IRkernel doesn't work with CRLF line endings

[econwang]

thanks for providing this, very useful, I do use it with python and stata, but with R, as suggested by the readme, it should work with IRKernel, if I only select one line, it works well, but when select multi lines or the whole file, it shows:

Error in parse(text = x, srcfile = src): <text>:2:33: unexpected input
1: # test IRkernel
2: x <- seq(0, 2*pi, length.out=50)
                                   ^
Traceback:

the r code is:

x <- seq(0, 2*pi, length.out=50)
plot(x, sin(x))

[n-riesco]

I'm sorry for the delay in replying.

Could you open the dev console (by pressing shift-ctrl-i) and post an screenshot? This will help us debug the issue.

[igutierrezm]

I have the same problem. Here is the dev console. Help me please! :)

[lgeiger]

Are you using the latest version of the IRkernel?

[igutierrezm]

yes

[lgeiger]

Hmm this is strange, on the Hydrogen side everything looks normal. I bet it has something to do with the line endings. Could you try running

x <- 1;
y <- x + 1;

I don't have IRkernel on my machine so I can only guess at the moment.

[igutierrezm]

same result :(

[lgeiger]

I'll try to get a r kernel running on my windows VM so I can debug it.

[igutierrezm]

thank you very much :)

[lgeiger]

OK I can reproduce this.

[lgeiger]

IRkernel doesn't like windows style line endings.

There is a easy fix for that: Click on CRLF in the status bar and select LF. This will switch to unix style line endings.

@rgbkrk @n-riesco Should we ensure unix style line endings before sending code to a kernel or should this be handled by the kernel itself?

[igutierrezm]

It works! Thanks!

[rgbkrk]

Interesting. I don't think that's specified anywhere in the messaging spec. I'll raise an issue on jupyter-client.

[lgeiger]

@igutierrezm In the next release this will be fixed so you can use CRLF line endings again.