The printf built-in function does not work as expected

[anouard24]

I tried printf("Hi\n") in the REPL and the result was Hi\n%!(EXTRA []interface {}=[])CometNop.

So, the issues are:

• printf does not interpret special characters like \t or \n.
• if we print something without other arguments, printf print the extra empty []CometObject that was intended to be full of other arguments.

[anouard24]

For escaped characters like \n, I think its from the Lexer.
In the method readString in the lexer package, the lexer read \ and n separately instead of \n.

[anouard24]

@chermehdi, I tried printf("HEY %d YOU %03d TEST", 2020, 11)
and it print:
HEY [2020 11] YOU %!d(MISSING) TEST
We have to unpack []interface{} in printf, then it print HEY 2020 YOU 011 TEST as expected

[chermehdi]

Hmm I see, I noticed something like this a while back when I implemented it, since I didn't have any tests I left it until I figure out a good fix later.

Thanks for creating the bug.