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bug#20528: 25.0.50; `keymap' property to work for symbol-value, not just
bug#20528: 25.0.50; `keymap' property to work for symbol-value, not just symbol-function
Fri, 8 May 2015 08:25:58 -0700 (PDT)
> > Please allow it to also be a symbol, such as `Info-mode-map',
> > whose `symbol-value' is a keymap. It is used only as a keymap.
> > It is not used as a function. It is convenient to be able to
> > reuse an existing keymap variable to provide a map for a given
> > portion of text.
> Why can't you dereference the variable when assigning the property?
Why can't you dereference the function symbol when assigning the
property? ;-) As I said, it is used here only as a keymap, not
as a function.
But the real reason is that I want to have `C-u C-x =' show the
variable name, not the raw keymap value (after [Show]). In my
version, clicking that name then provides a human-readable
description of the keymap (from command `describe-keymap').
Anyway, my guess about requiring C code modification was wrong.
I've done what I wanted now, locally. You can do likewise for
Emacs, if you want. Or not.
The descr-text.el code is here:
Command `describe-keymap' is here:
All that's needed is to add a `help-keymap' button, and to use that
in `describe-property-list' for a keymap variable. And to have
`describe-text-sexp' use action `describe-keymap' for a keymap var.
Then, when you click on the keymap var name from `C-u C-x =', you
get a readable description of the keymap for that `keymap' or
`local-map' property. Properties `keymap' and `local-map' are as
important as properties such as `face' for `what-cursor-position'
output, and they too can provide useful info here, if you let them.