Rajula, you can debug the code in graphical mode also. Would you mind investigating the bug and proposing a fix? It should not be difficult :) Guille On Sat, Aug 12, 2017 at 3:39 PM, Rajula Vineet <Vineet.Reddy@iiitb.org> wrote:

Hi Rajula

Hey

On Sat, Aug 12, 2017 at 12:56 AM, Rajula Vineet <[hidden email]> wrote:

Hey,

I have been trying to print on the command line as a part of my handler implementation. I have been using `nextPutAll: aString;lf.` Apparently, 'lf' does not seem to work. I tried 'cr' too. I am using the latest 7.0 Pharo-vm and pharo image. I tried 'OSPlatform current lineEnding' as suggested by Clement Mastin. But, when I used the 6.0 version the 'lf' message is working fine.

We did some changes to remodularize a bit more the kernel some weeks ago.

The correct way to print a line ending is, as Clement pointed out, 'OSPlatform current lineEnding'. That is because there is no portable character for a new line. Each platform has its own.

Oh! Cool!

That said, maybe you found a bug :). Since the image before automatically transformed cr's in line endings for a platform, I did a stream decorator that replaces that behaviour for Pharo 7, I just did it to make it work, did not test it further actually.

Oh! Yeah, it might be a bug.

Could you try the following?

- seeing what happens if you print a new line twice? nextPutAll: aString; lf;lf

I tried it out, it is not changing anything. No new line.

- What is the stream you're using to print out? Transcript or Stdout? Could you show the entire expression you're using?

Yeah, I am using stdout. This is the expression self stdoutnextPutAll: (SystemVersion current highestUpdate) asString;lf.

- Can you print out the stream you're using? stream nextPutAll: stream asString; lf.

Yeah, the stream I am using is a VTermOutputDriver.

Guille

Rajula

Please find the attached image which demonstrates the same. The left terminal is of version 7.0, right one is of 6.0. Can someone help me out with this? <http://forum.world.st/file/n4960327/Screenshot_from_2017- 08-11_00-04-29.png>

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Guille Polito

Research Engineer

French National Center for Scientific Research - http://www.cnrs.fr

Web: http://guillep.github.io

Phone: +33 06 52 70 66 13 <+33%206%2052%2070%2066%2013>

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-- Guille Polito Research Engineer French National Center for Scientific Research - *http://www.cnrs.fr* <http://www.cnrs.fr> *Web:* *http://guillep.github.io* <http://guillep.github.io> *Phone: *+33 06 52 70 66 13

Hey Guille, I think I found the fix. But I would like to run by you first. I want to get a review before making a PR. In the method nextPut: in ZnCrProtableWriteStream, when a new line character is sent using 'OSPlatform current lineEnding', there isn`t any statement which satisfies in this nextPut:. So at the end where the character is checked if it`s a new line, when I added a ifFalse statement and added self newline. Full code is as follows nextPut: aCharacter (String crlf includes: aCharacter ) ifFalse: [ previous ifNotNil: [ self newLine ]. ^ stream nextPut: aCharacter ]. previous = Character cr ifTrue: [ self newLine ]. aCharacter ~= Character lf ifTrue: [ previous := aCharacter ] ifFalse:[ self newLine ]. The only change is the last line. Rajula -- View this message in context: http://forum.world.st/New-line-on-command-line-tp4960327p4961385.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.