61 lines
2.4 KiB
EmacsLisp
61 lines
2.4 KiB
EmacsLisp
;;; -*- lexical-binding: t; -*-
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;;; https://with-emacs.com/posts/ui-hacks/show-matching-lines-when-parentheses-go-off-screen/
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;; we will call `blink-matching-open` ourselves...
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(remove-hook 'post-self-insert-hook
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#'blink-paren-post-self-insert-function)
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;; this still needs to be set for `blink-matching-open` to work
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(setq blink-matching-paren 'show)
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(let ((ov nil)) ; keep track of the overlay
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(advice-add
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#'show-paren-function
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:after
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(defun show-paren--off-screen+ (&rest _args)
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"Display matching line for off-screen paren."
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(when (overlayp ov)
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(delete-overlay ov))
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;; check if it's appropriate to show match info,
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;; see `blink-paren-post-self-insert-function'
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(when (and (overlay-buffer show-paren--overlay)
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(not (or cursor-in-echo-area
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executing-kbd-macro
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noninteractive
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(minibufferp)
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this-command))
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(and (not (bobp))
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(memq (char-syntax (char-before)) '(?\) ?\$)))
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(= 1 (logand 1 (- (point)
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(save-excursion
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(forward-char -1)
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(skip-syntax-backward "/\\")
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(point))))))
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;; rebind `minibuffer-message' called by
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;; `blink-matching-open' to handle the overlay display
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(cl-letf (((symbol-function #'minibuffer-message)
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(lambda (msg &rest args)
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(let ((msg (apply #'format-message msg args)))
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(setq ov (display-line-overlay+
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(window-start) msg ))))))
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(blink-matching-open))))))
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(defun display-line-overlay+ (pos str &optional face)
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"Display line at POS as STR with FACE.
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FACE defaults to inheriting from default and highlight."
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(let ((ol (save-excursion
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(goto-char pos)
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(make-overlay (line-beginning-position)
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(line-end-position)))))
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(overlay-put ol 'display str)
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(overlay-put ol 'face
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(or face '(:inherit default :inherit highlight)))
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ol))
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(setq show-paren-style 'paren
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show-paren-delay 0.03
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show-paren-highlight-openparen t
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show-paren-when-point-inside-paren nil
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show-paren-when-point-in-periphery t)
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(show-paren-mode 1)
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