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Example of the issue on zsh with autocd turned on:
~/directory % cat <<!
subdir1
subdir2
subdir3
!
[the output of cat]
~/directory/subdir1 %
The cwd has changed due to the heredoc lines being incorrectly split.
Another, much more threatening example:
~/ % ls
[the directory is empty]
~/ % cat <<!
touch newfile
!
[the output of cat]
~/ % ls
newfile
It actually may lead to unintentional code execution.
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Example of the issue on zsh with autocd turned on:
The cwd has changed due to the heredoc lines being incorrectly split.
Another, much more threatening example:
It actually may lead to unintentional code execution.