The `describe` method doesn't work on `ComplexMap`
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Description
The following code fails
```
describe id_(complex QQ^1)
```
With the following error:
```
error: no method found for applying unhold to:
{ 1 1 }
argument : {0:QQ <--------- QQ :0} (of class VerticalList)
{ | 1 | }
```
The cause appears to be that `expression(ComplexMap)` appears to return a `VerticalList` instead of an `Expression`.
@ggsmith @mahrud
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- Open a pull request that references the issue number.
Research direction
Start by reproducing the failure with `describe id_(complex QQ^1)` and inspect how `expression(ComplexMap)` produces its result. Determine why the result is a `VerticalList` rather than an `Expression`; done means the example runs without the reported `unhold` error.
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Assessment
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100