One problem I had with the development of rcd-template package to
interpolate snippets in the text is that I could not use the function
with lexical-binding true in the package.
But what I could do, is to isolate the function into a separate
package that uses global bindings.
Then if I wish to invoke the `rcd-template' function from other
functions with lexical-binding T, then I had to do 2 things:
- prefix the global variables, in this case I have prefixed it with
`::' separator, like `wrs::page' as that would appear in the
template where snippets like ⟦ (gethash "areas_name" wrs::area) ⟧
would then work. As if I don't prefix it, the chances to collide
with some other variables are there.
- I have to use `dlet' in those packages with lexical-binding T, as to
call `eval' function indirectly, that one from outside package
without lexical-binding T.
Example:
(defun wrs-generate-page (page-id)
(dlet ((wrs::page (rcd-db-table-id-hash "pages" page-id cf-db))
(wrs::area (rcd-db-table-id-hash "areas" (gethash "pages_area"
wrs::page) cf-db))
(wrs::type (or (gethash "pages_pagetype" wrs::page) (gethash
"areas_pagetype" wrs::area)))
IMHO, GNU Hyperbole could switch to lexical-binding T by using that
method:
- isolate the `eval' functions in separate outside package, without
lexical-binding T;
- use `dlet' when necessary to pass some information to indirectly
called `eval'
P.S. This may be presentation of a problem without a problem.
I use: Editor: GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, X
toolkit, cairo version 1.17.4, Xaw3d scroll bars)
Hyperbole: 8.0.0pre
Sys Type: x86_64-pc-linux-gnu
OS Type: gnu/linux
Window Sys: x
News Reader: Gnus v5.13
Quit--
Thanks,
Jean Louis
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