From f7db3f37895ad3a98405afdb84b42ed462542b12 Mon Sep 17 00:00:00 2001
From: Roj234 <82699138+roj234@users.noreply.github.com>
Date: Fri, 6 Mar 2026 13:41:11 +0800
Subject: [PATCH] cli : Don't clear system prompt when using '/clear' (#20067)

* Enhance /clear command to include system prompt

Add system prompt to messages when clearing chat history.

* Use lambda
---
 tools/cli/cli.cpp | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/tools/cli/cli.cpp b/tools/cli/cli.cpp
index 65ff4ac6c0..13bedf31eb 100644
--- a/tools/cli/cli.cpp
+++ b/tools/cli/cli.cpp
@@ -382,12 +382,15 @@ int main(int argc, char ** argv) {
         modalities += ", audio";
     }
 
-    if (!params.system_prompt.empty()) {
-        ctx_cli.messages.push_back({
-            {"role",    "system"},
-            {"content", params.system_prompt}
-        });
-    }
+    auto add_system_prompt = [&]() {
+        if (!params.system_prompt.empty()) {
+            ctx_cli.messages.push_back({
+                {"role",    "system"},
+                {"content", params.system_prompt}
+            });
+        }
+    };
+    add_system_prompt();
 
     console::log("\n");
     console::log("%s\n", LLAMA_ASCII_LOGO);
@@ -477,6 +480,8 @@ int main(int argc, char ** argv) {
             }
         } else if (string_starts_with(buffer, "/clear")) {
             ctx_cli.messages.clear();
+            add_system_prompt();
+
             ctx_cli.input_files.clear();
             console::log("Chat history cleared.\n");
             continue;