Open a file at line with "filename:line" syntax
Very often, compilations errors are displayed with the file:line
syntax.
It would be nice to copy-paste this directly to open the file at the right line.
Emacs already has some mode to handle this in buffers (compile-mode, iirc), but I would like to have this available from the shell command line, since I use the standard shell most of the time outside of emacs.
Any idea how to tweak emacs to learn file:line
syntax to open file
at line line
? (obviously, if file:line
really exists on disk, it should be opened preferably)
You can do this using emacsclient. e.g. to open FILE at line 4, column 3 in a new frame:
emacsclient +4:3 FILE
Leave off the :3
to simply open the file at line 4.
I have the following in my .emacs
, but I haven't found it as useful as I thought it would be.
;; Open files and goto lines like we see from g++ etc. i.e. file:line#
;; (to-do "make `find-file-line-number' work for emacsclient as well")
;; (to-do "make `find-file-line-number' check if the file exists")
(defadvice find-file (around find-file-line-number
(filename &optional wildcards)
activate)
"Turn files like file.cpp:14 into file.cpp and going to the 14-th line."
(save-match-data
(let* ((matched (string-match "^\\(.*\\):\\([0-9]+\\):?$" filename))
(line-number (and matched
(match-string 2 filename)
(string-to-number (match-string 2 filename))))
(filename (if matched (match-string 1 filename) filename)))
ad-do-it
(when line-number
;; goto-line is for interactive use
(goto-char (point-min))
(forward-line (1- line-number))))))