### ImageMagick version

7.1.1.28

### Operating system

MacOS

### Operating system, version and so on

Ventura

### Description

The following no longer works and did not work in the previous IM version also. I am not sure in how many release it has been broken.  It used to work many releases ago.

![noseguy](https://github.com/ImageMagick/ImageMagick/assets/13458218/023ed67f-5dd3-4fa7-9cf3-56ddae9b5412)


```
img64=$(magick noseguy.gif inline:png:-)
magick inline:$img64 noseguy_b64.png
```

The variable is empty and the read then hangs with no messages



### Steps to Reproduce

see above

### Images

see above
Issue with write/read base64 via variable
This is a GitHub Issue
repo:ImageMagick
owner:ImageMagick
Title : Issue with write/read base64 via variable
Issue date:

--- start body ---
### ImageMagick version

7.1.1.28

### Operating system

MacOS

### Operating system, version and so on

Ventura

### Description

The following no longer works and did not work in the previous IM version also. I am not sure in how many release it has been broken.  It used to work many releases ago.

![noseguy](https://github.com/ImageMagick/ImageMagick/assets/13458218/023ed67f-5dd3-4fa7-9cf3-56ddae9b5412)


```
img64=$(magick noseguy.gif inline:png:-)
magick inline:$img64 noseguy_b64.png
```

The variable is empty and the read then hangs with no messages



### Steps to Reproduce

see above

### Images

see above
--- end body ---
