Double quotation mark is not parsed correctly

[miloyip]

In JSON, double quotation mark in a JSON string is escaped as \", such as

["\"foo\""]

should be escaped as "foo". But this library did not handle it and parsed it as \"foo\".

I reproduced the bug with the following test case:

    SECTION("escape_dobulequote")
    {
        auto s = "[\"\\\"foo\\\"\"]";
        json j = json::parse(s);
        CHECK(j == json({"\"foo\""}));
    }

Results:

test/unit.cpp:6351: FAILED:
  CHECK( j == json({"\"foo\""}) )
with expansion:
  ["\\\"foo\\\""] == "\"foo\""

[jgod]

👍 I noticed this too. I've been manually escaping my strings

[nlohmann]

The problem is the escape_string function that seems to escape strings to strictly. I would be glad about help how to improve the function.

[nlohmann]

@miloyip @jgod , could you try https://gist.github.com/nlohmann/84625311b4801cee5420 ?