Re: port x-symbol to GNU emacs 24.
Emacs' overlays serve the same purpose as XEmacs' extents,
and I think
there is or has been some 3rd-party package providing a unified API for
overlays and extents.
Indeed there is: it's overlay.el (which adds Emacs's API to XEmacs and
hence doesn't help here).
But I have no clue what specifiers are...
Presumably this code was not run in Emacs-21, so you'll have to figure
out why (maybe some `fboundp' which returned t in Emacs-21 but doesn't
any more?).
I just downloaded x-symbol 4.5.1, and in its x-symbol-emacs.el there
are
several aliases defined for things that error for you. For example,
`map-extents' is made an alias for `cl-map-overlays'.
Was renamed to cl--map-overlays back in the cl-lib overhaul.
David wrote:
The main "not elsewhere" category I see are XEmacs'
extensive input
modes (grid which is sort of a buffer-based menu, keyboard input methods
quite better sorted and convenient than what Quail offers and with
better feedback). Its buffer reencoding is a rather mixed blessing, but
it works with more than just TeX modes.
I never found the buffer-reencoding very convincing/convenient and even
less so nowadays, but indeed I sometimes miss the various input methods
of X-Symbol. Ideally, those should be extracted into their own package.
Stefan
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