How to quickly navigate/jump between functions on emacs?
Solution 1
M-x imenu
lets you jump to functions in the same file. I have bound it to Super-i for easy access.
Solution 2
As already suggested by others I also use Imenu
exclusively to navigate in the buffer. I find it very useful to do that by having ido
interface for Imenu. here is my config for ido-imenu
. (this is slightly modified version from the function you find it emacswiki page)
(defun ido-imenu ()
"Update the imenu index and then use ido to select a symbol to navigate to.
Symbols matching the text at point are put first in the completion list."
(interactive)
(imenu--make-index-alist)
(let ((name-and-pos '())
(symbol-names '()))
(flet ((addsymbols
(symbol-list)
(when (listp symbol-list)
(dolist (symbol symbol-list)
(let ((name nil) (position nil))
(cond
((and (listp symbol) (imenu--subalist-p symbol))
(addsymbols symbol))
((listp symbol)
(setq name (car symbol))
(setq position (cdr symbol)))
((stringp symbol)
(setq name symbol)
(setq position
(get-text-property 1 'org-imenu-marker symbol))))
(unless (or (null position) (null name))
(add-to-list 'symbol-names name)
(add-to-list 'name-and-pos (cons name position))))))))
(addsymbols imenu--index-alist))
;; If there are matching symbols at point, put them at the beginning
;; of `symbol-names'.
(let ((symbol-at-point (thing-at-point 'symbol)))
(when symbol-at-point
(let* ((regexp (concat (regexp-quote symbol-at-point) "$"))
(matching-symbols
(delq nil (mapcar
(lambda (symbol)
(if (string-match regexp symbol) symbol))
symbol-names))))
(when matching-symbols
(sort matching-symbols (lambda (a b) (> (length a) (length b))))
(mapc
(lambda (symbol)
(setq symbol-names (cons symbol (delete symbol symbol-names))))
matching-symbols)))))
(let* ((selected-symbol (ido-completing-read "Symbol? " symbol-names))
(position (cdr (assoc selected-symbol name-and-pos))))
(push-mark)
(if (overlayp position)
(goto-char (overlay-start position))
(goto-char position)))))
(global-set-key (kbd "C-x C-i") 'ido-imenu)
And I can use C-xC-i in many number of languages modes that support imenu
Solution 3
I have been using cscope
integrated into Emacs, and it works really well for searching for functions, variables etc and jumping around between them.
Edit: in .emacs (or .xemacs/init.el) I have:
(require 'xcscope)
(setq cscope-do-not-update-database t)
Then I just manually run cscope on the source files as needed (for the Linux kernel, make cscope
, which also works on many other large projects).
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Jack
Updated on September 18, 2022Comments
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Jack over 1 year
How to quickly navigate/jump between functions on emacs? I'm looking for a way to jump quickly to functions on emacs. I'm using the emacs search to do it,but it's too slow and fail. For example,I need to make sure to type a string that will not match to function prototype or function call. I need to include the type of function and begging of parameters type to it.. and depending to coding syntax style used in the program,it's hard/inviable to do. What exactly I'm looking for: something that I type just the function name and jump to begging of it. My current language is C on linux. But if there's such feature to another programming languages and platforms,please show me too. Will be very appreciated.
Please: don't suggest "use an IDE" I'm fine with emacs.
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Admin almost 11 yearsYou may want to search on integrating cscope with Emacs.
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phils almost 11 yearsCross-referencing with similar/duplicate questions: * stackoverflow.com/questions/4071919/… * stackoverflow.com/questions/12922526/… * stackoverflow.com/questions/13440613/… * stackoverflow.com/questions/1598351/… * stackoverflow.com/questions/3124567/… * stackoverflow.com/questions/8943705/…
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Amumu about 10 yearsUse
helm-semantic-or-iemnu
.
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Vera zhin almost 11 yearsCould you post your
cscope
config? I'm still trying to figure out how to configure it for efficient and streamlined workflow... -
Admin almost 11 yearsYes, edit with config posted...
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Vera zhin almost 11 yearsWait... that's all? Now I feel kinda stupid... :-)
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Admin almost 11 yearsThis is a cool solution!
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cevaris about 9 yearsHmm. Seems imenu only searches the current open buffers. Any info on configuring it to search the whole project?
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rkachach over 8 yearsI'll advice to combine imenu with ido-goto-symbol or the helm mode. This way you have just to type few letters from the name of the function to jump to it in the current buffer.
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rkachach over 8 yearsThis is a very good solution. Another alternative is to enable the helm mode this way you get the same functionality by default without the need of extra lisp code.