Add tilde_utils

tilde_utils.moo

@@ -0,0 +1,29 @@
+@create $generic_utils named "Tilde Utilities"
+@property #0.tilde_utils #170
+
+@describe $tilde_utils as "This is the Tilde Utilities utility package.  See `help $tilde_utils' for more details."
+@set $tilde_utils.help_msg to {"Mirrored functions:", "  curl (STR <url> [, INT <include_headers>, INT timeout]) -- See `help curl()`", "  exec (LIST command[, STR input][, LIST environment variables]) -- See `help eval()`"}
+
+@verb $tilde_utils:exec tnt
+@program $tilde_utils:exec
+{command, ?input=#-1, ?env_vars=#-1} = args;
+if (env_vars != #-1)
+    return exec (command, input, env_vars);
+elseif (input != #-1)
+    return exec (command, input);
+else
+    return exec (command);
+endif
+.
+
+@verb $tilde_utils:curl tnt
+@program $tilde_utils:curl
+{url, ?include_headers=#-1, ?timeout=#-1} = args;
+if (timeout != #-1)
+    return curl (url, include_headers, timeout);
+elseif (include_headers != #-1)
+    return curl (url, include_headers);
+else
+    return curl (url);
+endif
+.