Use of aliases in a yaml file

[jburnich]

Description

I have a yaml file with this format :

name: &alias key
*alias: value

which correspond to :

name: key
key: value

I have the following error:

[+] YamlFix: Fixing files
/usr/lib/python3/dist-packages/requests/__init__.py:89: RequestsDependencyWarning: urllib3 (1.26.12) or chardet (3.0.4) doesn't match a supported version!
  warnings.warn("urllib3 ({}) or chardet ({}) doesn't match a supported "
Traceback (most recent call last):
  File "/home/jordan/.local/bin/yamlfix", line 8, in <module>
    sys.exit(cli())
  File "/home/jordan/.local/lib/python3.8/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/home/jordan/.local/lib/python3.8/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "/home/jordan/.local/lib/python3.8/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/jordan/.local/lib/python3.8/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/home/jordan/.local/lib/python3.8/site-packages/yamlfix/entrypoints/cli.py", line 86, in cli
    fixed_code, changed = services.fix_files(files_to_fix, check, config)
  File "/home/jordan/.local/lib/python3.8/site-packages/yamlfix/services.py", line 82, in fix_files
    fixed_source = fix_code(source, config)
  File "/home/jordan/.local/lib/python3.8/site-packages/yamlfix/services.py", line 154, in fix_code
    source_code = fixer.fix(source_code=source_code)
  File "/home/jordan/.local/lib/python3.8/site-packages/yamlfix/adapters.py", line 362, in fix
    source_code = fixer(source_code)
  File "/home/jordan/.local/lib/python3.8/site-packages/yamlfix/adapters.py", line 380, in _ruamel_yaml_fixer
    for source_dict in source_dicts:
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/main.py", line 477, in load_all
    yield constructor.get_data()
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/constructor.py", line 134, in get_data
    return self.construct_document(self.composer.get_node())
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/composer.py", line 63, in get_node
    return self.compose_document()
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/composer.py", line 96, in compose_document
    node = self.compose_node(None, None)
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/composer.py", line 142, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/composer.py", line 215, in compose_mapping_node
    while not self.parser.check_event(MappingEndEvent):
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/parser.py", line 150, in check_event
    self.current_event = self.state()
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/parser.py", line 636, in parse_block_mapping_key
    if self.scanner.check_token(KeyToken):
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/scanner.py", line 1826, in check_token
    self.fetch_more_tokens()
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/scanner.py", line 240, in fetch_more_tokens
    return self.fetch_stream_end()
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/scanner.py", line 462, in fetch_stream_end
    self.remove_possible_simple_key()
  File "/home/jordan/.local/lib/python3.8/site-packages/ruyaml/scanner.py", line 401, in remove_possible_simple_key
    raise ScannerError(
ruyaml.scanner.ScannerError: while scanning a simple key
  in "<unicode string>", line 2, column 1:
    *alias: value
    ^ (line: 2)
could not find expected ':'
  in "<unicode string>", line 2, column 14:
    *alias: value
                 ^ (line: 2)

[lyz-code]

I can reproduce the error, but the error looks to be from the upstream library ruyaml. Can you open an issue too on their repo and link it here?

Thanks