Re: window configurations no longer (since 21.5) include windows
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Michael Sperber writes:
Thanks for working on this!
You're welcome.
Two questions:
> ;;; Code:
>
> + ;; Protect two crucial functions from the impact of advice
> + ;; (Any others need to be treated similarly?)
> + ;; ht(a)inf.ed.ac.uk Sun Mar 16 09:27:35 2008
> +
> + (unless (fboundp 'orig-split-window)
> + (fset 'orig-split-window (symbol-function 'split-window)))
> +
> + (unless (fboundp 'orig-delete-window)
> + (fset 'orig-delete-window (symbol-function 'delete-window)))
> +
What specifically is this bit for? Did you see concrete instances of
advice for `split-window' and `delete-window' that would break the
window-configuration code?
Yes, for sure, in ecb. And I think this is justified in any case, as
historically the functions now in xemacs-window.el which involved
deleting or splitting windows were implemented in C, and did their
deletions and splits in C, so advising delete-window or split-window
didn't affect them. By making window-xemacs use private versions of
those functions, that functionality is preserved.
> + (defmacro save-window-excursion/mapping (&rest body)
> + "Execute BODY, preserving window sizes and contents.
> + Restores which buffer appears in which window, where display starts,
> + as well as the current buffer.
> + Does not restore the value of point in current buffer.
> + On non-error return, value is cons of BODY value and list of
> + remapped windows (see set-window-configuration/mapping for
> + more on remapping)."
Do we really the need the cons return value?
No. Go ahead and remove it. I just did it for plug-to-plug
compatibility, as it were.
It seems the return value of `save-window-excursion' is rarely
used---I'd rather just return the mapping, and the let the user
preserve the return value if necessary?
Yup.
(I didn't see a use for `save-window-excursion/mapping' in
your ECB
patch, which is why I'm asking.)
Indeed. Turns out that set-window-excursion/mapping is much more
useful/likely to get used, I think.
ht
- --
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
Half-time member of W3C Team
2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht(a)inf.ed.ac.uk
URL: http://www.ltg.ed.ac.uk/~ht/
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