## Description
Closes: #11463
---
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## Description
closing in on completion of linting
---
### Author Checklist
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* [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
* [ ] added `!` to the type prefix if API or client breaking change
* [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#pr-targeting))
* [ ] provided a link to the relevant issue or specification
* [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/docs/building-modules)
* [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#testing)
* [ ] added a changelog entry to `CHANGELOG.md`
* [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
* [ ] updated the relevant documentation or specification
* [ ] reviewed "Files changed" and left comments if necessary
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### Reviewers Checklist
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## Description
Ref: https://github.com/cosmos/cosmos-sdk/issues/15170
Included in: #15515
Required to resolve a discrepancy between the sign mode being implemented in #15170 and the existing legacy one.
When calling tx builder [SetMsgs](https://github.com/cosmos/cosmos-sdk/blob/4a6a1e3cb8de459891cb0495052589673d14ef51/x/auth/tx/builder.go#L208) messages are coerced to an any type in [NewAnyWithValue](https://github.com/cosmos/cosmos-sdk/blob/4a6a1e3cb8de459891cb0495052589673d14ef51/codec/types/any.go#L61). This marshals a message as proto bytes. If a message has cosmos.Dec typed fields, and they are set to nil, the will be set to 0 during seriazliation in the [Dec.Marshal](https://github.com/cosmos/cosmos-sdk/blob/88909d6f2b86dee6969a76e1e0e3c106fe8fd20c/math/dec.go#L801) implementation.
This side effect *changes* the output of a JSON marshal before and after the call to Dec.Marshal, as shown below.
```go
rates := &stakingtypes.CommissionRates{}
MarshalJson(rates)
// {"rate":"0","max_rate":"0","max_change_rate":"0"}
MarshalProto(rates)
MarshalJson(rates)
//{"rate":"0.000000000000000000","max_rate":"0.000000000000000000","max_change_rate":"0.000000000000000000"}
```
An integration is test is also committed asserting the (now fixed) behavior above. Its asserts should be changed once a release of math is made and `/tests/go.mod` is updated.
---
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* [ ] added `!` to the type prefix if API or client breaking change
* [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#pr-targeting))
* [ ] provided a link to the relevant issue or specification
* [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/docs/building-modules)
* [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#testing)
* [ ] added a changelog entry to `CHANGELOG.md`
* [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
* [ ] updated the relevant documentation or specification
* [ ] reviewed "Files changed" and left comments if necessary
* [ ] confirmed all CI checks have passed
### Reviewers Checklist
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I have...
* [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
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* [ ] reviewed state machine logic
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## Description
Added a little bit more comments to note about the meaning / type of the numeric time values.
When I'm creating the vesting accounts, I always have to double check it, and end up looking at the code.
Likhita Polavarapu
Facundo Medicaandmarbar3778
testinginprodandunknown unknown
Matt KocubinskiandAaron Craelius
Andrey Petrovich
Mark Rushakoff
Jacob Gadikian
Robert Zaremba
Amaury