modernize

cmd/cmd.go

@@ -11,6 +11,7 @@ import (
 	"fmt"
 	"io"
 	"log"
+	"maps"
 	"math"
 	"net"
 	"net/http"
@@ -1204,9 +1205,7 @@ func (r runOptions) Copy() runOptions {
 	var opts map[string]any
 	if r.Options != nil {
 		opts = make(map[string]any, len(r.Options))
-		for k, v := range r.Options {
-			opts[k] = v
-		}
+		maps.Copy(opts, r.Options)
 	}
 
 	var think *api.ThinkValue
@@ -1952,13 +1951,13 @@ func inferThinkingOption(caps *[]model.Capability, runOpts *runOptions, explicit
 }
 
 func renderToolCalls(toolCalls []api.ToolCall, plainText bool) string {
-	out := ""
+	var sb strings.Builder
 	formatExplanation := ""
 	formatValues := ""
 	if !plainText {
 		formatExplanation = readline.ColorGrey + readline.ColorBold
 		formatValues = readline.ColorDefault
-		out += formatExplanation
+		sb.WriteString(formatExplanation)
 	}
 	for i, toolCall := range toolCalls {
 		argsAsJSON, err := json.Marshal(toolCall.Function.Arguments)
@@ -1966,13 +1965,13 @@ func renderToolCalls(toolCalls []api.ToolCall, plainText bool) string {
 			return ""
 		}
 		if i > 0 {
-			out += "\n"
+			sb.WriteString("\n")
 		}
 		// all tool calls are unexpected since we don't currently support registering any in the CLI
-		out += fmt.Sprintf("  Model called a non-existent function '%s()' with arguments: %s", formatValues+toolCall.Function.Name+formatExplanation, formatValues+string(argsAsJSON)+formatExplanation)
+		fmt.Fprintf(&sb, "  Model called a non-existent function '%s()' with arguments: %s", formatValues+toolCall.Function.Name+formatExplanation, formatValues+string(argsAsJSON)+formatExplanation)
 	}
 	if !plainText {
-		out += readline.ColorDefault
+		sb.WriteString(readline.ColorDefault)
 	}
-	return out
+	return sb.String()
 }