[tor-bugs] #4913 [Stem]: Add stem.util.conf.Config.save()

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#4913: Add stem.util.conf.Config.save()
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 Reporter:  gsathya      |          Owner:  atagar      
     Type:  enhancement  |         Status:  needs_review
 Priority:  normal       |      Milestone:              
Component:  Stem         |        Version:              
 Keywords:               |         Parent:              
   Points:               |   Actualpoints:              
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Comment(by gsathya):

 Ok I think we need a different approach. Config.get() returns only the
 last updated value if I pass Multiple=False.
 So in case we have a config file like -
 {{{
       startup.run export PATH=$PATH:~/bin
       startup.run alias l=ls
 }}}

 We'd only be writing {{{ startup.run alias l=ls }}} into the config file
 and {{{  startup.run export PATH=$PATH:~/bin }}} would get pruned.

 On the other hand, if we pass Multiple = True, we'd get a list of values
 which we dont need like {{{ login.password -> ["foo", "bar", "fubar"] }}}.
 In this case we only need {{{ login.password -> ["foo"] }}}

 We can fix this by storing only multiple values and overwriting the old
 ones.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4913#comment:4>
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