Once jLine writes over one line to shell, we can't go back to original line

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Hello,

I've encountered the following problem with jLine. We open the command prompt (both linux and windows) and enter a stream of letters until it "spills" over to the next line. for example:

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aa

We then try to delete the entered text, however the cursor will not go back up to the first line and it will remain on the start of the second line. This is a visual issue and not a logic one, since by printing out debug message and by pressing "enter" i can see that the buffer contains the string after all the deletions.

If anyone can help me figure out why this happens and how this can be resolved, it would be greatly appreciated.

Thanks,
Jonathan

Posted 11-Jun-12 3:00am

jonatzin

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2 solutions

Solution 1

I recently had this same problem with a customer who tried to use such a non-break-gabbish to void the print layout.

This is a non valid situation.
The explained situation only happens when there are no breaks/spaces in the line.

But that does not happen in real life, there is no word that is so long.

longest Words @ wikipedia[^]

EDIT:

This is a common bug in the JLine Project:
Bug Report at projects Bug Tracker[^]

Posted 11-Jun-12 4:12am

TorstenH.

Updated 11-Jun-12 22:41pm

v3

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TorstenH. 12-Jun-12 4:39am

Thanks for your reply, I was only using aaaa..... as an example. The real problematic input is more along the lines of:

foo> refresh -f "C:\Program Files (x86)\Windows Security Manager\wsecmgr.exe";"C:\Program Files (x86)\Windows Security Manager\wsecmgr1.exe"

as you can see there are plenty of breaks in the lines, however the issue still presists

TorstenH. 12-Jun-12 4:41am

See my edit on the answer.

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jonatzin · Accepted Answer · 2012-06-12T02:05:00

Solution 3

Thanks for the answer! I have no idea how I missed that one. BTW The issue is solved in jline 2.7 by my experience

Posted 12-Jun-12 2:05am

jonatzin