add --spm-infill option

Author: CISC

common/common.cpp

@@ -1285,6 +1285,10 @@ bool gpt_params_find_arg(int argc, char ** argv, const std::string & arg, gpt_pa
         params.input_suffix = argv[i];
         return true;
     }
+    if (arg == "--spm-infill") {
+        params.spm_infill = true;
+        return true;
+    }
     if (arg == "--grammar") {
         if (++i >= argc) {
             invalid_param = true;
@@ -1781,6 +1785,8 @@ void gpt_params_print_usage(int /*argc*/, char ** argv, const gpt_params & param
     options.push_back({ "main infill", "       --in-prefix-bos",        "prefix BOS to user inputs, preceding the `--in-prefix` string" });
     options.push_back({ "main infill", "       --in-prefix STRING",     "string to prefix user inputs with (default: empty)" });
     options.push_back({ "main infill", "       --in-suffix STRING",     "string to suffix after user inputs with (default: empty)" });
+    options.push_back({ "server infill",
+                                       "       --spm-infill",           "use Suffix/Prefix/Middle pattern for infill (instead of Prefix/Suffix/Middle) as some models prefer this. (default: %s)", params.spm_infill ? "enabled" : "disabled" });
 
     options.push_back({ "sampling" });
     options.push_back({ "*",           "       --samplers SAMPLERS",    "samplers that will be used for generation in the order, separated by \';\'\n"

common/common.h

@@ -240,6 +240,8 @@ struct gpt_params {
     std::string cvector_completions_file = "examples/cvector-generator/completions.txt";
     std::string cvector_positive_file    = "examples/cvector-generator/positive.txt";
     std::string cvector_negative_file    = "examples/cvector-generator/negative.txt";
+
+    bool spm_infill = false; // suffix/prefix/middle pattern for infill
 };
 
 void gpt_params_handle_model_default(gpt_params & params);