bug#70277: Crash when attempting to create a regular button

[Mats Lidell]

> Marc Coquand writes:
> Heya!
>
> I'm having issues creating a regular Hyperbole button with {C-h h i c}
> and Info-index.
>
> I wanted to link to a specific info page, however, after setting a label
> and attempting to link to Info-index, I get the error:
>
> Debugger entered--Lisp error: (error "Cannot clone a file-visiting buffer")
>   error("Cannot clone a file-visiting buffer")
>   clone-buffer()
>   byte-code("\304\305 \306 \307\30\31\32\33\310 \210\311\216r\nq\210\312
>   \210\313\314\315\".\6C\207" [Info-history-list Info-complete-nodes
>   Info-complete-menu-buffer completion-ignore-case t clone-buffer
>   Info-index-nodes nil info--ensure-not-in-directory-node
>   #f(compiled-function () #<bytecode 0x1f9d9807f94f6>) Info-goto-index
>   completing-read "Index topic: " Info-complete-menu-item] 4)
>   hargs:iform-read((interactive (byte-code "\304\305 \306
>   \307\30\31\32\33\310 \210\311\216r\nq\210\312
>   \210\313\314\315\".\6C\207" [Info-history-list Info-complete-nodes
>   Info-complete-menu-buffer completion-ignore-case t clone-buffer
>   Info-index-nodes nil info--ensure-not-in-directory-node
>   #f(compiled-function () #<bytecode 0x1f9d9807f94f6>) Info-goto-index
>   completing-read "Index topic: " Info-complete-menu-item] 4)) nil)
>   hargs:action-get(#<subr Info-index> nil)
>   hargs:actype-get(Info-index)
>   hui:ibut-create(nil nil)
>   funcall-interactively(hui:ibut-create nil nil)
>   hui:menu-act(hyperbole nil nil nil)
>   hyperbole(nil nil nil nil)
>   funcall-interactively(hyperbole nil nil nil nil)
>   command-execute(hyperbole)
>
> Version is 20240401.1927.
>
> I'm also noticing that regular info is broken as well:
>
> {C-h h i c eat<RET>info<RET>}
>
> Creates the following:
>
> <[eat]> - <nil nil nil>
>
> Thanks in advance for any help.
>
> Sincerely,
> Marc

Hi Marc,

Thanks for your report. We have confirmed the problems and are working on it.

%% Mats