[Konsole-devel] [konsole] [Bug 312787] New: Tab character is not printed in last column of output

[adeiross at yahoo.com]

https://bugs.kde.org/show_bug.cgi?id=312787

            Bug ID: 312787
           Summary: Tab character is not printed in last column of output
    Classification: Unclassified
           Product: konsole
           Version: 2.8.5
          Hardware: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: adeiross at yahoo.com

A tab character is not printed between two non-whitespace characters when the
tab occurs in the last column of the output.

In the example below, when I run bash in a Konsole window of width 80 and echo
a string composed of 79 "a" characters, a tab character, and 3 "b" characters,
columns 79-80 of the output contain the string "ab", not separated by any
whitespace.  The output misleadingly gives no indication that there is a tab
character present in the string.

Reproducible: Always

Steps to Reproduce:
1. Launch a konsole session running bash with a width of 80.
2. Run the command below:
$ echo -e
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\tbbb
Actual Results:  
Konsole does not print whitespace between "a" and "b":

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab
bb

Expected Results:  
Konsole should separate the "a" and "b" with whitespace:

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 
bbb

It occurs to me that this behavior might be attributable to bash as opposed to
Konsole.  (The bash version for my Linux VM is 4.2.24.)  I see the same
behavior in xterm-271.  On my Mac running bash 3.2.48, I also see the same
behavior in Terminal.app, but not in iTerm.app -- iTerm.app alone gives the
output I label above as expected.  So perhaps this issue is default bash
behavior, which has been "corrected" only by iTerm.app?

My Linux machine is a VirtualBox VM (hosted by my Mac):
$ uname -a
Linux xubuntu 3.2.0-35-generic #55-Ubuntu SMP Wed Dec 5 17:42:16 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux
$ konsole --version
Qt: 4.8.1
KDE Development Platform: 4.8.5 (4.8.5)
Konsole: 2.8.5

Any insight you can offer would be appreciated.

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