[asterisk-bugs] [Asterisk 0015056]: [patch] Blank FORWARD_CONTEXT is not ignored

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=15056 
====================================================================== 
Reported By:                p_lindheimer
Assigned To:                seanbright
====================================================================== 
Project:                    Asterisk
Issue ID:                   15056
Category:                   Applications/app_dial
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     closed
Asterisk Version:           1.4.21.1 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
Resolution:                 fixed
Fixed in Version:           
====================================================================== 
Date Submitted:             2009-05-07 17:53 CDT
Last Modified:              2009-05-29 22:28 CDT
====================================================================== 
Summary:                    [patch] Blank FORWARD_CONTEXT is not ignored
Description: 
Once you have set FORWARD_CONTEXT=some-context in your dialplan, it is not
possible to "unset" the channel variable. Therefore the only way to unset
it is to set it blank:

exten => exten,n,Set(FORWARD_CONTEXT=)

However this appears to result in Asterisk using a non-existent blank
context for the forwarded call resulting in it failing.

Since there is no way to reset a context, I would expect this to treat a
blank context as if the variable was not set.
====================================================================== 

---------------------------------------------------------------------- 
 (0105773) svnbot (reporter) - 2009-05-29 22:28
 https://issues.asterisk.org/view.php?id=15056#c105773 
---------------------------------------------------------------------- 
Repository: asterisk
Revision: 198295

_U  branches/1.6.1/
U   branches/1.6.1/apps/app_dial.c

------------------------------------------------------------------------
r198295 | seanbright | 2009-05-29 22:28:06 -0500 (Fri, 29 May 2009) | 22
lines

Merged revisions 198285 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/trunk

................
  r198285 | seanbright | 2009-05-29 23:26:06 -0400 (Fri, 29 May 2009) | 15
lines
  
  Merged revisions 198251 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r198251 | seanbright | 2009-05-29 22:46:41 -0400 (Fri, 29 May 2009) |
8 lines
    
    Treat an empty FORWARD_CONTEXT the same way we treat a missing one.
    
    (closes issue https://issues.asterisk.org/view.php?id=15056)
    Reported by: p_lindheimer
    Patches:
          05292009_bug15056.diff uploaded by seanbright (license 71)
    Tested by: p_lindheimer
  ........
................

------------------------------------------------------------------------

http://svn.digium.com/view/asterisk?view=rev&revision=198295 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-05-29 22:28 svnbot         Checkin                                      
2009-05-29 22:28 svnbot         Note Added: 0105773                          
======================================================================