Commits on Aug 22, 2022

1. go/printer: make ExampleFprint correctly run as online example …

   function "ExampleFprint" will be rewritten to function "main"
   when displayed on the godoc pages, so the online example is failed to
   run:
   
       Output:
   
       panic: function not found
   
       goroutine 1 [running]:
       main.parseFunc({0x4f772e, 0xf}, {0x4f713f, 0xd})
               /tmp/sandbox1264544227/prog.go:23 +0x13b
       main.main()
               /tmp/sandbox1264544227/prog.go:30 +0x45
   
   See: https://pkg.go.dev/go/printer#example-Fprint
   
   Add printSelf function to prevent the function not found when running in godoc
   sandbox. Beside, deleting the dummy test function to make the example show
   the entire file, as we want to show the newly added printSelf function.

   

   SilverRainZ committed Aug 22, 2022
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