Remove support for custom lexers temporarily

When tmbo/questionary#70 gets fixed, this commit should be rolled back.

For now, I have to remove this support because [otherwise I cannot publish Copier to Pypi](https://github.com/copier-org/copier/runs/1241180809?check_suite_focus=true).

copier/config/user_data.py

@@ -11,9 +11,7 @@
 from iteration_utilities import deepflatten
 from jinja2 import UndefinedError
 from jinja2.sandbox import SandboxedEnvironment
-from prompt_toolkit.lexers import PygmentsLexer
 from pydantic import BaseModel, Field, validator
-from pygments.lexers.data import JsonLexer, YamlLexer
 from questionary import prompt
 from questionary.prompts.common import Choice
 from yamlinclude import YamlIncludeConstructor
@@ -208,7 +206,6 @@ def get_placeholder(self) -> str:
 
     def get_questionary_structure(self):
         """Get the question in a format that the questionary lib understands."""
-        lexer = None
         result = {
             "default": self.get_default(for_rendering=True),
             "filter": self.filter_answer,
@@ -234,12 +231,6 @@ def get_questionary_structure(self):
         if questionary_type == "input":
             if self.secret:
                 questionary_type = "password"
-            elif self.type_name == "yaml":
-                lexer = PygmentsLexer(YamlLexer)
-            elif self.type_name == "json":
-                lexer = PygmentsLexer(JsonLexer)
-            if lexer:
-                result["lexer"] = lexer
             result["multiline"] = self.get_multiline()
             placeholder = self.get_placeholder()
             if placeholder:

pyproject.toml

@@ -33,8 +33,7 @@ jinja2 = "^2.11.2"
 pathspec = "^0.8.0"
 plumbum = "^1.6.9"
 pydantic = "^1.5.1"
-# HACK https://github.com/tmbo/questionary/pull/70
-questionary = {git = "https://github.com/Yajo/questionary.git", rev = "text-custom-lexer"}
+questionary = "^1.6.0"
 pyyaml = "^5.3.1"
 pyyaml-include = "^1.2"
 # packaging is needed when installing from PyPI

tests/test_prompt.py

@@ -1,10 +1,12 @@
+import inspect
 from pathlib import Path
 
 import pexpect
 import pytest
 import yaml
 from plumbum import local
 from plumbum.cmd import git
+from questionary.prompts.text import text
 
 from .helpers import COPIER_PATH, Keyboard, build_file_tree
 
@@ -245,3 +247,13 @@ def test_multiline(tmp_path_factory, spawn, type_):
             "question_4": ("answer 4"),
             "question_5": ("answer 5"),
         }
+
+
+def questionary_supports_custom_lexer():
+    """Check that questionary doesn't support custom lexers.
+
+    If this test fails, it means that https://github.com/tmbo/questionary/pull/70
+    was merged and then you should revert https://github.com/copier-org/copier/pull/289
+    to enable lexer support.
+    """
+    assert "lexer" not in inspect.signature(text).parameters