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59 lines
2.3 KiB
EmacsLisp
59 lines
2.3 KiB
EmacsLisp
;;; ** load imenu
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(require 'imenu)
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(define-key global-map [C-down-mouse-2] 'imenu)
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;; via https://superuser.com/questions/601982/how-to-quickly-navigate-jump-between-functions-on-emacs
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(defun ido-imenu ()
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"Update the imenu index and then use ido to select a symbol to navigate to.
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Symbols matching the text at point are put first in the completion list."
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(interactive)
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(imenu--make-index-alist)
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(let ((name-and-pos '())
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(symbol-names '()))
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(flet ((addsymbols
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(symbol-list)
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(when (listp symbol-list)
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(dolist (symbol symbol-list)
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(let ((name nil) (position nil))
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(cond
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((and (listp symbol) (imenu--subalist-p symbol))
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(addsymbols symbol))
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((listp symbol)
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(setq name (car symbol))
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(setq position (cdr symbol)))
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((stringp symbol)
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(setq name symbol)
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(setq position
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(get-text-property 1 'org-imenu-marker symbol))))
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(unless (or (null position) (null name))
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(add-to-list 'symbol-names name)
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(add-to-list 'name-and-pos (cons name position))))))))
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(addsymbols imenu--index-alist))
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;; If there are matching symbols at point, put them at the beginning
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;; of `symbol-names'.
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(let ((symbol-at-point (thing-at-point 'symbol)))
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(when symbol-at-point
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(let* ((regexp (concat (regexp-quote symbol-at-point) "$"))
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(matching-symbols
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(delq nil (mapcar
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(lambda (symbol)
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(if (string-match regexp symbol) symbol))
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symbol-names))))
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(when matching-symbols
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(sort matching-symbols (lambda (a b) (> (length a) (length b))))
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(mapc
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(lambda (symbol)
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(setq symbol-names (cons symbol (delete symbol symbol-names))))
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matching-symbols)))))
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(let* ((selected-symbol (ido-completing-read "Symbol? " symbol-names))
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(position (cdr (assoc selected-symbol name-and-pos))))
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(push-mark)
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(if (overlayp position)
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(goto-char (overlay-start position))
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(goto-char position)))))
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(global-set-key (kbd "C-c C-j") 'ido-imenu)
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