Am Sonntag 28 Februar 2010 08:54:38 schrieb Kwanghoon Choi:

Dear Haskeller,

I have a little issue in using GHCi as follows:

=== Prelude> length "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa" <interactive>:1:254: lexical error in string/character literal at character '\EOT' ===

Hm, Prelude> length "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 99 Prelude> length "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 549 And it shouldn't get an \EOT anyway, also column 254 is way past the String.

It seems to me that GHCi doesn't allow me to type more than some specified length of a command.

There's some limit (memory, terminal buffer), but in practice, you shouldn't ever come near it.

Is this interpretation correct? How can I make it longer?

This issue is quite important at least to me. My tool is just a simple Haskell program. I don't like to add any extra interactive environment, but I like to just use GHCi as an interactive environment for my tool. I strongly believe that this ides is pervasive among many haskellers.

So, ghci got the command from your tool and not from you typing at the prompt? Then it seems your tool outputs unwanted \EOT characters, it might be worth to check.

Thanks in advance for your help/feedback in advance.

Kwanghoon