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New option show-paren-context-when-offscreen

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* lisp/simple.el (blink-paren-open-paren-line-string): Extract
functionality that shows the open paren line in the echo area into its
own function, to reuse it from paren.el.
(blink-matching-open): Use blink-paren-open-paren-line-string.
* lisp/paren.el (show-paren-context-when-offscreen): New option
show-paren-context-when-offscreen.
(show-paren-function): Implement it using
blink-paren-open-paren-line-string.
* lisp/emacs-lisp/eldoc.el (eldoc-display-message-no-interference-p):
Make sure the feature works well with eldoc.
* test/lisp/paren-tests.el (paren-tests-open-paren-line): Test
blink-paren-open-paren-line-string.
* doc/emacs/programs.texi (Matching): Update the documentation.
* etc/NEWS: And announce the new feature.
This commit is contained in:
Daniel Martín 2021-10-16 20:24:19 +02:00 • committed by Lars Ingebrigtsen
parent 25e624e585
commit 9f505c476e
6 changed files with 114 additions and 35 deletions
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9
lisp/emacs-lisp/eldoc.el
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@ -380,7 +380,14 @@ Also store it in `eldoc-last-message' and return that value."
;; it undesirable to print eldoc messages right this instant.
(defun eldoc-display-message-no-interference-p ()
"Return nil if displaying a message would cause interference."
(not (or executing-kbd-macro (bound-and-true-p edebug-active))))
(not (or executing-kbd-macro
(bound-and-true-p edebug-active)
;; The following configuration shows "Matches..." in the
;; echo area when point is after a closing bracket, which
;; conflicts with eldoc.
(and show-paren-context-when-offscreen
(not (pos-visible-in-window-p
(overlay-end show-paren--overlay)))))))
(defvar eldoc-documentation-functions nil