[GHC] #2946: tracing should be controled by a global flag (it should not be resume context specific)

[GHC]

#2946: tracing should be controled by a global flag (it should not be resume
context specific)
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 Reporter:  phercek           |          Owner:                  
     Type:  feature request   |         Status:  new             
 Priority:  normal            |      Milestone:                  
Component:  GHCi              |        Version:  6.10.1          
 Severity:  minor             |     Resolution:                  
 Keywords:  debugger          |       Testcase:                  
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
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Comment (by phercek):

 Current :steplocal fills in trace history with all source locations
 executed even when they are not inside the function stepped through using
 :steplocal. If this is accepted then the source locations outside the
 localy stepped function should not be logged to trace history if trace is
 not set to True. Actually I think the locations ouside the locally stepped
 function should not be added to the trace history even when this is
 rejected in general.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2946#comment:2>
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