server : fix grammar commandline args (ggml-org#21543)

AUTOMATIC1111 · web-flow · commit 5b1e6bcf4b49 · 2026-04-09T10:16:54.000+03:00
Co-authored-by: AUTOMATIC &lt;-&gt;
diff --git a/tools/server/server-task.cpp b/tools/server/server-task.cpp
@@ -384,6 +384,8 @@ task_params server_task::params_from_json_cmpl(
             throw std::runtime_error(std::string("\"json_schema\": ") + e.what());
         }
     } else {
+        params.sampling.grammar = defaults.sampling.grammar;
+
         std::string grammar_str = json_value(data, "grammar", std::string());
         if (!grammar_str.empty()) {
             // grammar_type key is set by the server when converting chat template grammars

Original file line number	Diff line number	Diff line change
`@@ -384,6 +384,8 @@ task_params server_task::params_from_json_cmpl(`
`384`	`384`	`throw std::runtime_error(std::string("\"json_schema\": ") + e.what());`
`385`	`385`	`}`
`386`	`386`	`} else {`
	`387`	`+ params.sampling.grammar = defaults.sampling.grammar;`
	`388`	`+`
`387`	`389`	`std::string grammar_str = json_value(data, "grammar", std::string());`
`388`	`390`	`if (!grammar_str.empty()) {`
`389`	`391`	`// grammar_type key is set by the server when converting chat template grammars`