fix: Request.from_curl() with prefixed string literals

scrapy/utils/curl.py

@@ -1,4 +1,5 @@
 import argparse
+import re
 import warnings
 from http.cookies import SimpleCookie
 from shlex import split
@@ -7,6 +8,15 @@ from urllib.parse import urlparse
 from w3lib.http import basic_auth_header
 
 
+class DataAction(argparse.Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        value = str(values).encode("utf-8").decode("utf-8")
+        if items := re.findall(r"{.+}", value):
+            value = items[0]
+
+        setattr(namespace, self.dest, value)
+
+
 class CurlParser(argparse.ArgumentParser):
     def error(self, message):
         error_msg = f"There was an error parsing the curl command: {message}"
@@ -17,7 +27,7 @@ curl_parser = CurlParser()
 curl_parser.add_argument("url")
 curl_parser.add_argument("-H", "--header", dest="headers", action="append")
 curl_parser.add_argument("-X", "--request", dest="method")
-curl_parser.add_argument("-d", "--data", "--data-raw", dest="data")
+curl_parser.add_argument("-d", "--data", "--data-raw", dest="data", action=DataAction)
 curl_parser.add_argument("-u", "--user", dest="auth")