Jline with completion candidates having space giving unexpected output

Question

I am using Jline 3.21.0 and trying to run a simple test with reference from https://github.com/jline/jline3/blob/master/reader/src/test/java/org/jline/reader/completer/StringsCompleterTest.java

Below is one of the modified testcase with candidates having spaces in them. After giving input as "foo b" without quote and pressing tab am expecting output to be "foo bar". But I get output as "foo foo bar".

Is this expected behavior ? How can I fix it ? Thanks in advance.

        DefaultParser dp = (DefaultParser) reader.getParser();
        dp.setEscapeChars(new char[]{});
        reader.setVariable(LineReader.ERRORS, 0);
        reader.setParser(dp);
        reader.setCompleter(new StringsCompleter("foo bar", "foo foo", "foo shoo"));

        assertBuffer("foo bar ", new TestBuffer("foo b").tab()); // fails actual is "foo foo bar"

Answer 1

This is expected behavior. Here is the complete response https://github.com/jline/jline3/issues/792