Fix json quotation bug.

main.go

@@ -2,6 +2,7 @@
 package main
 
 import (
+	"bufio"
 	"bytes"
 	"encoding/json"
 	"fmt"
@@ -235,15 +236,32 @@ func (c *KVSClient) handleGet(args []string) {
 }
 
 func (c *KVSClient) handlePut(args []string) {
-	if len(args) < 2 {
+	if len(args) < 1 {
 		fmt.Println(red("Usage: put <key> <json-data>"))
+		fmt.Println("Or: put <key> (then paste JSON on next line)")
 		return
 	}
 
+	var jsonStr string
+	if len(args) == 1 {
+		// Multiline mode - read from next input
+		fmt.Println(yellow("Enter JSON (Ctrl+D when done):"))
+		scanner := bufio.NewScanner(os.Stdin)
+		var lines []string
+		for scanner.Scan() {
+			lines = append(lines, scanner.Text())
+		}
+		jsonStr = strings.Join(lines, "\n")
+	} else {
+		// Single line mode
+		jsonStr = strings.Join(args[1:], " ")
+	}
+
 	// Parse JSON data
 	var data json.RawMessage
-	if err := json.Unmarshal([]byte(args[1]), &data); err != nil {
+	if err := json.Unmarshal([]byte(jsonStr), &data); err != nil {
 		fmt.Println(red("Invalid JSON:"), err)
+		fmt.Println("Tip: Use proper JSON format with escaped quotes")
 		return
 	}
 
@@ -527,25 +545,35 @@ var completer = readline.NewPrefixCompleter(
 func parseCommand(line string) []string {
 	var parts []string
 	var current strings.Builder
-	inQuotes := false
+	var quoteChar rune = 0 // Use a rune to store the active quote character (' or ")
 
-	for i := 0; i < len(line); i++ {
-		ch := line[i]
-		switch ch {
-		case '"':
-			inQuotes = !inQuotes
-		case ' ', '\t':
-			if inQuotes {
-				current.WriteByte(ch)
-			} else if current.Len() > 0 {
+	for _, ch := range line {
+		switch {
+		// If we see a quote character
+		case ch == '\'' || ch == '"':
+			if quoteChar == 0 {
+				// Not currently inside a quoted string, so start one
+				quoteChar = ch
+			} else if quoteChar == ch {
+				// Inside a quoted string and found the matching quote, so end it
+				quoteChar = 0
+			} else {
+				// Inside a quoted string but found the *other* type of quote, treat it as a literal character
+				current.WriteRune(ch)
+			}
+		// If we see a space or tab and are NOT inside a quoted string
+		case (ch == ' ' || ch == '\t') && quoteChar == 0:
+			if current.Len() > 0 {
 				parts = append(parts, current.String())
 				current.Reset()
 			}
+		// Any other character
 		default:
-			current.WriteByte(ch)
+			current.WriteRune(ch)
 		}
 	}
 
+	// Add the last part if it exists
 	if current.Len() > 0 {
 		parts = append(parts, current.String())
 	}