Bug 717367

Summary: Printing troubles of wide and single-byte character sequences using LANG=C
Product: Red Hat Enterprise Linux 6 Reporter: Vojtech Vitek <vvitek>
Component: tcshAssignee: David Kaspar // Dee'Kej <deekej>
Status: CLOSED ERRATA QA Contact: Iveta Wiedermann <isenfeld>
Severity: low Docs Contact:
Priority: medium    
Version: 6.3CC: dkutalek, hripps, isenfeld, ovasik
Target Milestone: rcKeywords: Patch
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: tcsh-6.17-33.el6 Doc Type: Bug Fix
Doc Text:
NO_DOCS
 Story Points: ---
Clone Of: 717282
: 1273895 (view as bug list) Environment:
Last Closed: 2016-05-11 00:54:58 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 717282    
Bug Blocks: 1254457, 1273895    
Attachments:
Description Flags
Extracted upstream patch deekej: review+

Description Vojtech Vitek 2011-06-28 17:03:29 UTC 
+++ This bug was initially created as a clone of Bug #717282 +++

Description of problem:
tcsh has some troubles with printing sequences of wide (eg. 'ö') and single-byte ASCII characters (eg. 'a') using LANG=C.

Steps to Reproduce:
1. Set LANG=C
2. Start tcsh
3. Type a wide character (eg. 'ö')
4. Type any single-byte ASCII character (eg. 'a')
  
Actual results:
The single character is printed 6 times instead of just once. For example when "öa" is typed, "aaaaaa" is printed.

Expected results:
The single character shall be printed just once, as expected.

Additional info:
The bug was revealed in bug 676305 comment 5.
Comment 5 Suzanne Logcher 2012-02-14 23:10:39 UTC 
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unfortunately unable to
address this request at this time. Red Hat invites you to
ask your support representative to propose this request, if
appropriate and relevant, in the next release of Red Hat
Enterprise Linux. If you would like it considered as an
exception in the current release, please ask your support
representative.
Comment 6 Fridolín Pokorný 2013-04-12 09:37:09 UTC 
Created attachment 734633 [details]
Extracted upstream patch

This bug was fixed in upstream in tcsh-6.17.03. Attached solution extracted from upstream patch.
Comment 8 RHEL Program Management 2013-10-14 01:03:55 UTC 
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unable to address this
request at this time.

Red Hat invites you to ask your support representative to
propose this request, if appropriate, in the next release of
Red Hat Enterprise Linux.
Comment 12 David Kaspar // Dee'Kej 2016-01-08 14:00:55 UTC 
Comment on attachment 734633 [details]
Extracted upstream patch

The patch is working and solves the issue. However, please note that the solution might be different than expected...

1) export LANG=C
2) ./tcsh
3) writing some wide-character (for our example lets use the already mentioned ö)

It will result in showing the escape sequence:
> \303\266

This is a different behaviour compared to e.g. bash (which will print the ö character instead). I have confirmed with upstream that this is a correct and currently designed behaviour. [See http://mx.gw.com/pipermail/tcsh/2016-January/004961.html]
Comment 17 errata-xmlrpc 2016-05-11 00:54:58 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0938.html