Fix #1474: Preserve Unicode escapes in verbose JSON output

httpie/output/streams.py

@@ -5,7 +5,7 @@
 from .processing import Conversion, Formatting
 from ..context import Environment
 from ..encoding import smart_decode, smart_encode, UTF8
-from ..models import HTTPMessage, OutputOptions
+from ..models import HTTPMessage, HTTPRequest, OutputOptions
 from ..utils import parse_content_type_header
 
 
@@ -217,6 +217,10 @@ def iter_body(self) -> Iterable[bytes]:
             first_chunk = False
 
     def process_body(self, chunk: Union[str, bytes]) -> bytes:
+        if isinstance(self.msg, HTTPRequest) and self.mime == 'application/json':
+            if isinstance(chunk, (bytes, bytearray)):
+                return bytes(chunk)
+            return smart_encode(chunk, self.output_encoding)
         if not isinstance(chunk, str):
             # Text when a converter has been used,
             # otherwise it will always be bytes.

tests/test_output.py

@@ -334,6 +334,15 @@ def test_format_option(self, httpbin):
         assert r.strip().count('\n') == 2
         assert COLOR not in r
 
+    def test_verbose_json_request_body_preserves_unicode_escapes(self):
+        r = http(
+            '--verbose', '--offline', '--pretty=format',
+            'example.org',
+            f'a:={json.dumps(chr(0x3042))}',
+        )
+        assert '{"a": "\\u3042"}' in r
+        assert chr(0x3042) not in r
+
 
 class TestLineEndings:
     """