fmt.Formatter is not called for %T #73528
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Issues describing a possible bug in the Go implementation.
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(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.) |
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Although one could argue it should pass T to the Formatter, I intended it for debugging and so it deliberately ignores all the non-standard routes. So perhaps unfortunate in your case but it's working as intended, according to its author. |
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This is documented.
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Thanks, don't know how I missed that. |
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Go version
main
Output of
go envin your module/workspace:What did you do?
Pass %T to a format function with an arg that implements fmt.Formatter
fmt.Formatter.Format is not invoked for %T verb. It's also not documented. I believe %p is the same.
What did you see happen?
The type of the arg is printed, rather than performing the action of fmt.Formatter.Format for the type with the
Tverb.What did you expect to see?
The result of executing fmt.Formatter.Format for the arg's type.
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