Command
 solve_cmd = {
         .name        = "solve",
         .usage       = "solve STEP [OPTIONS] SCRAMBLE",
-        .description = "Solve a step",
+        .description = "Solve a step; see command steps for a list of steps",
         .parse_args  = solve_parse_args,
         .exec        = solve_exec
 };
@@ -116,6 +116,7 @@ solve_parse_args(int c, char **v)
         a->opts->min_moves     = 0;
         a->opts->max_moves     = 20;
         a->opts->max_solutions = 1;
+        a->opts->nthreads      = 1;
         a->opts->optimal_only  = false;
         a->opts->can_niss      = false;
         a->opts->verbose       = false;
@@ -127,7 +128,8 @@ solve_parse_args(int c, char **v)
                         val = strtol(v[++i], NULL, 10);
                         if (val < 0 || val > 100) {
                                 fprintf(stderr,
-                                        "Invalid min number of moves.\n");
+                                        "Invalid min number of moves"
+                                        "(0 <= m <= 100).\n");
                                 return a;
                         }
                         a->opts->min_moves = val;
@@ -135,10 +137,20 @@ solve_parse_args(int c, char **v)
                         val = strtol(v[++i], NULL, 10);
                         if (val < 0 || val > 100) {
                                 fprintf(stderr,
-                                        "Invalid max number of moves.\n");
+                                        "Invalid max number of moves"
+                                        "(0 <= M <= 100).\n");
                                 return a;
                         }
                         a->opts->max_moves = val;
+                } else if (!strcmp(v[i], "-t")) {
+                        val = strtol(v[++i], NULL, 10);
+                        if (val < 1 || val > 64) {
+                                fprintf(stderr,
+                                        "Invalid number of threads."
+                                        "1 <= t <= 64\n");
+                                return a;
+                        }
+                        a->opts->nthreads = val;
                 } else if (!strcmp(v[i], "-s")) {
                         val = strtol(v[++i], NULL, 10);
                         if (val < 1 || val > 1000000) {
@@ -255,11 +267,19 @@ print_exec(CommandArgs *args)
 static void
 help_exec(CommandArgs *args)
 {
-        /* TODO: print full nissy manpage */
         if (args->command == NULL) {
-                printf("Type help COMMAND for information on a ");
-                printf("specific command.\n");
-                printf("A more complete manual page is work in progress.\n");
+                printf(
+                       "Use the nissy command \"help COMMAND\" for a short "
+                       "description of a specific command.\n"
+                       "Use the nissy command \"commands\" for a list of "
+                       "available commands.\n"
+                       "See the manual page for more details. The manual"
+                       " page is available with \"man nissy\" on a UNIX"
+                       " system (such a Linux or MacOS) or in pdf and html"
+                       " format in the docs folder.\n"
+                       "Nissy is available for free at "
+                       "https://github.com/sebastianotronto/nissy"
+                      );
         } else {
                 printf("Command %s: %s\nusage: %s\n", args->command->name,
                        args->command->description, args->command->usage);