image_info output can cause issues with Bash (ESPTOOL-999)

[KaeLL]

Operating System

Linux

Esptool Version

4.9.dev4

Python Version

Python 3.13.1

Full Esptool Command Line that Was Run

VAR=$(esptool.py image_info -v 2 build/app.bin | tr '\0' '?')

Esptool Output

...
Application information
=======================
Project name: app??????????
App version: 1.2.3???????????????????????????
Compile time: Jan 17 2025????? 14:43:46????????
...

What is the Expected Behaviour?

The output from the binary header should be sanitized because Bash doesn't handle NUL bytes particularly well in strings, variables, and it can cause problems for scripts.
In this case, Bash complains: bash: warning: command substitution: ignored null byte in input

More Information

No response

Other Steps to Reproduce

No response

[radimkarnis]

Hello @KaeLL,
thanks for the report!

We'll sanitize the app info and bootloader desc.