[Pidgin] #14627: silent failure saving conversations

[Pidgin]

#14627: silent failure saving conversations
--------------------------+-------------------------------------------------
 Reporter:  wferi         |     Owner:  rekkanoryo
     Type:  defect        |    Status:  new       
Component:  unclassified  |   Version:  2.7.3     
 Keywords:                |  
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 The ''Save Conversation'' dialog does not provide a failure report when
 Pidgin can't write the file due to space shortage, leading to silent data
 loss. On the other hand an error is correctly reported if Pidgin can't
 '''open''' the file. The issue is reproducible like:
 {{{
 # mount small -t tmpfs /mnt -osize=1k
 $ dd if=/dev/zero bs=1k count=8 of=/mnt/foo
 $ echo hello >/mnt/bar
 bash: echo: write error: No space left on device
 $ rm /mnt/bar
 }}}
 Then try to save a conversation as `/mnt/bar` for example. Pidgin reports
 no error, but the file is created empty.

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Ticket URL: <http://developer.pidgin.im/ticket/14627>
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