[vim/vim] `q:` command is disabled while executing a register (Issue #19967)

[HPWiz]

HPWiz created an issue (vim/vim#19967)

Steps to reproduce

Start with an empty file, and type

:let@a='q:'
@a

Expected behaviour

It should execute the command q:, opening the command-line window. However the q is ignored.
I believe this is because: "The 'q' command is disabled while executing a register, and it doesn't work inside a mapping and :normal." (from :h q)
However, q: does work from inside :normal, and it should work while executing a register. The behaviour for q? and q/ is the same

Version of Vim

9.2.316

Environment

Arch Linux

Logs and stack traces

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[h_east]

h-east left a comment (vim/vim#19967)

It is clearly stated in the documentation.

:h q:

OPEN						*c_CTRL-F* *q:* *q/* *q?*
(snip...)
Note that this is not possible while recording is in progress (the "q" stops recording then).

However, it is currently possible to do this via the command line, not directly through the command line window.
Use :<C-F> instead of q:.
Similarly,
q/ --> /<C-F>
q? --> ?<C-F>

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[HPWiz]

HPWiz left a comment (vim/vim#19967)

I’m afraid you have misread something. I am trying to us q: while executing a register, not “while recording is in progress”. I currently do not see a reason why this should be disallowed

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[zeertzjq]

zeertzjq left a comment (vim/vim#19967)

Changing the behavior of q when executing a register is not backward compatible. Why doesn't you use :call feedkeys(@a, 'i') instead?

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[HPWiz]

HPWiz left a comment (vim/vim#19967)

Thankyou. I was not aware that this would be backwards incompatible. Is there a reason that the expression register @= allows q:?
If it’s definitely backwards incompatible, I will close this issue

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[zeertzjq]

zeertzjq left a comment (vim/vim#19967)

I edited the comment to add an example.

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[HPWiz]

Closed #19967 as completed.

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