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

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15056 
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Reported By:                p_lindheimer
Assigned To:                seanbright
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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:           
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Date Submitted:             2009-05-07 17:53 CDT
Last Modified:              2009-05-29 22:26 CDT
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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.
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---------------------------------------------------------------------- 
 (0105771) svnbot (reporter) - 2009-05-29 22:26
 https://issues.asterisk.org/view.php?id=15056#c105771 
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Repository: asterisk
Revision: 198285

_U  trunk/
U   trunk/apps/app_dial.c

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r198285 | seanbright | 2009-05-29 22:26:07 -0500 (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
........

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http://svn.digium.com/view/asterisk?view=rev&revision=198285 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-05-29 22:26 svnbot         Checkin                                      
2009-05-29 22:26 svnbot         Note Added: 0105771                          
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