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bug#35737: xref--original-command

From: Juri Linkov
Subject: bug#35737: xref--original-command
Date: Tue, 28 May 2019 23:30:30 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (x86_64-pc-linux-gnu)

> "revert buffer" sounds like undoing changes, and we're repeating a search
> and refreshing (or maybe reloading) the results.

"revert buffer" is a standard term for updating an Emacs buffer.

> I get the idea, but not the goal. I know why we'd want to make
> xref-find-definitions and project-find-regexp to behave differently. The
> rest, I'm not so clear.
> Anyway, I was hoping my efforts in improving the default behavior would
> benefit your goals as well, but it seems the split between xref--show-xrefs
> and xref--show-defs goes against them. That's too bad.

Thanks for your efforts.  Your recent changes would be useful for other goals,
e.g. making the xref output to use grep-like output format.

>> The goal was to improve the default behavior to make customization easier.
> That's why I added xref-show-definitions-function.
> Customizing display-buffer-alist is an arcane art. The hook this variable
> provides should be easier to understand for an average user.
> So, to clarify, you're not interested in changing the *visible* default
> behavior, at least for now?

No, not a visual change this time.  I'd also close bug#33992 because
it's also leading nowhere.  But maybe your recent patch with
xref--definitions-buffer-mode is an improvement, I don't know.

I'm looking at xref from customization's point of view, and I see no more
improvements that could simplify xref customization.

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