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Feature #16001

Updated by piotrmurach (Piotr Murach) over 2 years ago

As it is common to use `caller_locations(1,1)` and `caller(1,1)`, this proposes aliases an alias to help get the previous backtrace frame and improve performance by avoiding avoid common beginner mistakes getting full backtrace information. 

 The currently suggestions are: 
 * `immediate_caller` 
 * `first_caller` `caller_first` 
 * `caller_only` 

 This feature request is based on a conversation with Charles Nutter who says: 
 > This is such a common thing... maybe we need to add something like #caller_only or #caller1 that basically do caller(1,1).

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