Unescaped DELETE control character U+007F fails with "unacceptable character"
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评估
调研方向
Start by reproducing the reported command, python -m openapi_spec_validator --schema 2.0 openapi-spec.json, with both the literal U+007F and its \u007f form. The payload names no source file or test, so trace where parsing rejects the character and whether the dependency is responsible. Done means the expected behavior is implemented and covered for both inputs, or the dependency limitation is clearly documented.
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描述
Note: I am not entirely sure if the source of this issue lies within the scope of this library of any of its dependencies.
Situation
My (openAPI specification) JSON file contains a string with an unescaped DELETE control character, U+007F.
"examples" : {
"image/png" : "" # should be U+007F (Github seems to redact this character)
},
Output of python -m openapi_spec_validator --schema 2.0 openapi-spec.json is:
unacceptable character #x007f: special characters are not allowed
in "<urllib response>", position 1082
If we replace the character by its encoded equivalent, like this:
"examples" : {
"image/png" : "\u007f"
},
the result is: OK
Expected
In my understanding, RFC 7159 (obsolete) RFC 8259 allows this specific control character to appear escaped and unescaped inside JSON strings: https://tools.ietf.org/html/rfc8259#section-7.
Therefore, I expect OK for both Inputs mentioned above.
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